# Finalcad One Authentication API

**Canonical:** https://apis.io/apis/finalcad/finalcad-one-authentication-api/  
**Provider:** Finalcad — https://apis.io/providers/finalcad/  
**Base URL:** https://developer.finalcad.cloud/api  
**Documentation:** https://developer.finalcad.com/

Finalcad One Authentication API is one of 6 APIs that [Finalcad](https://apis.io/providers/finalcad/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Authentication. The published artifact set on APIs.io includes an OpenAPI specification, authentication docs, and API documentation.

Authentication surface of the Finalcad One API — the legacy user-token exchange and the connected-user lookup. Current integrations authenticate with an organization API key in X-API-Key plus an Authorization token header rather than calling the token endpoint. 2 operations.

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/finalcad/refs/heads/main/openapi/finalcad-authentication-openapi.yml
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/finalcad/refs/heads/main/authentication/finalcad-authentication.yml
- **PostmanCollection** — https://raw.githubusercontent.com/api-evangelist/finalcad/refs/heads/main/collections/finalcad.postman_collection.json
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/finalcad/refs/heads/main/overlays/finalcad-authentication-overlay.yaml
- **Documentation** — https://developer.finalcad.com/

## Other Finalcad APIs (5)

- [Finalcad One Project API](https://apis.io/apis/finalcad/finalcad-one-project-api/)
- [Finalcad One Organization Management API](https://apis.io/apis/finalcad/finalcad-one-organization-api/)
- [Finalcad One Medias API](https://apis.io/apis/finalcad/finalcad-one-medias-api/)
- [Finalcad One Webhooks API](https://apis.io/apis/finalcad/finalcad-one-webhooks-api/)
- [Finalcad One Libraries API](https://apis.io/apis/finalcad/finalcad-one-libraries-api/)

## Tags

Authentication

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/finalcad/finalcad-one-authentication-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/finalcad/.