AnchorRegistry: MCP server (AI & agents) in 2026

On-chain provenance lookup for AnchorRegistry. Resolve AR-IDs, hashes, and full trees. Authless.

Verified working on 2026-10-27 Rank 111 of 192 in AI & agents. Source: MCP Registry record, checked 2026-10-27.

Key facts

Type	MCP server, remote (streamable HTTP)
Category	AI & agents
Endpoint	https://mcp.anchorregistry.ai/mcp
Registry name	io.github.AnchorRegistry/ar-mcp
Version (registry)	0.1.0
Published in registry	2026-04-30
Registry record updated	2026-04-30
Repository	https://github.com/anchorregistry/ar-mcp
Website	https://anchorregistry.com
Authentication	None needed for initialize and tools/list (checked anonymously)
Latest check	Up on 2026-10-27, 596 ms to initialize
Tools listed	3
Checks passed	1 of 1 daily checks
Last verified working	2026-10-27
Source	https://registry.modelcontextprotocol.io/v0/servers/io.github.AnchorRegistry%2Far-mcp/versions/latest (pulled 2026-10-27)

Tools (3)

ar_verify_arid, ar_verify_by_hash, ar_resolve_tree

Verification history

One probe a day: initialize, then tools/list, nothing else. Last 1 checks: 10-27 up

Install

Claude Code

claude mcp add --transport http ar-mcp https://mcp.anchorregistry.ai/mcp

Claude (claude.ai, Desktop)

Settings > Connectors > Add custom connector. Name: AnchorRegistry. URL: https://mcp.anchorregistry.ai/mcp

Cursor

{
  "mcpServers": {
    "ar-mcp": {
      "url": "https://mcp.anchorregistry.ai/mcp"
    }
  }
}

Save as ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).

ChatGPT

Settings > Connectors > Advanced > Developer mode, then Create. Name: AnchorRegistry. MCP server URL: https://mcp.anchorregistry.ai/mcp. Authentication: No authentication.

Custom connectors need a plan with Developer mode; menu names change between releases.

Hermes Agent

mcp_servers:
  ar-mcp:
    url: "https://mcp.anchorregistry.ai/mcp"

Add to ~/.hermes/config.yaml, then run /reload-mcp.

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