# UK Companies House Filings API

> UK Companies House Filings API is a paid API for AI agents from property.payapi.market, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-17).

Retrieves a list of official Companies House filing records for a given UK company by registration number

## Facts

- Endpoint: POST https://property.payapi.market/filings?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/uk-companies-house-filings-api-a9151e9f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3J6hL9HH2J_mC8TTKJjAU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability uk-companies-house-filings-api-a9151e9f -d '<json body>'
```

Example prompt: Can you pull up the 10 most recent Companies House filings for UK company number 00445790 and tell me what types of documents they submitted and when?

## When to prefer this

Choose this endpoint when you need structured filing history from UK Companies House — specifically filing types, dates, and categories — for a known company registration number. Prefer it over general web search when you need machine-readable, structured corporate filing records for UK entities, especially for due diligence, compliance checks, or supplier vetting workflows.

## Known failure modes

- Invalid or non-existent company number returns empty results or error
- Limit parameter outside 1–50 range may be rejected
- Payment failure via x402 protocol blocks the request
- Missing required company_number field returns a validation error
- Rate limiting if too many calls are made in quick succession

## How this service works

Production API for UK sold prices, rental yields, and stamp duty. Paid via x402 protocol. Designed for AI agent consumption.

## Output

Returns a JSON object containing an array of filing records for the specified UK company, each with a date, filing type code (e.g. AA, CS01), category (e.g. accounts, confirmation-statement), and human-readable description. Also includes the total filing count and the queried company number.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "maximum": 50,
   "minimum": 1,
   "description": "Max filings to return. Defaults to 20."
  },
  "company_number": {
   "type": "string",
   "description": "UK Companies House registration number."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "filings": [
   {
    "date": "2024-09-30",
    "type": "AA",
    "category": "accounts",
    "description": "Full accounts made up to 24 February 2024"
   },
   {
    "date": "2024-07-01",
    "type": "CS01",
    "category": "confirmation-statement",
    "description": "Confirmation statement made on 1 July 2024"
   }
  ],
  "total_count": 2,
  "company_number": "00445790"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/uk-companies-house-filings-api-a9151e9f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from property.payapi.market](https://www.zero.xyz/host/property.payapi.market/llms.txt)