ArcID MCP Server

by arcusid Your server? Claim it

answering

ArcID is answering right now. Last checked 14 min ago. 51 installs a week from npm. It exposes 6 tools. Last commit 27 Sep 2026.

Look up AI agents on Arc: ERC-8004 identity, feedback, validations and USDC-backed trust scores.

Installs per day peak 264 · avg 12 · -58% w/w

a month agotoday

Uptime history 20 days of history

20 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

149 ms

Response time

average over 24h

Installs / week

npm and PyPI

Nothing serious here today

Today is the operative word: we check ArcID every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add arcid-mcp --transport http https://mcp.arcusid.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "arcid-mcp": {
      "url": "https://mcp.arcusid.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.arcid-mcp]
url = "https://mcp.arcusid.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "arcid-mcp": {
      "url": "https://mcp.arcusid.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "arcid-mcp": {
      "url": "https://mcp.arcusid.com/mcp"
    }
  }
}

This one needs environment variables set before it will start: ARCID_API_URL (ArcID indexer API. Defaults to https://api.arcusid.com). The author declared them in the registry entry; get the values from the project itself.

Available tools 6

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

agent

get_agent

Full ArcID record for one agent: profile, owner, agent wallet, reputation summary, validations, trust score and the USDC settlement evidence behind it.

get_agent_feedback

Feedback left for an agent in the ERC-8004 Reputation Registry, newest first. Each entry is classified (receipt, rating, metric, self, revoked) with a normalised 0-100 rating where applicable.

get_agent_validations

The latest 100 validation requests and responses for an agent from the ERC-8004 Validation Registry.

agents

search_agents

Search the ArcID directory of AI agents registered on Arc (ERC-8004). Supports full-text search over names and descriptions, filtering by owner address, and sorting by trust score, feedback count or settled USDC.

indexer

get_indexer_health

How far the ArcID indexer is behind the Arc chain head. Check this when results look empty or stale.

registry

get_registry_stats

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

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.arcusid.com/mcp	streamable-http	answering	87 ms	14 min ago

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Payment-backed trust scores for AI agents on Base (ERC-8004). $0.01 per check via x402.

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ArcID — questions

Answers built from our own checks of this server.

What can ArcID do?

It exposes 6 tools, read directly from the server on our last check. Among them: get_agent, get_agent_feedback, get_agent_validations, get_indexer_health, get_registry_stats, search_agents. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is ArcID working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 149 ms. The bar chart above shows every period we have measured.

How do I connect ArcID?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does ArcID need an API key?

No. ArcID completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is ArcID?

It answers our handshake in 149 ms on average, which is faster than 75% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use ArcID?

The npm package arcid-mcp was installed 51 times in the last week. Week over week that is -58%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is ArcID open source?

Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.