OpenCorporates API
opencorporates.com
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Overview
Researched from the vendor's own pages; every fact links to its source and the day we checked it.
OpenCorporates aggregates company data from official registers. Its REST API (v0.4.8) returns all website data as JSON or XML: company search and lookup by jurisdiction and company number, officers, filings and related data, plus an OpenRefine reconciliation API. An API key (api_token) is required; data access is free for open data projects under the same open licence.
Company
Verified- Legal name
- Not confirmed
- Headquarters
- Not confirmed
- Founded
- Not confirmed
- Employees
- Not confirmed
- Ownership
- Not confirmed
- Status
- active
- Kind
- Aggregator (waterfall or reseller)
- Website
- opencorporates.com
- Support
- docs
API
Verified- Access
- Self-serve API
- Style
- REST
- Auth
- API key (query)
- Base URL
https://api.opencorporates.com/v0.4- Features
- Bulk —Async —Webhooks —MCP —Sandbox —
- Rate limit
- Not confirmed
- Pagination
- page and per_page parameters
- Docs
- Reference
Pricing
Verified- Model
- Not confirmed
- List prices
- Contact sales
- Free tier
- Free for open data projects under the open licence
- Checked
- Sep 29, 2026
Compliance
- SOC 2
- Not confirmed
- GDPR
- Not confirmed
- CCPA
- Not confirmed
- DPA
- Not confirmed
- Resale / storage
- Unknown until a written agreement says otherwise
Relationships
- Integrations
- Not confirmed
- Alternatives
- None named by the vendor
Sources (2)
- OpenCorporates API Reference 0.4.8checked Sep 29, 2026
- OpenCorporateschecked Sep 29, 2026
Placement in the Grid
Where this vendor sits on the GridRouter Grid in each category it serves. No vendor pays for placement.
API
The vendor's OpenAPI document as stored in the catalog, its operations, and the rate limits it publishes.
Rebuilt from the vendor's public docs, only what the pages show. Each operation links the page it came from; response shapes the docs don't spell out are left empty rather than guessed.
| Method | Path | Summary | Params | Source |
|---|---|---|---|---|
| GET | /companies/search | Company search | 2 | Docs |
| GET | /companies/{jurisdiction_code}/{company_number} | Company by number | 2 | Docs |
| GET | /account_status | Account status | 0 | Docs |
Rate limits
No published rate limits found. Without a published limit GridRouter paces conservatively (1 request per second).