Surveiller les modifications

Repérer les nouvelles inscriptions au registre et être notifié.

Quand quelque chose change au registre pour une entreprise, tu veux généralement le savoir vite. Il y a quatre façons de le faire. Le tableau t’aide à choisir ; en dessous, chaque voie est décrite avec un exemple.

Les voies comparées

Voie
Voie	Idéal pour	Il te faut	Coûts
Interroger toi-même	Des entreprises isolées, n’importe quels champs du profil d’entreprise, ton propre rythme	Un cron job et un stockage pour le dernier état	Le prix du profil d’entreprise par récupération
Signals	Les modifications sur toutes les entreprises par thème et période, ou ciblées sur jusqu’à 5 entreprises	Des requêtes régulières via l’API	20 crédits par page
Monitoring	Des entreprises choisies ; nous vérifions selon un rythme fixe et informons par webhook	Un endpoint HTTPS accessible publiquement	Un prix de cycle par moniteur pour 30 jours
Watchlist	Suivre sans serveur propre, dans le navigateur ou un lecteur de flux	Uniquement l’application web	20 crédits par mise à jour du flux, au plus une fois par heure

Signals, Monitoring et la watchlist utilisent les mêmes thèmes. Immatriculations, modifications des données de base, fermetures & dissolutions, changements de direction et modifications de capital sont disponibles pour chaque compte. Les insolvabilités sont incluses à partir de Pro, Transformations & fusions-acquisitions avec Max.

Interroger toi-même avec fetch-organization

Si seuls certains champs t’intéressent, récupère régulièrement le profil d’entreprise et compare-le avec le dernier état. Demande-le avec l’entity_id et les fonctionnalités à comparer. Dans l’exemple, il s’agit de Hetzner Online GmbH, Ansbach HRB 6089.

curl -G "https://handelsregister.ai/api/v1/fetch-organization" \
  -H "x-api-key: TA_CLE_API" \
  --data-urlencode 'q=94eb910fef13f94585c48c263fa446d4' \
  --data-urlencode 'feature=related_persons'

import requests

response = requests.get(
    "https://handelsregister.ai/api/v1/fetch-organization",
    headers={"x-api-key": "TA_CLE_API"},
    params={
        "q": "94eb910fef13f94585c48c263fa446d4",
        "feature": ["related_persons"],
    },
)
data = response.json()

const url = new URL("https://handelsregister.ai/api/v1/fetch-organization");
url.searchParams.append("q", "94eb910fef13f94585c48c263fa446d4");
url.searchParams.append("feature", "related_persons");

const response = await fetch(url, {
  headers: { "x-api-key": "TA_CLE_API" },
});
const data = await response.json();

1{2  "entity_id": "94eb910fef13f94585c48c263fa446d4",3  "name": "Hetzner Online GmbH",4  "status": "ACTIVE",5  "address": {6    "house_number": "25",7    "street": "Industriestraße",8    "postal_code": "91710",9    "city": "Gunzenhausen",10    "county": "Weißenburg-Gunzenhausen",11    "state": "Bayern",12    "country": "DEU",13    "coordinates": {14      "latitude": 49.12483,15      "longitude": 10.7805216    }17  },18  "capital": {19    "current": {20      "amount": 50000,21      "currency": "EUR",22      "kind": "STAMMKAPITAL"23    },24    "history": [25      {26        "value": {27          "amount": 50000,28          "currency": "EUR",29          "kind": "GRUNDKAPITAL"30        },31        "effective_from": "2002-10-15",32        "effective_to": null33      }34    ]35  },36  "related_persons": {37    "current": [38      {39        "entity_id": "ea3a1670232611a992727ed067216d07",40        "label": "MANAGING_DIRECTOR",41        "role": {42          "en": {43            "long": "Managing Director",44            "short": "MD"45          },46          "de": {47            "long": "Geschäftsführer",48            "short": "GF"49          }50        },51        "name": "Paul Musterwald",52        "start_date": "2019-01-04",53        "end_date": null,54        "birth_date": "1989-07-18",55        "name_parts": {56          "given": "Paul",57          "family": "Musterwald",58          "maiden": null,59          "canonical_name": "Musterwald, Paul",60          "previous_names": null61        },62        "location": {63          "home": {64            "city": "Exempelingen i. Bay."65          }66        },67        "organization_representation_scheme": {68          "current": [69            "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."70          ],71          "history": [72            {73              "value": [74                "Ist nur ein Vorstandsmitglied bestellt, so vertritt es die Gesellschaft allein. Sind mehrere Vorstandsmitglieder bestellt, so wird die Gesellschaft durch zwei Vorstandsmitglieder oder durch ein Vorstandsmitglied gemeinsam mit einem Prokuristen vertreten."75              ],76              "effective_from": "2002-10-15",77              "effective_to": "2015-07-28"78            },79            {80              "value": [81                "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."82              ],83              "effective_from": "2015-07-28",84              "effective_to": null85            }86          ]87        },88        "role_representation_scheme": {89          "current": [90            "einzelvertretungsberechtigt."91          ],92          "history": [93            {94              "value": [95                "einzelvertretungsberechtigt."96              ],97              "effective_from": "2019-01-04",98              "effective_to": null99            }100          ]101        }102      },103      {104        "entity_id": "dd7e94b41f78de4195cc70c6b0f732f3",105        "label": "MANAGING_DIRECTOR",106        "role": {107          "en": {108            "long": "Managing Director",109            "short": "MD"110          },111          "de": {112            "long": "Geschäftsführer",113            "short": "GF"114          }115        },116        "name": "Jan Musterhuber",117        "start_date": "2019-01-04",118        "end_date": null,119        "birth_date": "1955-11-06",120        "name_parts": {121          "given": "Jan",122          "family": "Musterhuber",123          "maiden": null,124          "canonical_name": "Musterhuber, Jan",125          "previous_names": null126        },127        "location": {128          "home": {129            "city": "Probeingen"130          }131        },132        "organization_representation_scheme": {133          "current": [134            "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."135          ],136          "history": [137            {138              "value": [139                "Ist nur ein Vorstandsmitglied bestellt, so vertritt es die Gesellschaft allein. Sind mehrere Vorstandsmitglieder bestellt, so wird die Gesellschaft durch zwei Vorstandsmitglieder oder durch ein Vorstandsmitglied gemeinsam mit einem Prokuristen vertreten."140              ],141              "effective_from": "2002-10-15",142              "effective_to": "2015-07-28"143            },144            {145              "value": [146                "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."147              ],148              "effective_from": "2015-07-28",149              "effective_to": null150            }151          ]152        },153        "role_representation_scheme": {154          "current": [155            "einzelvertretungsberechtigt."156          ],157          "history": [158            {159              "value": [160                "einzelvertretungsberechtigt."161              ],162              "effective_from": "2019-01-04",163              "effective_to": null164            }165          ]166        }167      },168      {169        "entity_id": "08ed5f967956831ca6588930fd2693ed",170        "label": "MANAGING_DIRECTOR",171        "role": {172          "en": {173            "long": "Managing Director",174            "short": "MD"175          },176          "de": {177            "long": "Geschäftsführer",178            "short": "GF"179          }180        },181        "name": "Max Felix Mustermann",182        "start_date": "2015-07-28",183        "end_date": null,184        "birth_date": "1976-01-15",185        "name_parts": {186          "given": "Max Felix",187          "family": "Mustermann",188          "maiden": null,189          "canonical_name": "Mustermann, Max Felix",190          "previous_names": null191        },192        "location": {193          "home": {194            "city": "Musterheim"195          }196        },197        "organization_representation_scheme": {198          "current": [199            "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."200          ],201          "history": [202            {203              "value": [204                "Ist nur ein Vorstandsmitglied bestellt, so vertritt es die Gesellschaft allein. Sind mehrere Vorstandsmitglieder bestellt, so wird die Gesellschaft durch zwei Vorstandsmitglieder oder durch ein Vorstandsmitglied gemeinsam mit einem Prokuristen vertreten."205              ],206              "effective_from": "2002-10-15",207              "effective_to": "2015-07-28"208            },209            {210              "value": [211                "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."212              ],213              "effective_from": "2015-07-28",214              "effective_to": null215            }216          ]217        },218        "role_representation_scheme": {219          "current": [220            "einzelvertretungsberechtigt; mit der Befugnis, im Namen der Gesellschaft mit sich im eigenen Namen oder als Vertreter eines Dritten Rechtsgeschäfte abzuschließen."221          ],222          "history": [223            {224              "value": [225                "einzelvertretungsberechtigt; mit der Befugnis, im Namen der Gesellschaft mit sich im eigenen Namen oder als Vertreter eines Dritten Rechtsgeschäfte abzuschließen."226              ],227              "effective_from": "2015-07-28",228              "effective_to": null229            }230          ]231        }232      }233    ],234    "past": [235      {236        "entity_id": "ea3a1670232611a992727ed067216d07",237        "label": "PROCURA",238        "role": {239          "en": {240            "long": "Procura",241            "short": "Procura"242          },243          "de": {244            "long": "Prokura",245            "short": "Prokura"246          }247        },248        "name": "Paul Musterwald",249        "start_date": "2015-07-28",250        "end_date": "2019-01-04",251        "birth_date": "1989-07-18",252        "name_parts": {253          "given": "Paul",254          "family": "Musterwald",255          "maiden": null,256          "canonical_name": "Musterwald, Paul",257          "previous_names": null258        },259        "location": {260          "home": {261            "city": "Exempelingen i. Bay."262          }263        },264        "organization_representation_scheme": {265          "latest": [266            "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."267          ],268          "history": [269            {270              "value": [271                "Ist nur ein Vorstandsmitglied bestellt, so vertritt es die Gesellschaft allein. Sind mehrere Vorstandsmitglieder bestellt, so wird die Gesellschaft durch zwei Vorstandsmitglieder oder durch ein Vorstandsmitglied gemeinsam mit einem Prokuristen vertreten."272              ],273              "effective_from": "2002-10-15",274              "effective_to": "2015-07-28"275            },276            {277              "value": [278                "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."279              ],280              "effective_from": "2015-07-28",281              "effective_to": null282            }283          ]284        },285        "role_representation_scheme": {286          "latest": [287            "Gesamtprokura gemeinsam mit einem anderen Prokuristen:"288          ],289          "history": [290            {291              "value": [292                "Gesamtprokura gemeinsam mit einem anderen Prokuristen:"293              ],294              "effective_from": "2015-07-28",295              "effective_to": "2019-01-04"296            }297          ]298        }299      },300      {301        "entity_id": "dd7e94b41f78de4195cc70c6b0f732f3",302        "label": "PROCURA",303        "role": {304          "en": {305            "long": "Procura",306            "short": "Procura"307          },308          "de": {309            "long": "Prokura",310            "short": "Prokura"311          }312        },313        "name": "Jan Musterhuber",314        "start_date": "2015-07-28",315        "end_date": "2019-01-04",316        "birth_date": "1955-11-06",317        "name_parts": {318          "given": "Jan",319          "family": "Musterhuber",320          "maiden": null,321          "canonical_name": "Musterhuber, Jan",322          "previous_names": null323        },324        "location": {325          "home": {326            "city": "Probeingen"327          }328        },329        "organization_representation_scheme": {330          "latest": [331            "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."332          ],333          "history": [334            {335              "value": [336                "Ist nur ein Vorstandsmitglied bestellt, so vertritt es die Gesellschaft allein. Sind mehrere Vorstandsmitglieder bestellt, so wird die Gesellschaft durch zwei Vorstandsmitglieder oder durch ein Vorstandsmitglied gemeinsam mit einem Prokuristen vertreten."337              ],338              "effective_from": "2002-10-15",339              "effective_to": "2015-07-28"340            },341            {342              "value": [343                "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."344              ],345              "effective_from": "2015-07-28",346              "effective_to": null347            }348          ]349        },350        "role_representation_scheme": {351          "latest": [352            "Gesamtprokura gemeinsam mit einem anderen Prokuristen:"353          ],354          "history": [355            {356              "value": [357                "Gesamtprokura gemeinsam mit einem anderen Prokuristen:"358              ],359              "effective_from": "2015-07-28",360              "effective_to": "2019-01-04"361            }362          ]363        }364      },365      {366        "entity_id": "08ed5f967956831ca6588930fd2693ed",367        "label": "BOARD",368        "role": {369          "en": {370            "long": "Board Member",371            "short": "Board"372          },373          "de": {374            "long": "Vorstandsmitglied",375            "short": "Vorstand"376          }377        },378        "name": "Max Felix Mustermann",379        "start_date": "2002-10-15",380        "end_date": "2015-07-28",381        "birth_date": "1976-01-15",382        "name_parts": {383          "given": "Max Felix",384          "family": "Mustermann",385          "maiden": null,386          "canonical_name": "Mustermann, Max Felix",387          "previous_names": null388        },389        "location": {390          "home": {391            "city": "Musterheim"392          }393        },394        "organization_representation_scheme": {395          "latest": [396            "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."397          ],398          "history": [399            {400              "value": [401                "Ist nur ein Vorstandsmitglied bestellt, so vertritt es die Gesellschaft allein. Sind mehrere Vorstandsmitglieder bestellt, so wird die Gesellschaft durch zwei Vorstandsmitglieder oder durch ein Vorstandsmitglied gemeinsam mit einem Prokuristen vertreten."402              ],403              "effective_from": "2002-10-15",404              "effective_to": "2015-07-28"405            },406            {407              "value": [408                "Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten."409              ],410              "effective_from": "2015-07-28",411              "effective_to": null412            }413          ]414        },415        "role_representation_scheme": {416          "latest": [417            "einzelvertretungsberechtigt; mit der Befugnis, im Namen der Gesellschaft mit sich im eigenen Namen oder als Vertreter eines Dritten Rechtsgeschäfte abzuschließen"418          ],419          "history": [420            {421              "value": [422                "einzelvertretungsberechtigt; mit der Befugnis, im Namen der Gesellschaft mit sich im eigenen Namen oder als Vertreter eines Dritten Rechtsgeschäfte abzuschließen"423              ],424              "effective_from": "2002-10-15",425              "effective_to": "2015-07-28"426            }427          ]428        }429      }430    ]431  },432  "meta": {433    "request_credit_cost": 7,434    "credits_remaining": 145435  }436}

200 · Exemple de réponse : profil d’entreprise de Hetzner Online GmbH avec direction (extrait)

Le script compare nom, statut, adresse, capital et direction avec la dernière exécution et affiche chaque modification. Exécute-le, par exemple, une fois par semaine en cron job.

Script Python

import json
import pathlib

import requests

API = "https://handelsregister.ai/api/v1/fetch-organization"
HEADERS = {"x-api-key": "TA_CLE_API", "Accept": "application/json"}
ENTREPRISES = ["94eb910fef13f94585c48c263fa446d4"]  # les entity_ids de tes entreprises
ETAT = pathlib.Path("etat.json")


def snapshot(entity_id):
    response = requests.get(
        API,
        params={"q": entity_id, "feature": "related_persons"},
        headers=HEADERS,
        timeout=120,
    )
    response.raise_for_status()
    data = response.json()
    persons = (data.get("related_persons") or {}).get("current") or []
    return {
        "name": data.get("name"),
        "status": data.get("status"),
        "address": data.get("address"),
        "capital": (data.get("capital") or {}).get("current"),
        "persons": sorted(f'{p["name"]} ({p["label"]})' for p in persons),
    }


old = json.loads(ETAT.read_text()) if ETAT.exists() else {}
new = {entity_id: snapshot(entity_id) for entity_id in ENTREPRISES}
for entity_id, now in new.items():
    before = old.get(entity_id)
    if before is None:
        continue
    for field, value in now.items():
        if before.get(field) != value:
            print(f"{now['name']}: {field} modifié: {before.get(field)} -> {value}")
ETAT.write_text(json.dumps(new, ensure_ascii=False, indent=2))

Chaque exécution coûte jusqu’à 7 crédits par entreprise : les données de base et la direction, cette dernière seulement si l’API trouve des personnes. Pour de nombreuses entreprises ou des intervalles courts, Signals ou Monitoring sont moins chers.

Rechercher des modifications avec Signals

Les Signals sont des modifications issues du Handelsregister (registre du commerce) et des publications d’insolvabilité, préparées sous forme d’événements uniformes. Tu filtres sur toutes les entreprises par thème (topics) et période (from, to).

curl -G "https://handelsregister.ai/api/v1/signals" \
  -H "x-api-key: TA_CLE_API" \
  --data-urlencode 'topics=CAPITAL_CHANGES' \
  --data-urlencode 'from=2026-10-26' \
  --data-urlencode 'to=2026-10-30'

import requests

response = requests.get(
    "https://handelsregister.ai/api/v1/signals",
    headers={"x-api-key": "TA_CLE_API"},
    params={
        "topics": "CAPITAL_CHANGES",
        "from": "2026-10-26",
        "to": "2026-10-30",
    },
)
data = response.json()

const url = new URL("https://handelsregister.ai/api/v1/signals");
url.searchParams.append("topics", "CAPITAL_CHANGES");
url.searchParams.append("from", "2026-10-26");
url.searchParams.append("to", "2026-10-30");

const response = await fetch(url, {
  headers: { "x-api-key": "TA_CLE_API" },
});
const data = await response.json();

1{2  "signals": [3    {4      "event": {5        "id": "3abb946f2d6030f1619ed833b226faed",6        "topic": "CAPITAL_CHANGES",7        "topic_name": {8          "de": "Kapitaländerungen",9          "en": "Capital changes"10        },11        "occurred_on": "2026-10-30",12        "announced_on": "2026-10-30",13        "date_basis": "REGISTER_ENTRY"14      },15      "organization": {16        "type": "ORGANIZATION",17        "entity_id": "c6b0c0721497f190aa5dfca1d4573c98",18        "current_profile": {19          "name": "Hans Hörner GmbH",20          "registration": {21            "register_type": "HRB",22            "register_number": "113000",23            "court": "München",24            "register_locality": "Munich",25            "registration_authority_id": "D2601",26            "register_entity_name": "München HRB 113000"27          },28          "legal_form": {29            "name": {30              "de": "Gesellschaft mit beschränkter Haftung"31            },32            "short": {33              "de": "GmbH"34            }35          },36          "seat": {37            "city": "Grafing"38          },39          "status": {40            "code": "ACTIVE"41          }42        }43      },44      "register_entry": {45        "entry_number": "4",46        "entry_date": "2026-10-30",47        "phase": "DECREASED",48        "description_text": "Herabsetzung des Stammkapitals um 25.000,00 EUR auf 25.000,00 EUR",49        "context": "PRIMARY",50        "flags": []51      },52      "source": {53        "kind": "COMMERCIAL_REGISTER"54      },55      "details": {56        "schema": "CAPITAL_CHANGE",57        "capital_kind": "SHARE_CAPITAL",58        "resulting_amount": {59          "amount": "25000.00",60          "currency": "EUR",61          "source_text": "25.000,00 EUR"62        },63        "change_amount": {64          "amount": "25000.00",65          "currency": "EUR",66          "source_text": "25.000,00 EUR"67        }68      }69    },70    {71      "event": {72        "id": "ba5eab558e65d2a4c3059b35e2d155a5",73        "topic": "CAPITAL_CHANGES",74        "topic_name": {75          "de": "Kapitaländerungen",76          "en": "Capital changes"77        },78        "occurred_on": "2026-10-30",79        "announced_on": "2026-10-30",80        "date_basis": "REGISTER_ENTRY"81      },82      "organization": {83        "type": "ORGANIZATION",84        "entity_id": "9bdf1b5c1ae812a39971e45be7d23bb5",85        "current_profile": {86          "name": "Communardo Technologies Group GmbH",87          "registration": {88            "register_type": "HRB",89            "register_number": "46202",90            "court": "Dresden",91            "register_locality": "Dresden",92            "registration_authority_id": "U1104",93            "register_entity_name": "Dresden HRB 46202"94          },95          "legal_form": {96            "name": {97              "de": "Gesellschaft mit beschränkter Haftung"98            },99            "short": {100              "de": "GmbH"101            }102          },103          "seat": {104            "city": "Dresden"105          },106          "status": {107            "code": "ACTIVE"108          }109        }110      },111      "register_entry": {112        "entry_number": "7",113        "entry_date": "2026-10-30",114        "phase": "INCREASED",115        "description_text": "Erhöhung des Stammkapitals um 761,00 EUR auf 32.326,00 EUR",116        "context": "PRIMARY",117        "flags": []118      },119      "source": {120        "kind": "COMMERCIAL_REGISTER"121      },122      "details": {123        "schema": "CAPITAL_CHANGE",124        "capital_kind": "SHARE_CAPITAL",125        "resulting_amount": {126          "amount": "32326.00",127          "currency": "EUR",128          "source_text": "32.326,00 EUR"129        },130        "change_amount": {131          "amount": "761.00",132          "currency": "EUR",133          "source_text": "761,00 EUR"134        }135      }136    },137    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"description_text": "Erhöhung des Stammkapitals um 9.550,00 EUR auf 62.259,00 EUR.",843        "context": "PRIMARY",844        "flags": []845      },846      "source": {847        "kind": "COMMERCIAL_REGISTER"848      },849      "details": {850        "schema": "CAPITAL_CHANGE",851        "capital_kind": "SHARE_CAPITAL",852        "resulting_amount": {853          "amount": "62259.00",854          "currency": "EUR",855          "source_text": "62.259,00 EUR"856        },857        "change_amount": {858          "amount": "9550.00",859          "currency": "EUR",860          "source_text": "9.550,00 EUR"861        }862      }863    },864    {865      "event": {866        "id": "bbdc65b67d242c528ad1bf59ab16e0bc",867        "topic": "CAPITAL_CHANGES",868        "topic_name": {869          "de": "Kapitaländerungen",870          "en": "Capital changes"871        },872        "occurred_on": "2026-10-28",873        "announced_on": "2026-10-28",874        "date_basis": "REGISTER_ENTRY"875      },876      "organization": {877        "type": "ORGANIZATION",878        "entity_id": "4e4a5bca9dcbdeb128e6649b3642388b",879        "current_profile": {880          "name": "Buzzi HoldCo GmbH",881          "registration": {882            "register_type": "HRB",883            "register_number": "173433",884            "court": "Hamburg",885            "register_locality": "Hamburg",886            "registration_authority_id": "K1101",887            "register_entity_name": "Hamburg HRB 173433"888          },889          "legal_form": {890            "name": {891              "de": "Gesellschaft mit beschränkter Haftung"892            },893            "short": {894              "de": "GmbH"895            }896          },897          "seat": {898            "city": "Hamburg"899          },900          "status": {901            "code": "ACTIVE"902          }903        }904      },905      "register_entry": {906        "entry_number": "2",907        "entry_date": "2026-10-28",908        "phase": "INCREASED",909        "description_text": "Erhöhung des Stammkapitals um 1,00 EUR auf 25.001,00 EUR",910        "context": "PRIMARY",911        "flags": []912      },913      "source": {914        "kind": "COMMERCIAL_REGISTER"915      },916      "details": {917        "schema": "CAPITAL_CHANGE",918        "capital_kind": "SHARE_CAPITAL",919        "resulting_amount": {920          "amount": "25001.00",921          "currency": "EUR",922          "source_text": "25.001,00 EUR"923        },924        "change_amount": {925          "amount": "1.00",926          "currency": "EUR",927          "source_text": "1,00 EUR"928        }929      }930    },931    {932      "event": {933        "id": "3595fab3bb5f62b05e1a5ab0efc9131f",934        "topic": "CAPITAL_CHANGES",935        "topic_name": {936          "de": "Kapitaländerungen",937          "en": "Capital changes"938        },939        "occurred_on": "2026-10-28",940        "announced_on": "2026-10-28",941        "date_basis": "REGISTER_ENTRY"942      },943      "organization": {944        "type": "ORGANIZATION",945        "entity_id": "e5371b14ba0875ee3885ad6f4517907c",946        "current_profile": {947          "name": "Kronos MidCo GmbH",948          "registration": {949            "register_type": "HRB",950            "register_number": "199097",951            "court": "Hamburg",952            "register_locality": "Hamburg",953            "registration_authority_id": "K1101",954            "register_entity_name": "Hamburg HRB 199097"955          },956          "legal_form": {957            "short": {958              "de": "GmbH"959            }960          },961          "seat": {962            "city": "Hamburg"963          },964          "status": {965            "code": "ACTIVE"966          }967        }968      },969      "register_entry": {970        "entry_number": "6",971        "entry_date": "2026-10-28",972        "phase": "INCREASED",973        "description_text": "Erhöhung des Stammkapitals um 7.751,00 EUR auf 32.751,00 EUR.",974        "context": "PRIMARY",975        "flags": []976      },977      "source": {978        "kind": "COMMERCIAL_REGISTER"979      },980      "details": {981        "schema": "CAPITAL_CHANGE",982        "capital_kind": "SHARE_CAPITAL",983        "resulting_amount": {984          "amount": "32751.00",985          "currency": "EUR",986          "source_text": "32.751,00 EUR"987        },988        "change_amount": {989          "amount": "7751.00",990          "currency": "EUR",991          "source_text": "7.751,00 EUR"992        }993      }994    },995    {996      "event": {997        "id": "110abb752ed50097b1b426539f1dd056",998        "topic": "CAPITAL_CHANGES",999        "topic_name": {1000          "de": "Kapitaländerungen",1001          "en": "Capital changes"1002        },1003        "occurred_on": "2026-10-28",1004        "announced_on": "2026-10-28",1005        "date_basis": "REGISTER_ENTRY"1006      },1007      "organization": {1008        "type": "ORGANIZATION",1009        "entity_id": "f97e7a325b4f85b8f37dc7024351c93c",1010        "current_profile": {1011          "name": "CPOT GmbH",1012          "registration": {1013            "register_type": "HRB",1014            "register_number": "128833",1015            "court": "Frankfurt am Main",1016            "register_locality": "Frankfurt",1017            "registration_authority_id": "M1201",1018            "register_entity_name": "Frankfurt am Main HRB 128833"1019          },1020          "legal_form": {1021            "name": {1022              "de": "Gesellschaft mit beschränkter Haftung"1023            },1024            "short": {1025              "de": "GmbH"1026            }1027          },1028          "seat": {1029            "city": "Frankfurt am Main"1030          },1031          "status": {1032            "code": "ACTIVE"1033          }1034        }1035      },1036      "register_entry": {1037        "entry_number": "3",1038        "entry_date": "2026-10-28",1039        "phase": "INCREASED",1040        "description_text": "Erhöhung des Stammkapitals um 24.000,00 EUR auf 25.000,00 EUR",1041        "context": "PRIMARY",1042        "flags": []1043      },1044      "source": {1045        "kind": "COMMERCIAL_REGISTER"1046      },1047      "details": {1048        "schema": "CAPITAL_CHANGE",1049        "capital_kind": "SHARE_CAPITAL",1050        "resulting_amount": {1051          "amount": "25000.00",1052          "currency": "EUR",1053          "source_text": "25.000,00 EUR"1054        },1055        "change_amount": {1056          "amount": "24000.00",1057          "currency": "EUR",1058          "source_text": "24.000,00 EUR"1059        }1060      }1061    },1062    {1063      "event": {1064        "id": "4563a35c76e510cdd2a68f98d935fcbb",1065        "topic": "CAPITAL_CHANGES",1066        "topic_name": {1067          "de": "Kapitaländerungen",1068          "en": "Capital changes"1069        },1070        "occurred_on": "2026-10-28",1071        "announced_on": "2026-10-28",1072        "date_basis": "REGISTER_ENTRY"1073      },1074      "organization": {1075        "type": "ORGANIZATION",1076        "entity_id": "3199feaf239ac1b9a5e45f6ea45a3c61",1077        "current_profile": {1078          "name": "Brave2change UG (haftungsbeschränkt)",1079          "registration": {1080            "register_type": "HRB",1081            "register_number": "270781",1082            "court": "München",1083            "register_locality": "Munich",1084            "registration_authority_id": "D2601",1085            "register_entity_name": "München HRB 270781"1086          },1087          "legal_form": {1088            "name": {1089              "de": "Unternehmergesellschaft (haftungsbeschränkt)"1090            },1091            "short": {1092              "de": "UG (haftungsbeschränkt)"1093            }1094          },1095          "seat": {1096            "city": "München"1097          },1098          "status": {1099            "code": "ACTIVE"1100          }1101        }1102      },1103      "register_entry": {1104        "entry_number": "2",1105        "entry_date": "2026-10-28",1106        "phase": "INCREASED",1107        "description_text": "Erhöhung des Stammkapitals um 1.400,- EUR auf 2.400,00 EUR",1108        "context": "PRIMARY",1109        "flags": []1110      },1111      "source": {1112        "kind": "COMMERCIAL_REGISTER"1113      },1114      "details": {1115        "schema": "CAPITAL_CHANGE",1116        "capital_kind": "SHARE_CAPITAL",1117        "resulting_amount": {1118          "amount": "2400.00",1119          "currency": "EUR",1120          "source_text": "2.400,00 EUR"1121        },1122        "change_amount": {1123          "amount": "1400.00",1124          "currency": "EUR",1125          "source_text": "1.400,- EUR"1126        }1127      }1128    },1129    {1130      "event": {1131        "id": "f810560be252c43dc031564fdb8fe653",1132        "topic": "CAPITAL_CHANGES",1133        "topic_name": {1134          "de": "Kapitaländerungen",1135          "en": "Capital changes"1136        },1137        "occurred_on": "2026-10-28",1138        "announced_on": "2026-10-28",1139        "date_basis": "REGISTER_ENTRY"1140      },1141      "organization": {1142        "type": "ORGANIZATION",1143        "entity_id": "d45fcce5200b18bf2f377c6f1a785897",1144        "current_profile": {1145          "name": "Benfele Ritter Ventures UG (haftungsbeschränkt)",1146          "registration": {1147            "register_type": "HRB",1148            "register_number": "307694",1149            "court": "München",1150            "register_locality": "Munich",1151            "registration_authority_id": "D2601",1152            "register_entity_name": "München HRB 307694"1153          },1154          "legal_form": {1155            "name": {1156              "de": "Unternehmergesellschaft (haftungsbeschränkt)"1157            },1158            "short": {1159              "de": "UG (haftungsbeschränkt)"1160            }1161          },1162          "seat": {1163            "city": "Unterföhring"1164          },1165          "status": {1166            "code": "ACTIVE"1167          }1168        }1169      },1170      "register_entry": {1171        "entry_number": "2",1172        "entry_date": "2026-10-28",1173        "phase": "INCREASED",1174        "description_text": "Erhöhung des Stammkapitals um 100,00 EUR auf 1.100,00 EUR",1175        "context": "PRIMARY",1176        "flags": []1177      },1178      "source": {1179        "kind": "COMMERCIAL_REGISTER"1180      },1181      "details": {1182        "schema": "CAPITAL_CHANGE",1183        "capital_kind": "SHARE_CAPITAL",1184        "resulting_amount": {1185          "amount": "1100.00",1186          "currency": "EUR",1187          "source_text": "1.100,00 EUR"1188        },1189        "change_amount": {1190          "amount": "100.00",1191          "currency": "EUR",1192          "source_text": "100,00 EUR"1193        }1194      }1195    },1196    {1197      "event": {1198        "id": "6d08eadf8c4fc9495d33af7c12d28f75",1199        "topic": "CAPITAL_CHANGES",1200        "topic_name": {1201          "de": "Kapitaländerungen",1202          "en": "Capital changes"1203        },1204        "occurred_on": "2026-10-27",1205        "announced_on": "2026-10-27",1206        "date_basis": "REGISTER_ENTRY"1207      },1208      "organization": {1209        "type": "ORGANIZATION",1210        "entity_id": "35dd2dbced656dd36cd55871f0b33a5e",1211        "current_profile": {1212          "name": "TÜNKERS-NICKEL Systeme GmbH",1213          "registration": {1214            "register_type": "HRB",1215            "register_number": "13742",1216            "court": "Siegburg",1217            "register_locality": "Siegburg",1218            "registration_authority_id": "R3208",1219            "register_entity_name": "Siegburg HRB 13742"1220          },1221          "legal_form": {1222            "name": {1223              "de": "Gesellschaft mit beschränkter Haftung"1224            },1225            "short": {1226              "de": "GmbH"1227            }1228          },1229          "seat": {1230            "city": "Troisdorf-Spich"1231          },1232          "status": {1233            "code": "ACTIVE"1234          }1235        }1236      },1237      "register_entry": {1238        "entry_number": "5",1239        "entry_date": "2026-10-27",1240        "phase": "INCREASED",1241        "description_text": "Erhöhung des Stammkapitals von 100.000,00 EUR um 112.500,00 EUR auf 212.500,00 EUR",1242        "context": "PRIMARY",1243        "flags": []1244      },1245      "source": {1246        "kind": "COMMERCIAL_REGISTER"1247      },1248      "details": {1249        "schema": "CAPITAL_CHANGE",1250        "capital_kind": "SHARE_CAPITAL",1251        "resulting_amount": {1252          "amount": "212500.00",1253          "currency": "EUR",1254          "source_text": "212.500,00 EUR"1255        },1256        "change_amount": {1257          "amount": "112500.00",1258          "currency": "EUR",1259          "source_text": "112.500,00 EUR"1260        }1261      }1262    },1263    {1264      "event": {1265        "id": "4851a8e6a7864e9efa3b7885b541897b",1266        "topic": "CAPITAL_CHANGES",1267        "topic_name": {1268          "de": "Kapitaländerungen",1269          "en": "Capital changes"1270        },1271        "occurred_on": "2026-10-27",1272        "announced_on": "2026-10-27",1273        "date_basis": "REGISTER_ENTRY"1274      },1275      "organization": {1276        "type": "ORGANIZATION",1277        "entity_id": "559c21619a8dfe0fbe549aec884afdad",1278        "current_profile": {1279          "name": "Wildkost und Feinfleisch JFG GmbH",1280          "registration": {1281            "register_type": "HRB",1282            "register_number": "262241",1283            "court": "Charlottenburg (Berlin)",1284            "register_locality": "Berlin",1285            "registration_authority_id": "F1103",1286            "register_entity_name": "Charlottenburg (Berlin) HRB 262241"1287          },1288          "legal_form": {1289            "name": {1290              "de": "Gesellschaft mit beschränkter Haftung"1291            },1292            "short": {1293              "de": "GmbH"1294            }1295          },1296          "seat": {1297            "city": "Berlin"1298          },1299          "status": {1300            "code": "ACTIVE"1301          }1302        }1303      },1304      "register_entry": {1305        "entry_number": "2",1306        "entry_date": "2026-10-27",1307        "phase": "INCREASED",1308        "description_text": "Stammkapital um 24.500,00 EUR auf 25.000,00 EUR erhöht.",1309        "context": "PRIMARY",1310        "flags": []1311      },1312      "source": {1313        "kind": "COMMERCIAL_REGISTER"1314      },1315      "details": {1316        "schema": "CAPITAL_CHANGE",1317        "capital_kind": "SHARE_CAPITAL",1318        "resulting_amount": {1319          "amount": "25000.00",1320          "currency": "EUR",1321          "source_text": "25.000,00 EUR"1322        },1323        "change_amount": {1324          "amount": "24500.00",1325          "currency": "EUR",1326          "source_text": "24.500,00 EUR"1327        }1328      }1329    }1330  ],1331  "pagination": {1332    "mode": "CURSOR",1333    "limit": 20,1334    "returned": 20,1335    "has_more": true,1336    "next_cursor": "sgc1.eyJiIjoiYjdlYTk2ODM1YjQxIiwiZyI6eyJnOGM2YzZkMDYiOnsiYyI6ImV5Sm1Jam9pTlROaU5EQmxPRFppT0RnelpqSXdZeUlzSW1sa0lqb2lObUZsTlRReU1UQXdPR001TVdKbU1XVXlNREF5TXpVMklpd2lhV1IwSWpvaWIySnFaV04wYVdRaUxDSnlJam9pTWpBeU5pMHdOeTB5T1M0eUlpd2ljeUk2SWpFdU1TSXNJbk5qSWpvaU5HWmxabVk0TVRSaU5tWTBNekF4WVNJc0luTmtJam9pTWpBeU5pMHhNQzB5TjFRd01Eb3dNRG93TUNJc0luTnZJam9pWVc1dWIzVnVZMlZ0Wlc1MFgyUmhkR1VpTENKMElqb3hOemt6TlRJeE9URXpmUS52WHRYZTljSjQ1THp4U25VRnR3cEtBIiwibiI6MCwibCI6bnVsbCwieCI6ZmFsc2V9fX0"1337  },1338  "filters": {1339    "topics": [1340      "CAPITAL_CHANGES"1341    ],1342    "organization_ids": [],1343    "from": "2026-10-26",1344    "to": "2026-10-30"1345  },1346  "warnings": [],1347  "meta": {1348    "generated_at": "2026-11-01T08:31:53+00:00",1349    "profiles_resolved_at": "2026-11-01T08:31:53+00:00",1350    "schema_version": "1.0",1351    "request_id": "req_01m6b3s49jw8hfrc1atz8rk0f2",1352    "request_credit_cost": 20,1353    "credits_remaining": 1451354  }1355}

200 · Exemple de réponse : modifications de capital publiées du 26 au 30 octobre 2026 (extrait)

Une page contient jusqu’à 20 Signals, les plus récents en premier, et coûte 20 crédits. S’il y en a davantage, pagination.next_cursor contient un pointeur vers la page suivante. Renvoie-le comme cursor avec les mêmes filtres.

from et to se rapportent à la date de publication (announced_on). L’événement lui-même (occurred_on) peut être antérieur, par exemple la décision sur une fusion.

Pour des entreprises précises, passe jusqu’à 5 entity_ids dans organization_ids. Pour une synchronisation quotidienne, demande les derniers jours et continue à paginer jusqu’à ce que has_more vaille false.

Un signal peut apparaître un peu après sa publication et figurer sur plusieurs pages. Demande donc des périodes qui se chevauchent et supprime les doublons par event.id.

Surveiller des entreprises avec Monitoring

Un moniteur vérifie une entreprise tous les 1 à 30 jours à la recherche de nouveaux Signals. Nous envoyons chaque nouveau signal sous forme de webhook signé à ton endpoint webhook. Voici comment le configurer :

Crée un endpoint webhook : dans l’application web sous Monitoring, ou via l’API avec POST /v1/account/webhook-endpoints et les champs name et url (HTTPS uniquement). Cette requête nécessite le token admin de Compte › Clés API dans le header Authorization: Bearer …. La clé API ne suffit pas pour cela. La réponse contient l’id de l’endpoint (wep_…) et le secret de signature, que nous n’affichons qu’une fois.
Vérifie l’endpoint avec POST /v1/account/webhook-endpoints/{id}/verify. Nous envoyons alors un message de type endpoint.verification. Ton endpoint répond dans les 15 secondes avec 2xx et renvoie data.challenge dans le header webhook-verification. Ce n’est qu’ensuite qu’il reçoit des livraisons.
Crée le moniteur, avec entity_id, poll_interval_days et l’id de l’étape 1 dans endpoint_ids.

cURL

curl -X POST "https://handelsregister.ai/api/v1/account/monitors" \
  -H "x-api-key: TA_CLE_API" \
  -H "Idempotency-Key: monitor-hetzner-1" \
  -H "Content-Type: application/json" \
  -d '{
    "entity_id": "94eb910fef13f94585c48c263fa446d4",
    "label": "Hetzner Online GmbH",
    "poll_interval_days": 7,
    "endpoint_ids": ["wep_TON_ENDPOINT_ID"]
  }'

Les requêtes d’écriture sur les moniteurs nécessitent une Idempotency-Key. Si tu en répètes une avec la même clé, aucun second moniteur n’est créé.

Créer un moniteur est gratuit. Le moniteur marque d’abord les Signals des derniers jours comme connus, sans les envoyer. Puis il facture le prix du premier cycle de 30 jours et effectue immédiatement sa première vérification.

Coûts et limites
Quoi	Crédits
Moniteur vérifié chaque jour, pendant 30 jours	50
Moniteur vérifié tous les 3 jours, pendant 30 jours	40
Moniteur vérifié tous les 7 jours, pendant 30 jours	20
Moniteur vérifié tous les 30 jours, pendant 30 jours	10
Chaque vérification réussie supplémentaire dans la période	+2

Limite : 30 requêtes par minute. Créer, modifier et supprimer : 10 par minute.

Tu peux demander à l’avance, gratuitement, ce que coûte un rythme :

curl -G "https://handelsregister.ai/api/v1/account/monitoring/pricing" \
  -H "x-api-key: TA_CLE_API" \
  --data-urlencode 'poll_interval_days=7'

import requests

response = requests.get(
    "https://handelsregister.ai/api/v1/account/monitoring/pricing",
    headers={"x-api-key": "TA_CLE_API"},
    params={
        "poll_interval_days": "7",
    },
)
data = response.json()

const url = new URL("https://handelsregister.ai/api/v1/account/monitoring/pricing");
url.searchParams.append("poll_interval_days", "7");

const response = await fetch(url, {
  headers: { "x-api-key": "TA_CLE_API" },
});
const data = await response.json();

1{2  "pricing": {3    "policy_version": "2026-08.v2",4    "credits_per_run": 2,5    "cycle_minimum_credits": 20,6    "included_runs": 5,7    "cycle_days": 30,8    "estimated_runs": 5,9    "estimated_credits": 2010  },11  "entitled": true,12  "meta": {13    "request_credit_cost": 0,14    "credits_remaining": 14515  }16}

200 · Exemple de réponse : prix pour une vérification tous les sept jours

Mise en pause, reprise, changement de rythme et suppression sont décrits sous account/monitors.

Recevoir et vérifier des webhooks

Chaque livraison est un POST avec du JSON. Lors de la vérification, nous envoyons un message avec le type endpoint.verification. Réponds avec 2xx et définis le header webhook-verification à la valeur de data.challenge. Pour un nouveau signal, type vaut organization.signal.detected, et data.signal a le même format qu’une entrée de signals.

Chaque livraison contient trois headers :

Champ
Champ	Signification
webhook-id	Identifiant du message, identique lors des nouvelles tentatives. Utilise-le pour repérer les doublons.
webhook-timestamp	Heure de cette tentative de livraison en secondes Unix.
webhook-signature	Une ou plusieurs signatures de la forme `v1,…`, séparées par des espaces.

La signature suit le standard ouvert « Standard Webhooks » : HMAC-SHA256 sur webhook-id.webhook-timestamp.body. La clé est la partie du secret après whsec_, décodée en Base64. Vérifie la signature sur le corps inchangé avant de le traiter.

import base64
import hashlib
import hmac
import time


def verify_webhook(secret: str, headers: dict, body: bytes) -> bool:
    """Vérifie la signature d’une livraison de handelsregister.ai."""
    msg_id = headers["webhook-id"]
    timestamp = headers["webhook-timestamp"]
    if abs(time.time() - int(timestamp)) > 5 * 60:
        return False  # plus ancien ou plus récent que cinq minutes
    key = base64.b64decode(secret.removeprefix("whsec_"))
    signed = f"{msg_id}.{timestamp}.".encode() + body
    expected = base64.b64encode(hmac.new(key, signed, hashlib.sha256).digest()).decode()
    for candidate in headers["webhook-signature"].split(" "):
        version, _, signature = candidate.partition(",")
        if version == "v1" and hmac.compare_digest(signature, expected):
            return True
    return False

import crypto from "node:crypto";

// body : le corps de requête inchangé, en texte
export function verifyWebhook(secret, headers, body) {
  const id = headers["webhook-id"];
  const timestamp = headers["webhook-timestamp"];
  if (Math.abs(Date.now() / 1000 - Number(timestamp)) > 5 * 60) {
    return false; // plus ancien ou plus récent que cinq minutes
  }
  const key = Buffer.from(secret.replace(/^whsec_/, ""), "base64");
  const expected = crypto
    .createHmac("sha256", key)
    .update(`${id}.${timestamp}.${body}`)
    .digest("base64");
  return headers["webhook-signature"].split(" ").some((candidate) => {
    const [version, signature] = candidate.split(",");
    return (
      version === "v1" &&
      signature.length === expected.length &&
      crypto.timingSafeEqual(Buffer.from(signature), Buffer.from(expected))
    );
  });
}

Réponds dans les 15 secondes avec 2xx et traite ensuite. Sans 2xx, nous retentons la livraison à intervalles croissants pendant environ trois jours. Après une rotation du secret, les messages portent les deux signatures pendant sept jours.

Livraisons, nouvelles tentatives et tous les champs sont décrits sous account/webhook-endpoints.

Watchlist et flux

La watchlist est la voie sans serveur propre. Dans l’application web sous Monitoring, tu suis une entreprise en un clic. Sans moniteur, tu peux suivre jusqu’à 15 entreprises. Les entreprises avec un moniteur figurent automatiquement sur la watchlist.

La watchlist montre les Signals de tes entreprises des douze derniers mois, les plus récents en premier. Avec « Générer l’URL du flux », tu les obtiens sous forme de flux RSS ou Atom pour n’importe quel lecteur de flux.

Le flux se met à jour au plus une fois par heure, quelle que soit la fréquence à laquelle ton lecteur le récupère. Chaque mise à jour coûte 20 crédits. Si ton solde ne suffit pas, le flux affiche le dernier état et se remet à jour dès que tu as des crédits.

L’URL contient une clé secrète et n’est affichée qu’une fois. Si tu la renouvelles, l’ancienne cesse immédiatement de fonctionner. Avec ?lang=en, le flux arrive en anglais.

Tu obtiens les mêmes données via l’API à partir de Signals avec organization_ids.

Ensuite

signals Tous les paramètres, thèmes et champs de Signals. account/monitors Créer, modifier, mettre en pause et supprimer des moniteurs. account/webhook-endpoints Endpoints webhook, payload et livraisons. Publications et événements Ce que couvre chaque thème Signals.