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

# Agent card

> A2A discovery metadata — machine-readable agent identity for other agents to call Graph Advocate.

## Well-known endpoint

```
GET /.well-known/agent-card.json
```

Returns the A2A protocol agent card: skills, endpoints, authentication, and capabilities — so other agents can discover and call Graph Advocate without a human in the loop.

```bash theme={null}
curl https://graphadvocate.com/.well-known/agent-card.json
```

## ERC-8004

Graph Advocate is registered on the ERC-8004 identity registry:

| Field | Value |
| - | - |
| Agent ID | `#734` |
| Chain | Arbitrum |
| ENS | `graphadvocate.eth` |
| A2A endpoint | `https://graphadvocate.com/` |
| MCP endpoint | `https://graphadvocate.com/mcp` |
| x402 support | Yes |
| Registry lookup | [a2aregistry.org/agent/afd9b3bb-413c-41cf-9874-6361ea309e32](https://a2aregistry.org) |

## Discoverable on

Graph Advocate is indexed across the agent-economy discovery layer:

| Registry | Link |
| - | - |
| **Agentic Market** (Coinbase's browsable UI) | [agentic.market/services/graphadvocate-com](https://agentic.market/services/graphadvocate-com) |
| **CDP x402 Bazaar** (merchant endpoint) | [discovery/merchant?payTo=...](https://api.cdp.coinbase.com/platform/v2/x402/discovery/merchant?payTo=0x0FF5A6ecef783BBA35463ec2F8403B9B5e9e7C86) |
| **CDP x402 Bazaar** (semantic search) | [discovery/search?query=graph+advocate](https://api.cdp.coinbase.com/platform/v2/x402/discovery/search?query=graph+advocate) |
| x402scan | [www.x402scan.com](https://www.x402scan.com) |
| 8004scan (Base) | [agents/base/41034](https://www.8004scan.io/agents/base/41034) |
| 8004scan (Arbitrum) | [agents/arbitrum/734](https://www.8004scan.io/agents/arbitrum/734) |
| Ampersend | [agent/8453:41034](https://app.ampersend.ai/discover/agent/8453:41034) |
| Agentverse | [agentverse.ai](https://agentverse.ai) |
| ClawHub | [paulieb14/graph-advocate](https://clawhub.ai/paulieb14/graph-advocate) |

CDP Bazaar listing was triggered by the first successful settle through the CDP facilitator — there's no separate registration step. See the [x402 Bazaar docs](https://docs.cdp.coinbase.com/x402/bazaar) for how indexing works.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.