AnchorRegistry

@Ian Moore (DeFiMind Corp)

Visit Server

2 days ago

AnchorRegistry is the open provenance layer for the agentic economy. Every digital artifact — code, research, data, models, media, agents, transactions — can be anchored to Base L2 with a permanent, machine-resolvable identifier (an AR-ID). When an AI assistant encounters an SPDX-Anchor or DAPX-Anchor tag in a README, paper, model card, or website, this MCP server lets it resolve the artifact's full provenance record in one call: who anchored it, when, what type it is, manifest hash, and whether the tree has been sealed, retracted, voided, or affirmed. This is the verify-only edition (v0.1). Three read-only, authless tools wrap the public AnchorRegistry verify endpoints. Free, no API key, no account, no rate limit beyond defaults. Future versions will add registration, balance, and seal tools once the MCP credential pattern stabilizes.

Overview Tools Comments

Overview

What it does

AnchorRegistry's MCP server lets any AI assistant resolve provenance records for artifacts anchored on Base L2. When you see an SPDX-Anchor: anchorregistry.ai/AR-2026-XXXXXXX tag in a README, research paper, model card, or website, this server resolves it in one tool call.

Tools

`ar_verify_arid`

Resolve an AR-ID to its full provenance record — title, author, type, manifest hash, registrant, transaction hash, block number, anchored timestamp, and seal/retraction status.

Input: ar_id (e.g. AR-2026-qnPOJ1z)

`ar_verify_by_hash`

Resolve an artifact by its SHA-256 manifest hash. Use when you have the file but no AR-ID.

Input: manifest_hash (64-char hex, no 0x prefix)

`ar_resolve_tree`

Resolve a full provenance tree — root anchor plus all descendants with their relationships, types, and timestamps.

Input: ar_id (any anchor in the tree)

Install

Claude Desktop

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

Claude Code

Cursor / VS Code

{
  "mcpServers": {
    "anchorregistry": {
      "type": "http",
      "url": "https://mcp.anchorregistry.ai/mcp"
    }
  }
}

Try it

"Look at https://github.com/AnchorRegistry/ar-contracts-v1 — find any AR-ID in the README and resolve it."

Claude fetches the repo, finds the SPDX-Anchor tag, calls ar_verify_arid, and returns the full provenance record.

Behind the scenes

Smart contract on Base L2: 0x3eC509393425BCAa48224FB90C710e100ADA1D2A
Peer-reviewed game-theoretic security model: arXiv:2604.03434
Source: github.com/AnchorRegistry/ar-mcp (MIT)
Contract source: github.com/AnchorRegistry/ar-contracts-v1 (BUSL-1.1)
API: api.anchorregistry.ai/openapi.json

Free, no API key, no account.

Try in Playground

Server Config

{
  "mcpServers": {
    "anchorregistry": {
      "type": "http",
      "url": "https://mcp.anchorregistry.ai/mcp"
    }
  }
}

Build with ShipAny.