Search for companies by name and jurisdiction via the OpenCorporates API
domain: api.opencorporates.com · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Register for an OpenCorporates API key at opencorporates.com and include it on every request either as a query parameter api_token or in the X-API-TOKEN request header
Search for companies with GET /v0.4/companies/search?q={company_name}&jurisdiction_code={code} where jurisdiction_code is an ISO 3166-2-style code (e.g., us_de for Delaware, gb for UK); results are paginated
Inspect the companies array in the response; each result includes company_number, jurisdiction_code, name, company_type, current_status, and incorporation_date
Fetch the full company record with GET /v0.4/companies/{jurisdiction_code}/{company_number} to retrieve registered address, officers, filings, and corporate_groupings
For beneficial ownership and corporate structure, call the corporate_groupings endpoint or download the supplemental relationships file available separately for bulk use
Known gotchas
Free and self-service API plans have monthly query limits; bulk compliance screening workflows should use a commercial plan to avoid rate-limit errors mid-run
Company data is sourced from public registries and may lag official filings by days to weeks; do not rely solely on OpenCorporates for real-time status in regulated KYB workflows
jurisdiction_code values follow an OpenCorporates-specific convention (e.g., us_de, gb, fr) that differs from standard ISO codes in some cases; check the jurisdictions reference endpoint for the correct codes
Give your agent this knowledge — and 15,500+ more routes
One MCP install gives any agent live access to the full route map across 5,700+ domains, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp
Need this verified for your stack — or a route we don't have yet?