Developer platform · API v1

Build with the FastCRM API.

Read the live demo database through a typed, versioned API. Selected integration writes are implemented behind bearer-token authentication.

Open Swagger UIOpen ReDocDownload swagger.jsonView on GitHub
Public preview access. GET endpoints require no authentication. Writes return 503 until FASTSME_API_TOKEN is configured; enabled clients send Authorization: Bearer <token>.

Resources

Contacts

People associated with customer organisations.

GET /api/v1/contactsGET /api/v1/contacts/{id}

Companies

Customer and prospect organisation records.

GET /api/v1/companiesGET /api/v1/companies/{id}

Leads

Unqualified and qualified sales leads.

GET /api/v1/leadsGET /api/v1/leads/{id}

Opportunities

Pipeline opportunities and their commercial stages.

GET /api/v1/opportunitiesGET /api/v1/opportunities/{id}

Quick start

curl "https://crm.fastsme.com/api/v1/contacts?limit=20"

python - <<'PY'
import requests
rows = requests.get("https://crm.fastsme.com/api/v1/contacts", timeout=20).json()
print(rows["data"])
PY

Runtime OpenAPI: /api/openapi.json · Stable compatibility schema: /swagger.json · Interactive docs: /api/docs