mcpbeat Sign in

x402 Notary MCP Server

local only

x402 Notary MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 75 installs a week from npm. Last commit 1 Sep 2026.

Cryptographic receipts for AI outputs on Base or Solana via x402.

Installs per day peak 177 · avg 19 · +235% w/w
a month agotoday
75
Installs / week
npm · @forgemeshlabs/x402-notary-mcp
0
Stars
0 open issues
1 Sep 2026
Last commit
0 releases in 90 days
MIT
License
JavaScript

Nothing serious here today

Today is the operative word: we check x402 Notary MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add x402-notary-mcp -- npx -y @forgemeshlabs/x402-notary-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "x402-notary-mcp": {
      "args": [
        "-y",
        "@forgemeshlabs/x402-notary-mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.x402-notary-mcp]
command = "npx"
args = ["-y", "@forgemeshlabs/x402-notary-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "x402-notary-mcp": {
      "args": [
        "-y",
        "@forgemeshlabs/x402-notary-mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "x402-notary-mcp": {
      "args": [
        "-y",
        "@forgemeshlabs/x402-notary-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: WALLET_PRIVATE_KEY (Dedicated low-balance Base wallet private key for x402 USDC micropayments. Optional — verification tools work without it. Never use your primary wallet.), NOTARY_RAIL (Payment rail: base or solana. Defaults to base, or solana when NOTARY_BASE_URL contains notary-solana.), NOTARY_BASE_URL (Notary API origin. Use https://notary.forgemesh.io for Base or https://notary-solana.forgemesh.io for Solana.), SOLANA_PRIVATE_KEY (Dedicated low-balance Solana keypair for x402 USDC micropayments. Supports JSON byte array, base58, base64, or hex. Optional — verification tools work without it.). The author declared them in the registry entry; get the values from the project itself.

Alternatives to x402 Notary MCP

same job, measured the same way
KHOTEM — Cryptographic Witness
by khotem

Paid cryptographic witness for agents: seal, attest, receipts. x402 USDC/Base.

18 tools answering
Boo X402 MCP
by lucle87

Pay-per-call crypto data for AI agents. USDC on Base via x402. No API key.

30 installs/wk local only
Agent Data Pro
by orionsmithers

Research articles and live crypto prices for AI agents via x402 on Base.

4 tools answering
Kr Crypto Intelligence
by bakyang2

Korean crypto + news (kpop/semi), 17 tools, signed receipts. x402 Base+Polygon+Solana.

18 tools answering
AOTrust Notarization & Evidence Server
by gitserge-crypto

Cryptographic proof of existence for AI agents. Base x402, NEAR anchored. Free tier.

414 installs/wk local only
Clawswap
by wartech9

Cross-chain swaps between Solana and Base for AI agents paid for via via x402 micropayments.

44 installs/wk local only
AgnicPay
by agnicpay-prog

X402 payment MCP for AI agents. Auto-pay 300+ APIs with USDC on Base and Solana.

answering
Spraay X402 MCP
by plagtech

MCP server for Spraay x402 Gateway. 60 tools for crypto payments, DeFi, and AI on Base.

32 installs/wk local only

x402 Notary MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for x402 Notary MCP?
x402 Notary MCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @forgemeshlabs/x402-notary-mcp was installed 75 times last week.
How do I connect x402 Notary MCP?
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 runs locally, so the command pulls @forgemeshlabs/x402-notary-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use x402 Notary MCP?
The npm package @forgemeshlabs/x402-notary-mcp was installed 75 times in the last week. Week over week that is +235%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is x402 Notary MCP open source?
Yes — it is published under the MIT licence, written in JavaScript 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.