---
title: "Get Agent Card"
method: GET
path: "/a2a/{agent_id}/.well-known/agent.json"
tags: ["[beta] A2A Agents"]
---

# Get Agent Card

`GET /a2a/{agent_id}/.well-known/agent.json`

## Request

- Base URL: `https://api.vibebrowser.app` (the document declares no server; this is the origin it was published from)
- URL: `https://api.vibebrowser.app/a2a/{agent_id}/.well-known/agent.json`
- Auth: one of:
  - API key in header `x-litellm-api-key`
  - API key in header `x-litellm-api-key`
  - API key in header `x-litellm-api-key`
  - API key in header `x-litellm-api-key`
  - API key in header `x-litellm-api-key`
  - API key in header `x-litellm-api-key`

Get the agent card for an agent (A2A discovery endpoint).

Supports both standard paths:
- /.well-known/agent-card.json
- /.well-known/agent.json

The URL in the agent card is rewritten to point to the LiteLLM proxy,
so all subsequent A2A calls go through LiteLLM for logging and cost tracking.

## Path parameters

- `agent_id` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/vibebrowser/apis/litellm-api.md) · [All operations](https://skmtc.dev/vibebrowser/apis/litellm-api/llms.txt) · [OpenAPI document](https://skmtc.dev/vibebrowser/apis/litellm-api/revisions/23d8a3c192b6?raw)