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ドキュメント 変更を監視する

変更を監視する

登記簿の新しい登記を見つけ、通知を受け取る。

登記簿で企業に何か変更があったら、たいていはすぐに知りたいものです。その方法は4つあります。表で選び方を示し、その下で各方法を例とともに説明します。

方法の比較

方法
方法 向いている用途 必要なもの コスト
自分でポーリング 個々の企業、企業プロフィールの任意のフィールド、独自のスケジュール cronジョブと前回の状態の保存先 取得ごとに企業プロフィールの料金
Signals すべての企業を対象にトピックと期間で、または最大 5 社を対象に絞った変更 APIへの定期的なリクエスト 1ページあたり 20 クレジット
モニタリング 選んだ企業。私たちが固定のスケジュールでチェックし、Webhookで通知 公開されたHTTPSエンドポイント モニター1つにつき 30 日間のサイクル料金
ウォッチリスト 自前のサーバーなしで、ブラウザやフィードリーダーで追う Webアプリだけ フィード更新1回につき 20 クレジット、最大1時間に1回

Signals、モニタリング、ウォッチリストは同じトピックを使います。新規登記、基本データの変更、閉鎖と解散、経営陣の交代、資本金の変更はすべてのアカウントで利用できます。倒産はPro、組織再編とM&AはMaxに含まれます。

fetch-organizationで自分でポーリングする

特定のフィールドだけが重要なら、企業プロフィールを定期的に取得し、前回の状態と比較します。entity_idと、比較したい機能を指定してリクエストします。例ではHetzner Online GmbH（Ansbach HRB 6089）です。 

curl -G "https://handelsregister.ai/api/v1/fetch-organization" \
  -H "x-api-key: YOUR_API_KEY" \
  --data-urlencode 'q=94eb910fef13f94585c48c263fa446d4' \
  --data-urlencode 'feature=related_persons'
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 · レスポンス例：経営陣付きのHetzner Online GmbHの企業プロフィール（抜粋）

スクリプトは、名称、ステータス、住所、資本金、経営陣を前回の実行と比較し、すべての変更を出力します。例えば週に1回、cronジョブとして実行してください。

Pythonスクリプト 
import json
import pathlib

import requests

API = "https://handelsregister.ai/api/v1/fetch-organization"
HEADERS = {"x-api-key": "YOUR_API_KEY", "Accept": "application/json"}
COMPANIES = ["94eb910fef13f94585c48c263fa446d4"]  # 対象企業の entity_id
STATE = pathlib.Path("state.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(STATE.read_text()) if STATE.exists() else {}
new = {entity_id: snapshot(entity_id) for entity_id in COMPANIES}
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} 変更あり: {before.get(field)} -> {value}")
STATE.write_text(json.dumps(new, ensure_ascii=False, indent=2))

各実行は企業1社あたり最大 7 クレジット かかります。基本データと経営陣の料金で、経営陣はAPIが人物を見つけた場合のみです。多数の企業や短い間隔の場合は、Signalsやモニタリングのほうが安くなります。

Signalsで変更を検索する

Signalsは、商業登記簿（Handelsregister）と倒産公告からの変更を、統一されたイベントとして整えたものです。すべての企業を対象に、トピック（topics）と期間（from、to）で絞り込みます。 

curl -G "https://handelsregister.ai/api/v1/signals" \
  -H "x-api-key: YOUR_API_KEY" \
  --data-urlencode 'topics=CAPITAL_CHANGES' \
  --data-urlencode 'from=2026-10-26' \
  --data-urlencode 'to=2026-10-30'
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    {138      "event": {139        "id": "666de98109b29e5270113942cee06f12",140        "topic": "CAPITAL_CHANGES",141        "topic_name": {142          "de": "Kapitaländerungen",143          "en": "Capital changes"144        },145        "occurred_on": "2026-10-29",146        "announced_on": "2026-10-29",147        "date_basis": "REGISTER_ENTRY"148      },149      "organization": {150        "type": "ORGANIZATION",151        "entity_id": "979610227990c4c5368c9356923080df",152        "current_profile": {153          "name": "Norlando GmbH",154          "registration": {155            "register_type": "HRB",156            "register_number": "25441",157            "court": "Bonn",158            "register_locality": "Bonn",159            "registration_authority_id": "R3201",160            "register_entity_name": "Bonn HRB 25441"161          },162          "legal_form": {163            "name": {164              "de": "Gesellschaft mit beschränkter Haftung"165            },166            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},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 · レスポンス例：2026年10月26日から30日に公告された資本金の変更（抜粋）

1ページには最大 20 件のシグナルが新しい順に入り、20 クレジット かかります。さらにある場合、pagination.next_cursorに次のページへのポインタが入ります。同じフィルターとともにcursorとして渡し返してください。

fromとtoは公告日（announced_on）を基準にします。イベント自体（occurred_on）はそれより前のことがあります。例えば合併の決議です。

特定の企業には、organization_idsで最大 5 件のentity_idを渡します。毎日の同期では、直近数日分をリクエストし、has_moreがfalseになるまでページ送りを続けてください。

シグナルは公告より少し遅れて現れ、複数のページに出てくることがあります。そのため期間を重ねてリクエストし、event.idで重複を取り除いてください。

モニタリングで個々の企業を監視する

モニターは 1～30 日ごとに、企業の新しいシグナルをチェックします。新しいシグナルはそれぞれ、署名付きWebhookとしてあなたのWebhookエンドポイントに送ります。設定方法は次のとおりです：

  1. Webhookエンドポイントを作成します。WebアプリのモニタリングからでもAPIからでも作成できます。APIではPOST /v1/account/webhook-endpointsに、フィールドnameとurl（HTTPSのみ）を指定します。このリクエストには、アカウント › APIキーにある管理者トークンをヘッダーAuthorization: Bearer …で渡す必要があります。APIキーでは足りません。レスポンスにはエンドポイントのid（wep_…）と、一度だけ表示される署名シークレットが含まれます。
  2. POST /v1/account/webhook-endpoints/{id}/verifyでエンドポイントを検証します。私たちはendpoint.verificationタイプのメッセージを送ります。エンドポイントは 15 秒以内に2xxで応答し、data.challengeをヘッダーwebhook-verificationで返します。そうして初めて配信を受け取れるようになります。
  3. entity_id、poll_interval_days、そして手順1のidをendpoint_idsに指定して、モニターを作成します。
cURL 
curl -X POST "https://handelsregister.ai/api/v1/account/monitors" \
  -H "x-api-key: YOUR_API_KEY" \
  -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_YOUR_ENDPOINT_ID"]
  }'

モニターへの書き込みリクエストにはIdempotency-Keyが必要です。同じキーで繰り返しても、2つ目のモニターは作成されません。

モニターの作成は無料です。モニターはまず直近数日のシグナルを既知としてマークし、送信はしません。その後、最初の 30 日間のサイクル料金を計上し、すぐに最初のチェックを実行します。

コストと制限
内容 クレジット
毎日 チェックするモニター、30 日間 50
3 日ごとに チェックするモニター、30 日間 40
7 日ごとに チェックするモニター、30 日間 20
30 日ごとに チェックするモニター、30 日間 10
期間内の追加の成功チェック1回ごと +2

制限：1分あたり 30 リクエスト。 作成、更新、削除：1分あたり 10 回。

スケジュールのコストは事前に無料で問い合わせられます： 

curl -G "https://handelsregister.ai/api/v1/account/monitoring/pricing" \
  -H "x-api-key: YOUR_API_KEY" \
  --data-urlencode 'poll_interval_days=7'
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 · レスポンス例：7日ごとのチェックの料金

一時停止、再開、スケジュールの変更、削除はaccount/monitorsで説明しています。

Webhookを受信して検証する

各配信はJSONのPOSTです。検証時には、typeがendpoint.verificationのメッセージを送ります。2xxで応答し、ヘッダーwebhook-verificationにdata.challengeの値を設定してください。新しいシグナルの場合、typeはorganization.signal.detectedで、data.signalはsignalsの項目と同じ形式です。

各配信には3つのヘッダーが含まれます：

フィールド
フィールド 意味
webhook-id メッセージの識別子。再試行でも同じです。重複の検出に使ってください。
webhook-timestamp この配信試行の時刻（Unix秒）。
webhook-signature v1,…形式の1つ以上の署名（スペース区切り）。

署名はオープン標準「Standard Webhooks」に従います：webhook-id.webhook-timestamp.bodyに対するHMAC-SHA256です。キーは、シークレットのwhsec_以降の部分をBase64デコードしたものです。処理する前に、変更されていないボディに対して署名を検証してください。 

import base64
import hashlib
import hmac
import time


def verify_webhook(secret: str, headers: dict, body: bytes) -> bool:
    """handelsregister.ai からの配信の署名を検証します。"""
    msg_id = headers["webhook-id"]
    timestamp = headers["webhook-timestamp"]
    if abs(time.time() - int(timestamp)) > 5 * 60:
        return False  # 5分より古いか新しい
    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

15 秒以内に2xxで応答し、処理はその後に行ってください。2xxがなければ、間隔を広げながら最大約3日間配信を再試行します。シークレットのローテーション後、7日間はメッセージに両方の署名が付きます。

配信、再試行、すべてのフィールドはaccount/webhook-endpointsで説明しています。

ウォッチリストとフィード

ウォッチリストは、自前のサーバーなしの方法です。Webアプリのモニタリングで、ワンクリックで企業をフォローできます。モニターなしで最大 15 社をフォローできます。モニターのある企業は自動的にウォッチリストに入ります。

ウォッチリストには、あなたの企業の過去12か月のシグナルが新しい順に表示されます。「フィードURLを生成」で、任意のフィードリーダー向けのRSSまたはAtomフィードとして受け取れます。

フィードは、リーダーがどれだけ頻繁に取得しても、最大1時間に1回更新されます。更新1回につき 20 クレジット かかります。残高が足りない場合、フィードは前回の状態を表示し、クレジットができ次第また更新されます。

URLには秘密のキーが含まれ、一度だけ表示されます。更新すると、古いURLはすぐに使えなくなります。?lang=enを付けると、フィードは英語になります。

同じデータは、APIでSignalsにorganization_idsを指定して取得できます。

次へ

signals Signalsのすべてのパラメータ、トピック、フィールド。 account/monitors モニターの作成、変更、一時停止、削除。 account/webhook-endpoints Webhookエンドポイント、ペイロード、配信。 公告とイベント Signalsの各トピックの対象。