Nimble REST API
The Nimble CRM REST API — 89 operations across contacts, contact custom fields, contact and deal pipelines, deals, leads, activities, tasks, messages and users. Nimble publishes a full OpenAPI 3.0.0 contract (58 paths, 180 component schemas) embedded in its developer reference. Authentication accepts an account API key as an X-Nimble-Token header or an Authorization: Bearer token, or OAuth 2.0 authorization_code with the coarse basic / contacts / deals scopes. Versioning is per resource family: /api/v1 for contacts, /api/v2 for deals.
Documentation
Documentation
https://www.nimble.com/developers/docs/
APIReference
https://www.nimble.com/developers/docs/
Authentication
https://raw.githubusercontent.com/api-evangelist/nimble/refs/heads/main/authentication/nimble-authentication.yml
GettingStarted
https://support.nimble.com/en/articles/502755-nimble-api-access