Spendesk

Spendesk Authentication API

How to get an access token: Public API credentials (API keys) exchanged with HTTP Basic authentication, or OAuth 2.0 for partner apps — authorization code with PKCE, the token endpoint (code exchange and refresh), dynamic client registration and discovery metadata. Part of: [How to Authenticate](/reference/how-to-authenticate).

GitHub OpenAPI

Operations 7

2 of 7 operations are conformant: apis.io called them with no credentials and the responses matched this contract. Checked 2026-11-12. how this works · status file

GET /.well-known/oauth-authorization-server Authorization Server Metadata conformant #
GET /.well-known/oauth-protected-resource/v1/mcp MCP Protected Resource Metadata conformant #
POST /v1/auth/token Create Access Token (Public API credentials) #
GET /v1/oauth2/authorize Request Authorization (OAuth app PKCE) #
POST /v1/oauth2/register Dynamic Client Registration #
POST /v1/oauth2/token/create OAuth2 Token Endpoint (OAuth app PKCE) #
POST /v1/oauth2/token/refresh Refresh Token (Deprecated) #

Documentation

📖
Documentation
https://developer.spendesk.com/reference/general
📖
Authentication
https://developer.spendesk.com/reference/how-to-authenticate
📖
RateLimits
https://developer.spendesk.com/public/reference/rate-limiting

Specifications

⚙
OpenAPI
https://artifacts.apis.io/spendesk/openapi/spendesk-authentication-api-openapi.yml

Schemas & Data

📊
JSONSchema
https://artifacts.apis.io/spendesk/json-schema/spendesk-token-schema.json

Other Resources

🔗
ChangeLog
https://developer.spendesk.com/changelog
🔗
PostmanCollection
https://www.postman.com/spendesk-pde-sas/spendesk-public-api/collection/q48314q/spendesk-public-api

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OpenAPI Specification

spendesk-authentication-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Spendesk Public Authentication API
  description: Spendesk Public API
  version: '1.0'
  summary: Spendesk Public API
  contact:
    email: support-public-api@spendesk.com
    url: https://developer.spendesk.com/
    name: Spendesk for Developers
  termsOfService: https://www.spendesk.com/en/legals/terms/api-agreement
servers:
- url: https://public-api.spendesk.com
  description: Production
- url: https://public-api.demo.spendesk.com
  description: Sandbox
tags:


# --- truncated at 32 KB (56 KB total) ---
# Full source: https://artifacts.apis.io/spendesk/openapi/spendesk-authentication-api-openapi.yml