---
title: "List A2A Messages"
method: GET
path: "/api/v1/identities/{agent_handle}/a2a/messages"
tags: ["A2A"]
---

# List A2A Messages

`GET /api/v1/identities/{agent_handle}/a2a/messages`

## Path parameters

- `agent_handle` string, required

## Query parameters

- `direction` 'inbound' | 'outbound' | 'both'
- `requester_handle` string, nullable
- `worker_handle` string, nullable
- `task_id` string, uuid, nullable
- `context_id` string, uuid, nullable
- `role` 'caller' | 'agent'
- `q` string, nullable — Full-text search over message content; results remain newest first.
- `since` string, date-time, nullable
- `cursor` string, nullable
- `limit` integer

## Response `200`

Successful Response

- A2AHistoryMessagePage
  - `items` A2AHistoryMessageResponse[], required
    - `id` string, uuid, required
    - `message_id` string, required
    - `role` 'caller' | 'agent', required
    - `parts` object[], required
    - `metadata` object, nullable, required
    - `extensions` string[], nullable, required
    - `reference_task_ids` string[], nullable, required
    - `created_at` string, date-time, required
    - `task_id` string, uuid, required
    - `context_id` string, uuid, required
    - `task_state` 'submitted' | 'working' | 'input_required' | 'completed' | 'failed' | 'canceled', required
    - `caller` A2ACallerResponse, required
      - `identity_id` string, uuid, required
      - `organization_id` string, required
      - `handle` string, nullable, required
      - `trust_tier` 'inkbox_verified'
    - `target` A2ATargetResponse, required
      - `identity_id` string, uuid, required
      - `organization_id` string, required
      - `handle` string, nullable, required
  - `next_cursor` string, nullable

## Other responses

- `422` — Validation Error
- `4XX` — Client error with Support Agent information.
- `5XX` — Server error with Support Agent information.

---

[API](https://skmtc.dev/inkbox/apis/inkbox-api.md) · [All operations](https://skmtc.dev/inkbox/apis/inkbox-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/inkbox/inkbox-api/revisions/31f357e7e6f8/schema)