---
title: "Get Agent Well Known"
method: GET
path: "/v1/agents/{agent_id}/a2a/well-known"
tags: ["v1", "protected"]
---

# Get Agent Well Known

`GET /v1/agents/{agent_id}/a2a/well-known`

Get current agent discovery information with proper validation and error handling.

## Path parameters

- `agent_id` string, uuid, required

## Response `200`

Successful Response

- AgentCard
  - `authentication` AgentAuthentication
    - `credentials` string, nullable
    - `schemes` string[], required
  - `capabilities` AgentCapabilities, required
    - `extendedAgentCard` boolean
    - `extensions` object[], nullable
    - `pushNotifications` boolean
    - `streaming` boolean
  - `defaultInputModes` string[]
  - `defaultOutputModes` string[]
  - `description` string, nullable
  - `documentationUrl` string, nullable
  - `name` string, required
  - `provider` AgentProvider
    - `organization` string, required
    - `url` string, nullable
  - `security` object[], nullable
  - `securitySchemes` object, nullable
  - `skills` AgentSkill[], required
    - `description` string, nullable
    - `examples` string[], nullable
    - `id` string, required
    - `inputModes` string[], nullable
    - `name` string, required
    - `outputModes` string[], nullable
    - `securityRequirements` object[], nullable
    - `tags` string[], nullable
  - `supportedInterfaces` AgentInterface[], required
    - `protocolBinding` string
    - `protocolVersion` string
    - `tenant` string, nullable
    - `url` string, required
  - `version` string

## Other responses

- `422` — Validation Error

## Changes

- **2026-07-08** `8940d7f77282` — 1 breaking, 3 warning, 3 info
  - removed the required property `url` from the response with the `200` status
  - removed the optional property `capabilities/stateTransitionHistory` from the response with the `200` status
  - removed the optional property `protocolVersion` from the response with the `200` status
  - removed the optional property `supportsAuthenticatedExtendedCard` from the response with the `200` status
  - …3 more
- **2026-06-18** `dad98bb65260` — 2 info
  - added the optional property `capabilities/extendedAgentCard` to the response with the `200` status
  - added the optional property `supportedInterfaces` to the response with the `200` status
- **2026-03-30** `e9c153221160` — 1 breaking, 2 warning, 4 info
  - removed the required property `supportedInterfaces` from the response with the `200` status
  - removed the optional property `capabilities/extendedAgentCard` from the response with the `200` status
  - removed the optional property `skills/items/securityRequirements` from the response with the `200` status
  - added the optional property `capabilities/stateTransitionHistory` to the response with the `200` status
  - …3 more

[Change history](https://skmtc.dev/agentarea/apis/agentarea-api/changes/v1/agents/:agent_id/a2a/well-known/get.md)

---

[API](https://skmtc.dev/agentarea/apis/agentarea-api.md) · [All operations](https://skmtc.dev/agentarea/apis/agentarea-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/agentarea/agentarea-api/revisions/99cf61829c55/schema)