MCP Server Attestation

by studiomeyer Your server? Claim it

local only

MCP Server Attestation runs on your own machine — the client starts it, so there is no endpoint to ping. 38 installs a week from npm. Last commit 13 Sep 2026.

Ed25519-signed MCP tool manifests + spawn attestation. Layer-2 supply-chain hardening.

Installs per day peak 21 · avg 7 · -6% w/w

a month agotoday

Installs / week

npm · mcp-attest-demo

Stars

0 open issues

13 Sep 2026

Last commit

0 releases in 90 days

MIT

License

TypeScript

What the code does

We read the source, 19 h ago · rules 3dff92dd89df

A tool parameter reaches a dangerous call

A value the model can set ends up inside a file or shell call. That is not a flaw by itself — for a terminal server it is the job — but it is where things go wrong when it is not.

A tool parameter reaches a file or shell call attest_sign_manifest.manifestPath → packages/demo-server/src/tools/index.ts:181, attest_verify_manifest.manifestPath → packages/demo-server/src/tools/index.ts:57, attest_verify_manifest.manifestPath → packages/demo-server/src/tools/index.ts:177 и ещё 2

    await fs.writeFile(resolve(input.outputPath), JSON.stringify(signed, null, 2) + "\n");

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

A tool parameter here reaches a dangerous call

That is not a flaw by itself — but it is where things go wrong when it is not the job. We re-read this code on every release. Watch it and you hear from us the day another one appears.

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.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add server-attestation -- npx -y mcp-attest-demo

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

{
  "mcpServers": {
    "server-attestation": {
      "args": [
        "-y",
        "mcp-attest-demo"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.server-attestation]
command = "npx"
args = ["-y", "mcp-attest-demo"]

.cursor/mcp.json

{
  "mcpServers": {
    "server-attestation": {
      "args": [
        "-y",
        "mcp-attest-demo"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "server-attestation": {
      "args": [
        "-y",
        "mcp-attest-demo"
      ],
      "command": "npx"
    }
  }
}

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MCP Server Attestation — questions

Answers built from our own checks of this server.

Why is there no uptime for MCP Server Attestation?

MCP Server Attestation 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 mcp-attest-demo was installed 38 times last week.

How do I connect MCP Server Attestation?

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 mcp-attest-demo straight from npm; nothing to host, nothing to sign up for.

How many people use MCP Server Attestation?

The npm package mcp-attest-demo was installed 38 times in the last week. Week over week that is -6%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is MCP Server Attestation 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.