PASAR API

🇬🇧 Companies House API ~ UK company registry, filings & officers

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Official UK company register: profiles, officers, filing history and charges. Free API key, HTTP-basic auth. Global, works for MY.

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# Companies House API ~ UK company registry, filings & officers needs an API key ~ get yours at:
# https://developer.company-information.service.gov.uk/
curl 'https://api.company-information.service.gov.uk' \
  -H 'X-API-Key: YOUR_API_KEY'

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I'm integrating a United Kingdom API into my app.

API: Companies House API ~ UK company registry, filings & officers
Provider: UK Companies House
Auth: requires an API key (sign up: https://developer.company-information.service.gov.uk/)
Pricing: free
Base URL: https://api.company-information.service.gov.uk
Important note: Official UK company register: profiles, officers, filing history and charges. Free API key, HTTP-basic auth. Global, works for MY.

Source: UK Companies House (https://developer.company-information.service.gov.uk/)
Source type: Provider API or developer docs
Endpoint type: Provider API base URL
Integration difficulty: Needs API key
Last checked: 2026-06-29
Production caveat: Keep credentials server-side and confirm current limits, pricing, and webhook/error behaviour in the provider docs.

Help me set up the correct onboarding/authentication path and make the first valid request ~ explain exactly where credentials go and what must happen before production.

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