Buildkite · Authentication Profile

Buildkite Com Authentication

Authentication

Buildkite authenticates every API with Bearer-style tokens. The REST and GraphQL APIs use a user/organization API access token carrying granular scopes; the Agent API uses per-cluster Agent Tokens. A JWT public-key-pair signing method for the REST API is in preview. The remote MCP server additionally supports OAuth. Scope surface is captured in scopes/buildkite-com-scopes.yml.

Buildkite secures its APIs with http and oauth2 across 3 declared security schemes, as derived from its OpenAPI definitions.

CI/CDContinuous IntegrationContinuous DeliveryDevOpsPipelinesHybrid CIBuild AutomationTest EnginePackage RegistriesAgentsGraphQLRESTMCPWebhook

Methods: http, oauth2 Schemes: 3 OAuth flows: API key in:

Security Schemes

bearerAuth http

scheme: bearer

agentToken http

scheme: bearer

oauth oauth2

Source

Authentication Profile

generated: '2026-06-20'
method: searched
source: openapi/buildkite-rest-api-openapi.yml, openapi/buildkite-agent-api-openapi.yml
docs: https://buildkite.com/docs/apis/managing-api-tokens
description: >-
  Buildkite authenticates every API with Bearer-style tokens. The REST and GraphQL
  APIs use a user/organization API access token carrying granular scopes; the Agent
  API uses per-cluster Agent Tokens. A JWT public-key-pair signing method for the REST
  API is in preview. The remote MCP server additionally supports OAuth. Scope surface
  is captured in scopes/buildkite-com-scopes.yml.
summary:
  types:
  - http
  - oauth2
  http_schemes:
  - bearer
  scoped: true
  scopes: scopes/buildkite-com-scopes.yml
schemes:
- name: bearerAuth
  type: http
  scheme: bearer
  bearerFormat: API access token
  applies_to: [REST API, GraphQL API]
  header: "Authorization: Bearer <token>"
  scoped: true
  note: >-
    Token scopes gate access (read_builds, write_pipelines, ...); GraphQL access is a
    separate boolean toggle. A JWT public-key signature method is in preview.
  sources:
  - openapi/buildkite-rest-api-openapi.yml
- name: agentToken
  type: http
  scheme: bearer
  bearerFormat: Agent Token (sent as `Token <value>`)
  applies_to: [Agent API]
  header: "Authorization: Token <value>"
  note: Issued per cluster; used by the Buildkite Agent to register and run jobs.
  sources:
  - openapi/buildkite-agent-api-openapi.yml
- name: oauth
  type: oauth2
  applies_to: [Remote MCP Server]
  note: >-
    The hosted MCP server (mcp.buildkite.com/mcp) uses OAuth with short-lived (12h)
    access tokens; the /direct endpoint accepts API-token pass-through instead.

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