Public API

Company intelligence
for developers

Simple REST endpoints. No authentication required. Search companies, retrieve profiles, and access sector benchmarks.

Base URL https://api.quantr.co

API reference

All endpoints return JSON. Rate limiting applies per IP. No API key is required for public endpoints.

GET /api/companies/:kvkNumber

Retrieve the full stored profile for a company that has been analysed on Quantr. Includes registration data, sector classification, trade names, and analysis history. Dutch companies include KvK enrichment.

Path parameters
ParameterTypeDescription
kvkNumber required string The company identifier — for Dutch companies this is the 8-digit KvK number.
Request
GET https://api.quantr.co/api/companies/34281905
Response
{ "kvkNumber": "34281905", "name": "Bakker & Partners B.V.", "sbiCode": "70221", "sbiDescription": "Organisatie-adviesbureaus", "city": "Amsterdam", "employees": "10-49", "tradeNames": ["BP Advies"], "lastAnalysedAt": "2026-03-31T10:00:00.000Z", "analysisHistory": [...] }
GET /api/companies

List all companies that have been analysed on Quantr and have stored profiles. Returns a lightweight summary — use the profile endpoint for full data.

Request
GET https://api.quantr.co/api/companies
Response
[ { "kvkNumber": "34281905", "name": "Bakker & Partners B.V.", "sector": "Zakelijke dienstverlening", "lastAnalysed": "2026-03-31T10:00:00.000Z", "analysisCount": 3 }, ... ]
GET /api/health

Simple health check to verify the API is reachable and running.

Response
{ "status": "ok" }
USE WITH CLAUDE
Access the API directly from Claude

The Quantr MCP wraps these endpoints as Claude tools, so you can ask questions about any company directly in a conversation.

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