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

# List agent messages

> **Plans:** `Free` · `Developer` · `Enterprise`

Lists AI SDK UI messages in a conversation (chronological). Supports cursor pagination.

**API credits:** 1 (read).



## OpenAPI

````yaml /openapi/openapi.json get /api/v1/mailboxes/{mailboxId}/agent-conversations/{conversationId}/messages
openapi: 3.1.0
info:
  title: Mermail API
  version: 1.0.0
  description: >
    Programmatic Mermail API for scripts, agents, and integrations.


    ## Authentication


    Authorize with an API key from **Settings → API Keys**:


    ```

    x-api-key: sk-proj-…

    ```


    ## Plans


    Each endpoint page shows plan badges (**Public**, **All plans**, or
    **Developer+**). Free can call the core catalog; Developer-gated paths need
    Developer or Enterprise.


    ## Try it


    Every endpoint page includes an interactive playground. Click **Try it**,
    paste your API key into the `x-api-key` field, fill path/query/body fields
    (prefilled from examples), and send a live request to
    `https://console.mermail.app`. You can also copy the generated cURL /
    JavaScript / Python snippet.


    ## Credits


    | Class | Cost |

    | --- | ---: |

    | read | 1 |

    | write | 2 |

    | email_send | 5 |

    | provision | 10 |

    | ai_light | 15 |

    | ai_heavy | 25 |
  contact:
    name: Mermail
    email: contact@mermail.app
    url: https://mermail.app
servers:
  - url: https://console.mermail.app
    description: Production
security:
  - apiKeyAuth: []
tags:
  - name: Public
    description: No authentication
  - name: Usage
    description: Credits and email quotas
  - name: Workspaces
    description: Workspaces, members, storage
  - name: Domains
    description: Custom email domains (Developer+)
  - name: Mailboxes
    description: Agent inboxes
  - name: Emails
    description: Send, list, search, folders
  - name: AI agent
    description: Mailbox agent chat
  - name: Task triage
    description: Task triagers (all plans)
  - name: RAG
    description: Knowledge documents and recall
  - name: Integrations
    description: Composio, Telegram, push
  - name: Affiliate
    description: Affiliate program
paths:
  /api/v1/mailboxes/{mailboxId}/agent-conversations/{conversationId}/messages:
    get:
      tags:
        - AI agent
      summary: List agent messages
      description: >-
        **Plans:** `Free` · `Developer` · `Enterprise`


        Lists AI SDK UI messages in a conversation (chronological). Supports
        cursor pagination.


        **API credits:** 1 (read).
      parameters:
        - name: mailboxId
          in: path
          required: true
          description: Mailbox public_id (UUID), hosted alias id, or current email
          schema:
            type: string
          example: aaaaaaaa-bbbb-4ccc-8ddd-eeeeeeeeeeee
        - name: conversationId
          in: path
          required: true
          description: Conversation id
          schema:
            type: string
          example: conv_01
        - name: limit
          in: query
          required: false
          description: Page size (1–50, default 50)
          schema:
            type: integer
            minimum: 1
            maximum: 50
            default: 50
          example: 50
        - name: cursor
          in: query
          required: false
          description: Opaque cursor from a previous `nextCursor` value
          schema:
            type: string
          example: msg_row_id
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
                additionalProperties: true
              example:
                messages:
                  - id: m1
                    role: user
                    parts:
                      - type: text
                        text: Summarize inbox
                  - id: m2
                    role: assistant
                    parts:
                      - type: text
                        text: You have 3 unread…
                nextCursor: null
        '401':
          description: Missing, invalid, expired, or revoked API key / token
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                error: Unauthorized
        '402':
          description: API credits exhausted for this workspace period
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                error: Invalid request
        '403':
          description: Forbidden — plan gate, wrong workspace, or missing role
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                error: Forbidden
        '429':
          description: Rate limit exceeded (workspace RPM or email send limits)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                error: Too many requests
          headers:
            Retry-After:
              schema:
                type: integer
              description: Seconds until the rate limit window resets
      security:
        - apiKeyAuth: []
components:
  schemas:
    Error:
      type: object
      required:
        - error
      properties:
        error:
          type: string
          example: Unauthorized
        code:
          type: string
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: >-
        API key (`sk-proj-…`) from Settings → API Keys. Required for sold API
        calls outside the Mermail console.

````