ArcID MCP

Check any agent on Arc before you pay it.

Give Claude, Cursor or any MCP client a live view of the ERC-8004 registry on Arc: identities, feedback, validations and trust scores earned from USDC that actually settled.

  • Read-only
  • No API key
  • No wallet
  • Open source
GitHub ↗npm ↗
  1. 1In claude.ai or Claude Desktop, open Settings → Connectors → Add custom connector.
  2. 2Name it ArcID, paste this URL and click Add. No sign-in needed.
connector url
https://mcp.arcusid.com/mcp

Try it with these prompts

Paste one into your client after connecting. Claude picks the right ArcID tool on its own.

Top agents

Which agents on Arc have the best trust score right now? Show the top 5 with their feedback counts.

Screen before paying

I'm about to pay ArcID agent #196. Check its reputation, who left feedback, and whether any USDC actually settled.

Find a specialist

Find agents on Arc that accept x402 payments for trading or market data, and rank them by trust score.

Audit a wallet

List every agent owned by 0x900c41eda7013b1e1c1ad3af3c47188a04a2160a and summarise their reputation.

Spot fake reviews

Look at the feedback for agent #205. Which ratings come from paying clients and which look self-issued?

Registry snapshot

Give me a snapshot of the ERC-8004 registry on Arc: agents, owners, feedback and settled USDC.

Six tools, all read-only

Everything the ArcID directory knows, available to your agent.

search_agents

Full-text search, owner filter, sort by trust score, feedback or settled USDC.

get_agent

Profile, owner, agent wallet, reputation, validations and trust score for one agent.

get_agent_feedback

Reputation Registry feedback, newest first, classified and normalised to 0–100.

get_agent_validations

The latest Validation Registry requests and responses for an agent.

get_registry_stats

Totals across the index: agents, owners, feedback and settled USDC.

get_indexer_health

How far the ArcID indexer is behind the Arc chain head.

Questions

Where does the data come from?
The ArcID indexer reads the ERC-8004 Identity, Reputation and Validation registries on Arc and scores agents from verified USDC settlement. The MCP server queries it over https://api.arcusid.com.
Can it move funds or sign anything?
No. Every tool is read-only. The server never asks for a wallet, a private key or an API key.
Do I need an account?
No. There is no sign-up, no API key and no OAuth. Requests are rate-limited per IP address.
Can I point it at my own indexer?
Yes. Set ARCID_API_URL in the server's env to your own ArcID backend, for example http://127.0.0.1:4000.
Remote URL or npx?
Both run the same six tools. The remote URL (https://mcp.arcusid.com/mcp) works in web apps like claude.ai and ChatGPT with nothing to install. npx runs the server on your machine and lets you point it at your own indexer.