# Eckari UK Company Accounts Filing Status

> Eckari UK Company Accounts Filing Status is a paid API for AI agents from api.eckari.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns the accounts filing status of a UK Companies House company, including accounting reference date, last filed accounts type and period, next due date, and an overdue flag.

## Facts

- Endpoint: GET https://api.eckari.com/v1/companies/uk/:company_number/accounts
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/eckari-uk-company-accounts-filing-status-c2d8e887
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7MsnyQyfw09S8CCv18Qks

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 eckari-uk-company-accounts-filing-status-c2d8e887
```

Example prompt: Can you check the accounts filing status for UK company number 09876543 — specifically when the next accounts are due and whether they're overdue?

## When to prefer this

Use this endpoint when you need the accounts filing position of a UK-registered company — specifically the due dates, overdue status, and last filed accounts metadata — without needing the actual financial statements. Prefer this over general company profile lookups when the question is specifically about filing compliance or deadlines. This is more targeted than a full company profile endpoint and cheaper per call when only accounts status is needed.

## Known failure modes

- Invalid or malformed company number (not matching ^[A-Za-z0-9]{1,8}$) returns INVALID_INPUT before any payment is charged
- Company number not found in Companies House register returns a not-found error
- Whitespace-only or overly long company number is rejected as INVALID_INPUT
- Companies House upstream unavailability may cause transient errors
- Dissolved or struck-off companies may return limited or historical data

## How this service works

Return the accounts filing status of a UK company from the Companies House register — the accounting reference date, the last accounts filed (type and period), the next accounts due date and a derived overdue flag. This is the filing position, not the financial statements: no turnover, profit or balance-sheet figures are published here. Use when: When are this UK company's accounts due?

## Output

Returns the company's accounting reference date, the type and period of the most recently filed accounts, the next accounts due date, and a derived boolean overdue flag indicating whether the company has missed its filing deadline. No financial statement figures (turnover, profit, balance sheet) are included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "company_number"
     ],
     "properties": {
      "company_number": {
       "type": "string",
       "pattern": "^\\s*(?:[0-9]{1,8}|[A-Za-z][0-9]{7}|[A-Za-z]{2}[0-9]{6}|[A-Za-z]{2}[0-9]{5}[A-Za-z]|[A-Za-z]{2}[0-9]{4}[A-Za-z]{2})\\s*$",
       "maxLength": 10,
       "minLength": 1,
       "description": "Companies House company number, also called the company registration number (CRN). Accepted shapes are the register's own — 1-8 digits (zero-padded to 8, e.g. 445790 → 00445790), one letter + 7 digits (R0000001), two letters + 6 digits (SC002180, NI000001, OC123456, OE000001), or the registered-society suffix forms (two letters + 5 digits + 1 letter; two letters + 4 digits + 2 letters). Case-insensitive; surrounding whitespace is ignored (which is why maxLength is 10); internal spaces and punctuation are not accepted. Any other value (for example PROBE) is rejected as INVALID_INPUT before payment and before any upstream call."
      }
     },
     "additionalProperties": false
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/eckari-uk-company-accounts-filing-status-c2d8e887/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.eckari.com](https://www.zero.xyz/host/api.eckari.com/llms.txt)