Composio Tool Router Session

arazzo: 1.0.1
info:
  title: Composio Tool Router Session
  summary: Open a tool router session, search for a tool by use case, and execute it.
  description: >-
    The agentic tool-router pattern where an LLM session dynamically discovers
    and runs tools. The workflow creates a tool router session for a user with a
    set of enabled toolkits, searches the session for tools that match a natural
    language use case, and executes the best-matching tool within the same
    session. Every step spells out its request inline so the flow can be read and
    executed without opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: toolRouterApi
  url: ../openapi/composio-tool-router-api-openapi.yml
  type: openapi
workflows:
- workflowId: tool-router-session
  summary: Create a tool router session, search it by use case, and execute a tool.
  description: >-
    Opens a tool router session scoped to a user and a set of toolkits, searches
    the session for tools matching a use case, branches on whether a match was
    found, and executes the chosen tool within the session.
  inputs:
    type: object
    required:
    - apiKey
    - userId
    - enabledToolkits
    - useCase
    - toolSlug
    properties:
      apiKey:
        type: string
        description: Composio project API key sent in the x-api-key header.
      userId:
        type: string
        description: The end-user identifier the session is created for.
      enabledToolkits:
        type: array
        description: The list of toolkit slugs to enable in the session.
        items:
          type: string
      useCase:
        type: string
        description: A natural-language description of what the agent wants to accomplish.
      toolSlug:
        type: string
        description: The slug of the tool to execute once a match is confirmed.
      arguments:
        type: object
        description: The argument map passed to the executed tool.
  steps:
  - stepId: createSession
    description: >-
      Create a tool router session for the user with the requested toolkits
      enabled, returning a session id and MCP endpoint.
    operationId: postToolRouterSession
    parameters:
    - name: x-api-key
      in: header
      value: $inputs.apiKey
    requestBody:
      contentType: application/json
      payload:
        user_id: $inputs.userId
        toolkits:
          enable: $inputs.enabledToolkits
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      sessionId: $response.body#/session_id
      mcpUrl: $response.body#/mcp/url
  - stepId: searchTools
    description: >-
      Search the session for tools matching the natural-language use case so the
      agent can confirm the desired tool is available.
    operationId: postToolRouterSessionBySessionIdSearch
    parameters:
    - name: x-api-key
      in: header
      value: $inputs.apiKey
    - name: session_id
      in: path
      value: $steps.createSession.outputs.sessionId
    requestBody:
      contentType: application/json
      payload:
        queries:
        - use_case: $inputs.useCase
    successCriteria:
    - condition: $statusCode == 200
    - condition: $response.body#/success == true
    outputs:
      results: $response.body#/results
      nextStepsGuidance: $response.body#/next_steps_guidance
    onSuccess:
    - name: toolsFound
      type: goto
      stepId: executeTool
      criteria:
      - context: $response.body
        condition: $.results.length > 0
        type: jsonpath
  - stepId: executeTool
    description: >-
      Execute the chosen tool within the session using the supplied arguments.
    operationId: postToolRouterSessionBySessionIdExecute
    parameters:
    - name: x-api-key
      in: header
      value: $inputs.apiKey
    - name: session_id
      in: path
      value: $steps.createSession.outputs.sessionId
    requestBody:
      contentType: application/json
      payload:
        tool_slug: $inputs.toolSlug
        arguments: $inputs.arguments
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      data: $response.body#/data
      logId: $response.body#/log_id
  outputs:
    sessionId: $steps.createSession.outputs.sessionId
    mcpUrl: $steps.createSession.outputs.mcpUrl
    data: $steps.executeTool.outputs.data
    logId: $steps.executeTool.outputs.logId