fourzerotwo-si

fourzerotwo-si Uk Business API

UK Company Due Diligence: One call: a UK company's register status, overdue filings, late accounts, recent name and office changes, Gazette insolvency notices, LEI and a sanctions name screen, with risk flags.

Documentation GitHub OpenAPI

Operations 1

GET /v1/uk-business/due-diligence UK Company Due Diligence: Company due-diligence check #

Specifications

⚙

OpenAPI

https://artifacts.apis.io/fourzerotwo-si/openapi/fourzerotwo-si-uk-business-api-openapi.yml

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Fourzerotwo Si Uk Business API
  version: 1.1.0
  contact:
    url: https://fourzerotwo.si
  description: 'Operations tagged uk-business across 2 of this provider''s published API definitions: openapi.json, fourzerotwo-si-openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://fourzerotwo.si
tags:
- name: uk-business
  description: 'UK Company Due Diligence: One call: a UK company''s register status, overdue filings, late accounts, recent name and office changes, Gazette insolvency notices, LEI and a sanctions name screen, with risk flags.'
paths:
  /v1/uk-business/due-diligence:
    get:
      operationId: uk_business__due_diligence
      summary: 'UK Company Due Diligence: Company due-diligence check'
      description: 'Register profile plus risk flags: status, overdue accounts or confirmation statement, late accounts, insolvency history, Gazette notices, recent name/office changes, LEI and sanctions name screen. Price: $0.08 USDC per call via x402.'
      tags:
      - uk-business
      externalDocs:
        url: https://fourzerotwo.si/apis/uk-business/due-diligence
      parameters:
      - name: company_number
        in: query
        required: true
        description: 8-character Companies House number, e.g. "00445790" or "SC123456"
        schema:
          type: string
          maxLength: 10
        example: 00445790
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.080000'
      x-mcp-tool: uk-business__due-diligence
    servers:
    - url: https://fourzerotwo.si
components:
  responses:
    PaymentRequired:
      description: x402 payment required. The body (also base64 in the PAYMENT-REQUIRED header) lists accepted payments.
      headers:
        PAYMENT-REQUIRED:
          schema:
            type: string
          description: Base64 JSON x402 v2 PaymentRequired
      content:
        application/json:
          schema:
            type: object
            properties:
              x402Version:
                type: integer
              error:
                type: string
              accepts:
                type: array
                items:
                  type: object
    Error:
      description: 400 = invalid input, 404 = not found at the source, 502 = the source failed. Never charged.
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: string
              charged:
                type: boolean
  securitySchemes:
    freeKey:
      type: apiKey
      in: header
      name: X-API-Key
      description: Optional free key (fzt_…) for the free tier.
x-refined-from:
- openapi.json
- fourzerotwo-si-openapi.json