KeyHalve - verify sealed documents MCP Server

by keyhalve Your server? Claim it

answering

KeyHalve - verify sealed documents is answering right now. Last checked 10 min ago. 49 installs a week from npm. It exposes 3 tools. Last commit 5 Aug 2026.

Free, no-account verification of KeyHalve-sealed documents. Read-only; never receives keys.

Installs per day peak 13 · avg 4 · +250% w/w

a month agotoday

Uptime history 90 days of history · worst day 91%

90 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

87 ms

Response time

average over 24h

Installs / week

npm and PyPI

Nothing serious here today

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

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add verify --transport http https://mcp.keyhalve.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://mcp.keyhalve.com/mcp

~/.codex/config.toml

[mcp_servers.verify]
url = "https://mcp.keyhalve.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "verify": {
      "url": "https://mcp.keyhalve.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "verify": {
      "type": "http",
      "url": "https://mcp.keyhalve.com/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

keyhalve

keyhalve_explain

Plain-language explanation of what a KeyHalve verification verdict means and why it can be trusted (blind rail, three-share custody, commitments, revocation). Optionally focused on one topic.

keyhalve_status

Live status of a KeyHalve-sealed document by id: active, revoked (with reason/time), or outside its validity window. Lighter than keyhalve_verify — status only, no integrity or rail checks. Use for "is this still good right now?"

keyhalve_verify

Verify a KeyHalve-sealed document. Accepts a verify URL, the raw text of a KeyHalve QR code, or a document id (vp_…, kh_…, cb_…). Returns the cryptographic verdict: whether the seal exists, its live status (active/revoked/expired), ciphertext integrity against the issuance commitment, the KeyHalve rail's independent attestation, the validity window, and the issuer's trust context. This tool NEVER decrypts sealed contents — any decryption key in the URL fragment is discarded unread; contents are only readable by opening the verify URL in a browser.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.keyhalve.com/mcp	streamable-http	answering	47 ms	10 min ago

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KeyHalve - verify sealed documents — questions

Answers built from our own checks of this server.

What can KeyHalve - verify sealed documents do?

It exposes 3 tools, read directly from the server on our last check. Among them: keyhalve_explain, keyhalve_status, keyhalve_verify. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is KeyHalve - verify sealed documents working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 87 ms. The bar chart above shows every period we have measured.

How do I connect KeyHalve - verify sealed documents?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does KeyHalve - verify sealed documents need an API key?

No. KeyHalve - verify sealed documents completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is KeyHalve - verify sealed documents?

It answers our handshake in 87 ms on average, which is faster than 94% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use KeyHalve - verify sealed documents?

The npm package @keyhalve/verify-mcp was installed 49 times in the last week. Week over week that is +250%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is KeyHalve - verify sealed documents open source?

The code is open source: it is published under the MIT licence, written in TypeScript, 0 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at mcp.keyhalve.com, which runs on its operator's own terms.