> ## Documentation Index
> Fetch the complete documentation index at: https://docs.signalmd.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# List agents

> The workspace's agents, newest first, and the shared demo agent when it is on (marked `readOnly`). A key tied to one agent sees only that agent.



## OpenAPI

````yaml /api-reference/openapi.json get /v1/agents
openapi: 3.1.0
info:
  title: Signal API
  version: 1.0.0
  description: >-
    Signal reads a voice agent's production calls and says what to fix, then
    tests whether the fix worked.

    This API exposes the same data the web app shows: agents, calls and their
    traces, signals, issues,

    versions and their comparisons, tests, and test runs.


    Authenticate with `Authorization: Bearer sig_...` (an API key from the API
    keys page). Read keys may

    call every `read` operation; write keys may also call `write` operations,
    within their monthly budget.

    Each operation's scope is in `x-signal-scope`. Errors share one envelope
    (`Error`), lists share one

    cursor scheme (`limit`, `cursor`, `hasMore`, `nextCursor`), and every
    response carries `Request-Id`

    and `RateLimit-*` headers.
servers:
  - url: https://first-signal-api.fly.dev
    description: Production
  - url: http://localhost:43124
    description: Local development
security:
  - bearerAuth: []
tags:
  - name: Account
    description: Who the token belongs to and what it may do.
  - name: Agents
    description: Voice agents connected to the workspace.
  - name: Calls
    description: Production calls, their traces and per-call signals.
  - name: Signals
    description: What Signal noticed across calls.
  - name: Issues
    description: 'Problems worth fixing: where, why, and what to change.'
  - name: Versions
    description: Agent versions and how each one did.
  - name: Comparisons
    description: Stored comparisons between two versions.
  - name: Tests
    description: Tests, test sets, personas and coverage.
  - name: Runs
    description: Test runs and the attempts inside them.
paths:
  /v1/agents:
    get:
      tags:
        - Agents
      summary: List agents
      description: >-
        The workspace's agents, newest first, and the shared demo agent when it
        is on (marked `readOnly`). A key tied to one agent sees only that agent.
      operationId: listAgents
      parameters:
        - schema:
            type: integer
            minimum: 1
            maximum: 100
            default: 25
            description: Items per page, 1 to 100.
            example: 25
          required: false
          description: Items per page, 1 to 100.
          name: limit
          in: query
        - schema:
            type: string
            minLength: 1
            description: '`nextCursor` from the previous page.'
          required: false
          description: '`nextCursor` from the previous page.'
          name: cursor
          in: query
      responses:
        '200':
          description: A page of agents.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AgentList'
        '400':
          description: 'Invalid request: a parameter or the body failed validation.'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Missing, invalid or revoked credentials.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Not permitted for this principal.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '429':
          description: Rate limited. See Retry-After.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Server error. The message is generic; quote the request id.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      x-codeSamples:
        - lang: bash
          label: curl
          source: |-
            curl "https://first-signal-api.fly.dev/v1/agents" \
              -H "Authorization: Bearer $SIGNAL_API_KEY"
components:
  schemas:
    AgentList:
      type: object
      properties:
        object:
          type: string
          enum:
            - list
        data:
          type: array
          items:
            $ref: '#/components/schemas/AgentSummary'
        hasMore:
          type: boolean
        nextCursor:
          type:
            - string
            - 'null'
          description: Pass as `cursor` for the next page; null on the last page.
      required:
        - object
        - data
        - hasMore
        - nextCursor
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            type:
              $ref: '#/components/schemas/ErrorType'
            code:
              type: string
              example: agent_not_found
              description: The specific reason; stable within v1.
            message:
              type: string
              example: Agent not found.
            param:
              type:
                - string
                - 'null'
              description: The request field at fault, for a validation error.
            requestId:
              type:
                - string
                - 'null'
              example: req_8c1f0e2b4a6d9e3f7a5c1b0d
            quota:
              type: object
              properties:
                metric:
                  type: string
                  example: test_calls
                  description: analysed_calls, agents, copilot_messages or test_calls.
                limit:
                  type: integer
                used:
                  type: integer
                plan:
                  type: string
                  example: free_org
                  description: The workspace's plan slug.
                upgradePath:
                  type: string
                  example: /billing
                  description: Where in the web app the plan is changed.
              required:
                - metric
                - limit
                - used
                - plan
                - upgradePath
              description: >-
                Present when code is quota_exceeded: the plan limit the request
                would pass.
          required:
            - type
            - code
            - message
            - param
            - requestId
      required:
        - error
      example:
        error:
          type: not_found_error
          code: agent_not_found
          message: Agent not found.
          param: null
          requestId: req_8c1f0e2b4a6d9e3f7a5c1b0d
    AgentSummary:
      type: object
      properties:
        object:
          type: string
          enum:
            - agent
        id:
          type: string
          format: uuid
          pattern: >-
            ^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$
          example: 3f1c2d4e-5a6b-4c7d-8e9f-0a1b2c3d4e5f
        name:
          type:
            - string
            - 'null'
        provider:
          type: string
          enum:
            - retell
          description: The voice platform.
        providerAgentId:
          type: string
          description: The agent's id on that platform.
        source:
          type: string
          enum:
            - retell
            - demo
          description: '"demo" for synthetic data shaped like the platform''s.'
        currentVersion:
          type:
            - integer
            - 'null'
        setupStatus:
          type: string
          enum:
            - pending
            - approved
            - rejected
        onboardingStep:
          type: string
        readOnly:
          type: boolean
          description: >-
            True only for the shared demo agent, which is readable by everyone
            and refuses every write with `demo_read_only`. A demo copied into
            the workspace (when the shared demo is off) is the workspace's own
            agent: false, and writes are accepted.
        graceDays:
          type: integer
          description: >-
            The agent's grace period in days, 1 to 90, 7 unless the workspace
            set its own: an open issue counts as resolved once the agent has
            taken calls for this long without it, and a version is judged on an
            issue only once it has taken calls for this long.
          example: 7
        createdAt:
          type: string
          format: date-time
          example: '2026-10-02T14:03:07.120Z'
        updatedAt:
          type: string
          format: date-time
          example: '2026-10-02T14:03:07.120Z'
      required:
        - object
        - id
        - name
        - provider
        - providerAgentId
        - source
        - currentVersion
        - setupStatus
        - onboardingStep
        - readOnly
        - graceDays
        - createdAt
        - updatedAt
      example:
        object: agent
        id: 6f1d2c3b-4a5e-4f60-8b7a-9c0d1e2f3a4b
        name: Northwind Dental, front desk
        provider: retell
        providerAgentId: agent_7c1e5b2f9d0a4e86b3c1
        source: retell
        currentVersion: 8
        setupStatus: approved
        onboardingStep: done
        readOnly: false
        graceDays: 7
        createdAt: '2026-09-02T09:14:00.000Z'
        updatedAt: '2026-10-02T08:30:12.000Z'
    ErrorType:
      type: string
      enum:
        - invalid_request_error
        - authentication_error
        - budget_error
        - permission_error
        - not_found_error
        - conflict_error
        - rate_limit_error
        - api_error
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: An API key (`sig_...`), or a session token from the web app.

````

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