Aider Git API

openapi: 3.0.3
info:
  title: Aider CLI Chat Git API
  version: 0.86.1
  description: Documentation surface for the Aider command-line interface. Aider has no hosted REST API and does not bind to a network port — it runs entirely in a developer's terminal against the local Git working tree. This OpenAPI document models the Aider command surface as if it were a REST API so it can be consumed by API-centric tooling (catalogs, registries, governance rule engines, capability runtimes). Each slash command (`/add`, `/diff`, `/commit`, etc.) is modeled as a path; each launch-flag family is modeled as a configuration path. Servers and security blocks are placeholders — aider's actual security model is "use the user's local shell credentials and the LLM provider API key in the environment."
  contact:
    name: Aider Maintainers
    url: https://github.com/Aider-AI/aider/issues
  license:
    name: Apache 2.0
    url: https://github.com/Aider-AI/aider/blob/main/LICENSE.txt
  x-generated-from: documentation
  x-last-validated: '2026-05-30'
  x-source-urls:
  - https://aider.chat/docs/usage/commands.html
  - https://aider.chat/docs/usage/modes.html
  - https://aider.chat/docs/config/options.html
  - https://aider.chat/docs/llms.html
servers:
- url: cli://aider
  description: Local CLI invocation (not a network endpoint). Modeled as URI scheme `cli://aider` for catalog tooling.
- url: file:///usr/local/bin/aider
  description: Typical install path for the `aider` entrypoint.
security:
- LLMProviderKey: []
tags:
- name: Git
  description: Aider Commands That Wrap Git Operations.
paths:
  /commands/diff:
    get:
      operationId: showDiff
      summary: Aider Show Diff Since Last Message
      description: Display the diff of changes since the last message. Maps to `/diff`.
      tags:
      - Git
      responses:
        '200':
          description: Unified diff returned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DiffResult'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /commands/undo:
    post:
      operationId: undoLastCommit
      summary: Aider Undo Last Aider Commit
      description: Undo the last git commit if it was done by aider. Maps to `/undo`.
      tags:
      - Git
      responses:
        '200':
          description: Commit reverted.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CommandResult'
        '409':
          description: Last commit was not made by aider
          refusing to undo.: null
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /commands/commit:
    post:
      operationId: commitChanges
      summary: Aider Commit Changes Outside Chat
      description: Commit edits to the repo made outside the chat. Maps to `/commit`.
      tags:
      - Git
      requestBody:
        required: false
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CommitRequest'
      responses:
        '200':
          description: Commit created.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CommitResult'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /commands/git:
    post:
      operationId: runGitCommand
      summary: Aider Run Git Command
      description: Run a git command (output excluded from chat). Maps to `/git`.
      tags:
      - Git
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ShellRequest'
      responses:
        '200':
          description: Git command executed.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ShellResult'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    CommitRequest:
      type: object
      properties:
        message:
          type: string
          description: Optional commit message override. Omit to let the weak model generate one.
          example: 'chore: format imports'
    DiffResult:
      type: object
      properties:
        unified_diff:
          type: string
          description: Unified diff of all files changed since the last user message.
          example: '--- a/src/main.py

            +++ b/src/main.py

            @@ -1,3 +1,3 @@

            -print(''hi'')

            +print(''hello'')

            '
        files_changed:
          type: array
          items:
            type: string
            example: src/main.py
          example:
          - src/main.py
    ShellResult:
      type: object
      properties:
        exit_code:
          type: integer
          description: Process exit code.
          example: 0
        stdout:
          type: string
          example: 12 passed in 1.42s
        stderr:
          type: string
          example: ''
    CommandResult:
      type: object
      properties:
        ok:
          type: boolean
          example: true
        message:
          type: string
          example: Files added to chat.
    ShellRequest:
      type: object
      required:
      - command
      properties:
        command:
          type: string
          description: Shell command line to execute in the repo root.
          example: pytest -x tests/
        add_output_to_chat:
          type: boolean
          description: Whether the command's stdout/stderr is appended to chat context.
          default: true
          example: true
    ErrorResponse:
      type: object
      properties:
        code:
          type: string
          example: invalid_request
        message:
          type: string
          example: One or more file paths could not be resolved.
    CommitResult:
      type: object
      properties:
        commit_sha:
          type: string
          example: f1e2d3c4b5a6
        commit_message:
          type: string
          example: 'chore: format imports'
  securitySchemes:
    LLMProviderKey:
      type: apiKey
      in: header
      name: X-Provider-API-Key
      description: Placeholder for documentation purposes. Aider does not authenticate with an "aider API"; it reads the relevant upstream provider key (ANTHROPIC_API_KEY, OPENAI_API_KEY, etc.) from the local environment and passes it to the chosen LLM provider directly.