MCP server

KeyHalve - verify sealed documents Official

com.keyhalve/verify

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Working at last checkVerified publisher: keyhalve.comAbout 475 tokens per request once connected3 tools

https://mcp.keyhalve.com/mcp

At a glance

Type: MCP server
Publisher: keyhalve.com (verified by the MCP Registry)
Status: Working at last check
Tools: 3
Token cost: About 475 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

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

Gemini CLI

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

Cursor

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

VS Code

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

Antigravity

agy mcp add verify https://mcp.keyhalve.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"verify","server_url":"https://mcp.keyhalve.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"verify","server_url":"https://mcp.keyhalve.com/mcp"}

keyhalve_explain ~131 tokens
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 ~125 tokens
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 ~219 tokens
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 r

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