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Policyvault MCP Server

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local only

Policyvault runs on your own machine — the client starts it, so there is no endpoint to ping. 97 installs a week from npm. Last commit 15 Sep 2026.

Non-custodial Kaspa policy enforcement for AI agents; signers retain custody.

Installs per day peak 241 · avg 9
a month agotoday
97
Installs / week
npm · policyvault-mcp
1
Stars
0 open issues
15 Sep 2026
Last commit
0 releases in 90 days
Apache-2.0
License
JavaScript

What the code does

We read the source, 21 h ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

File ships in the package but is absent from the source [пакет] src/config.js:1, [пакет] src/envelope.js:1, [пакет] src/http.js:1 и ещё 4
этот файл ставится пользователю, но в репозитории его нет
    this.proc = spawn(process.execPath, [MCP_SERVER], {
    ? (name) => require(path.join(__dirname, "..", "..", "..", "sdk", "src", name))
vm.compileFunction(adapted, ["module", "exports", "require", "__dirname", "probeTxId", "probeCompile", "probeP2sh"])(mod, mod.exports, require, __dirname, fixture.request.txId, compile, scripts.p2shSpkHexOf);
Builds a database query by concatenation web/index.html:332
      .pv-onb-link-packet { position: absolute; left: -8px; top: 0; width: 18px; height: 18px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--onb-accent-soft); transform: translateY(22px); animation: pv-onb-drop 1s ease-in-out calc(0.9s + var(--onb-seq) * 1.2s) both; }
Runs an external command tools/protected-pg-backup.py:107
        result = subprocess.run(dump_command, stdout=source, stderr=subprocess.PIPE)
  "6c76009c63750111790111790111790111790111790111790111790111790111790111790111790111790111790111790111790111790111790111790137790137790137790137790137790137790137790137790137790137790137790137790137790137790137790137790137790137790137790137797800a2697854a16976827c755196020c039c6…
Sends data to a third-party sink sdk/src/genesis-recovery.js:155
    completeAcceptanceWindow: true, initialAnchorReorg: false, requestBinding: negativeEvidenceBinding(request),

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

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

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 policyvault -- npx -y policyvault-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "policyvault": {
      "args": [
        "-y",
        "policyvault-mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.policyvault]
command = "npx"
args = ["-y", "policyvault-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "policyvault": {
      "args": [
        "-y",
        "policyvault-mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "policyvault": {
      "args": [
        "-y",
        "policyvault-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: POLICYVAULT_MCP_SERVER_URL (Bare origin of the PolicyVault server (e.g. https://app.policy-vault.org, or your self-hosted origin). Refused if it embeds credentials or a path.), POLICYVAULT_MCP_TOKEN (Machine-identity bearer credential (pvmk_...), minted by the vault operator in the PolicyVault app with exactly the scopes the agent should hold. Never logged; deleted from the process environment after being read.), POLICYVAULT_MCP_SCOPES (Optional comma-separated scope list to narrow which tools are advertised (display-side only; enforcement is always server-side).). The author declared them in the registry entry; get the values from the project itself.

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Policyvault — questions

Answers built from our own checks of this server.

Why is there no uptime for Policyvault?
Policyvault 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 policyvault-mcp was installed 97 times last week.
How do I connect Policyvault?
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 policyvault-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Policyvault?
The npm package policyvault-mcp was installed 97 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Policyvault open source?
Yes — it is published under the Apache-2.0 licence, written in JavaScript and 1 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.