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Eckari UK Companies House Filing History API
x402
Eckari UK Companies House Filing History API is a paid API for AI agents from api.eckari.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-07).
Retrieves paginated filing history for a UK company from Companies House, including document URLs, form types, categories, and annotations.
Price / call$0.005
Success—
StatusUnknown
How this service works
Eckari is the machine-native utility layer for capabilities agents do not already have. Every route is a provider-neutral capability with channel pricing for Eckari account keys and accountless x402 payment.
Output
Returns a paginated list of filing history items for the specified UK company, each containing the filing date, form type (e.g. SH03, CS01), category, human-readable description, document URL (linking to the PDF on Companies House), transaction ID, any register annotations, and whether the document was paper-filed. Also includes pagination metadata (total count, offset, has_more, next_offset) and echoes back the applied query parameters.
Example use cases
Due diligence on UK acquisition target
“I'm doing due diligence on a potential acquisition — can you pull the full filing history for UK company 03849656, starting from the beginning, and flag any liquidation or mortgage filings?”
Tracking share capital changes
“Get me the capital-category filings for UK company 00445790 — I want to see all the share purchase and allotment documents they've filed, up to 50 at a time.”
Verifying incorporation and officer history
“Look up the incorporation and officers filings for UK company number 07495895 so I can verify when it was set up and who the original directors were.”
Technical details
Endpoint
GEThttps://api.eckari.com/v1/companies/uk/%7Bcompany_number%7D/filings?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need programmatic, paginated access to a UK company's complete filing history from Companies House, especially when you need document URLs, category filtering (e.g. only accounts or mortgages), or annotation data. Prefer it over manual Companies House web lookups when building automated due diligence, compliance monitoring, or corporate intelligence pipelines. It is particularly well-suited for agents that need to iterate through thousands of filings using offset pagination or filter to specific regulatory categories.
Side effects
- Invalid company number format (not 1-8 alphanumeric chars) returns INVALID_INPUT before any payment
- Company not found on Companies House register returns 404 or empty result
- Category filter string with invalid characters or format is rejected
- offset exceeding 10000 is rejected by schema validation
- Payment failure via x402 results in 402 response with no data
- Companies House upstream unavailability causes gateway error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"page": {
"limit": 3,
"total": 8367,
"offset": 0,
"has_more": true,
"returned": 3,
"next_offset": 3
},
"items": [
{
"date": "2026-08-06",
"type": "SH03",
"pages": 4,
"category": "capital",
"annotations": [
{
"date": "2026-08-06",
"annotation": "Clarification HMRC confirmation received that appropriate Stamp Duty has been paid for this transaction.",
"description": "annotation"
}
],
"description": "Purchase of own shares.",
"paper_filed": true,
"subcategory": null,
"document_url": "https://find-and-update.company-information.service.gov.uk/company/00445790/filing-history/MzUzNjI5NTk0OWFkaXF6a2N4/document?format=pdf",
"has_document": true,
"transaction_id": "MzUzNjI5NTk0OWFkaXF6a2N4",
"description_source": "enumeration"
},
{
"date": "2026-08-06",
"type": "SH03",
"pages": 4,
"category": "capital",
"annotations": [
{
"date": "2026-08-06",
"annotation": "Clarification HMRC confirmation received that appropriate Stamp Duty has been paid for this transaction.",
"description": "annotation"
}
],
"description": "Purchase of own shares.",
"paper_filed": true,
"subcategory": null,
"document_url": "https://find-and-update.company-information.service.gov.uk/company/00445790/filing-history/MzUzNjI5NTk1OWFkaXF6a2N4/document?format=pdf",
"has_document": true,
"transaction_id": "MzUzNjI5NTk1OWFkaXF6a2N4",
"description_source": "enumeration"
},
{
"date": "2026-08-06",
"type": "SH03",
"pages": 4,
"category": "capital",
"annotations": [
{
"date": "2026-08-06",
"annotation": "Clarification HMRC confirmation received that appropriate Stamp Duty has been paid for this transaction.",
"description": "annotation"
}
],
"description": "Purchase of own shares.",
"paper_filed": true,
"subcategory": null,
"document_url": "https://find-and-update.company-information.service.gov.uk/company/00445790/filing-history/MzUzNjI5NTk3MWFkaXF6a2N4/document?format=pdf",
"has_document": true,
"transaction_id": "MzUzNjI5NTk3MWFkaXF6a2N4",
"description_source": "enumeration"
}
],
"query": {
"detail": "summary",
"category": null
},
"company_number": "00445790",
"filing_history_status": "filing-history-available",
"is_filing_history_available": true
},
"meta": {
"source": "companies_house",
"version": "3.0.0",
"freshness": "live",
"capability": "company.uk.filings"
}
}
}Tags
x402
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