Civitai · Capability

Civitai OAuth API — Authorization

Civitai OAuth API — Authorization. OAuth 2.0 authorization-code with PKCE for third-party apps acting on behalf of a Civitai user. Supports scoped tokens, refresh, and per-app Buzz spend caps. Self-contained Naftiko capability.

Civitai OAuth API — Authorization is a Naftiko capability published by Civitai, one of 13 capabilities the APIs.io network indexes for this provider. It bundles 2 operations across the GET and POST methods rooted at /v1/oauth.

The capability includes 1 state-changing operation. Lead operation: Exchange OAuth authorization code or refresh token for an access token. Can be deployed as a REST endpoint, MCP tool, or Agent Skill via Naftiko.

Tagged areas include Civitai, OAuth, PKCE, and Authentication.

Run with Naftiko CivitaiOAuthPKCEAuthentication

What You Can Do

GET
Authorize — Begin OAuth authorization.
/v1/oauth/authorize
POST
Exchangetoken — Exchange token.
/v1/oauth/token

MCP Tools

civitai-oauth-exchange

Exchange OAuth authorization code or refresh token for an access token.

Capability Spec

oauth-authorization.yaml Raw ↑ 
naftiko: 1.0.0-alpha2
info:
  label: Civitai OAuth API — Authorization
  description: 'Civitai OAuth API — Authorization. OAuth 2.0 authorization-code with PKCE for third-party
    apps acting on behalf of a Civitai user. Supports scoped tokens, refresh, and per-app Buzz spend caps.
    Self-contained Naftiko capability.'
  tags:
  - Civitai
  - OAuth
  - PKCE
  - Authentication
  created: '2026-05-25'
  modified: '2026-05-25'
binds:
- namespace: env
  keys:
    CIVITAI_CLIENT_ID: CIVITAI_CLIENT_ID
    CIVITAI_CLIENT_SECRET: CIVITAI_CLIENT_SECRET
capability:
  consumes:
  - type: http
    namespace: oauth-authorization
    baseUri: https://civitai.com
    description: Civitai OAuth.
    resources:
    - name: oauth-authorize
      path: /api/oauth/authorize
      operations:
      - name: authorize
        method: GET
        description: Begin OAuth authorization-code with PKCE flow.
        outputRawFormat: raw
        outputParameters:
        - { name: result, type: object, value: $. }
        inputParameters:
        - { name: client_id, in: query, type: string, required: true }
        - { name: redirect_uri, in: query, type: string, required: true }
        - { name: response_type, in: query, type: string, required: true }
        - { name: scope, in: query, type: string }
        - { name: state, in: query, type: string }
        - { name: code_challenge, in: query, type: string, required: true }
        - { name: code_challenge_method, in: query, type: string, required: true }
    - name: oauth-token
      path: /api/oauth/token
      operations:
      - name: exchangetoken
        method: POST
        description: Exchange authorization code or refresh token for an access token.
        outputRawFormat: json
        outputParameters:
        - { name: result, type: object, value: $. }
        inputParameters:
        - { name: body, in: body, type: object, required: true }
  exposes:
  - type: rest
    namespace: oauth-authorization-rest
    port: 8080
    description: REST adapter for OAuth.
    resources:
    - path: /v1/oauth/authorize
      name: oauth-authorize
      operations:
      - method: GET
        name: authorize
        description: Begin OAuth authorization.
        call: oauth-authorization.authorize
        with:
          client_id: rest.query.client_id
          redirect_uri: rest.query.redirect_uri
          response_type: rest.query.response_type
          scope: rest.query.scope
          state: rest.query.state
          code_challenge: rest.query.code_challenge
          code_challenge_method: rest.query.code_challenge_method
        outputParameters: [{ type: object, mapping: $. }]
    - path: /v1/oauth/token
      name: oauth-token
      operations:
      - method: POST
        name: exchangetoken
        description: Exchange token.
        call: oauth-authorization.exchangetoken
        with: { body: rest.body }
        outputParameters: [{ type: object, mapping: $. }]
  - type: mcp
    namespace: oauth-authorization-mcp
    port: 9090
    transport: http
    description: MCP adapter for OAuth.
    tools:
    - name: civitai-oauth-exchange
      description: Exchange OAuth authorization code or refresh token for an access token.
      hints: { readOnly: false, destructive: false, idempotent: false }
      call: oauth-authorization.exchangetoken
      with: { body: tools.body }
      outputParameters: [{ type: object, mapping: $. }]