ArcID

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

Should I use this

Quality & Safety

A
Description quality
97%
Schema completeness
75%
Naming quality
100%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~934Tokens (tool definitions)
~910 BTypical response size
Moderate attention impact (0.73% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "arcid-mcp": {
      "command": "npx",
      "args": [
        "arcid-mcp"
      ]
    }
  }
}

Runnable packages

npmarcid-mcp0.2.0stdio

Remote endpoints

https://mcp.arcusid.com/mcpstreamable-http

What it can do

Tool inventory

Tools (6)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢search_agents(query, owner, readable_only, sort, page, ...)

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.

Input Schema

{
  "type": "object",
  "properties": {
    "query": {
      "description": "Full-text search (prefix match on words)",
      "type": "string",
      "maxLength": 120
    },
    "owner": {
      "description": "Owner wallet address",
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$"
    },
    "readable_only": {
      "default": true,
      "description": "Only agents with a readable profile (name, description). Default true; set false to include unnamed agents",
      "type": "boolean"
    },
    "sort": {
      "description": "Default: relevance when a query is given, otherwise newest",
      "type": "string",
      "enum": [
        "newest",
        "score",
        "feedback",
        "settled",
        "relevance"
      ]
    },
    "page": {
      "description": "Page number, starting at 1",
      "type": "integer",
      "minimum": 1,
      "maximum": 10000
    },
    "limit": {
      "description": "Results per page, 1-100 (default 24)",
      "type": "integer",
      "minimum": 1,
      "maximum": 100
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢get_agent(agent_id)

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

Input Schema

{
  "type": "object",
  "properties": {
    "agent_id": {
      "type": "integer",
      "minimum": 0,
      "maximum": 999999999999999,
      "description": "ERC-8004 agent ID (token ID in the Identity Registry)"
    }
  },
  "required": [
    "agent_id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢get_agent_feedback(agent_id, page, limit)

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.

Input Schema

{
  "type": "object",
  "properties": {
    "agent_id": {
      "type": "integer",
      "minimum": 0,
      "maximum": 999999999999999,
      "description": "ERC-8004 agent ID (token ID in the Identity Registry)"
    },
    "page": {
      "description": "Page number, starting at 1",
      "type": "integer",
      "minimum": 1,
      "maximum": 10000
    },
    "limit": {
      "description": "Results per page, 1-100 (default 50)",
      "type": "integer",
      "minimum": 1,
      "maximum": 100
    }
  },
  "required": [
    "agent_id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢get_agent_validations(agent_id)

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

Input Schema

{
  "type": "object",
  "properties": {
    "agent_id": {
      "type": "integer",
      "minimum": 0,
      "maximum": 999999999999999,
      "description": "ERC-8004 agent ID (token ID in the Identity Registry)"
    }
  },
  "required": [
    "agent_id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢get_registry_stats

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

Input Schema

{
  "type": "object",
  "properties": {}
}
🟢get_indexer_health

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

Input Schema

{
  "type": "object",
  "properties": {}
}

Community

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Evidence

Recent observations

verifiedversion not recorded6 tools