# KeyHalve - verify sealed documents

> KeyHalve - verify sealed documents, an MCP server by keyhalve.com, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Free, no-account verification of KeyHalve-sealed documents. Read-only; never receives keys.

- Canonical: https://www.anchorterminal.com/tools/keyhalve-verify
- Markdown: https://www.anchorterminal.com/tools/keyhalve-verify.md (~700 tokens)
- Slim: https://www.anchorterminal.com/tools/keyhalve-verify.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/tools/keyhalve-verify.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-05

# KeyHalve - verify sealed documents

> Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: MCP server, by keyhalve.com (https://keyhalve.com)
- Listed because: It's published in the registry under keyhalve.com, a namespace the registry only gives to whoever proves they control that domain.
- What the official MCP registry says: Free, no-account verification of KeyHalve-sealed documents. Read-only; never receives keys.

## Facts

- MCP registry: `com.keyhalve/verify` 1.0.1
- Endpoint: https://mcp.keyhalve.com/mcp (streamable HTTP)
- Package: npm `@keyhalve/verify-mcp` (stdio)
- Source: https://github.com/keyhalve/keyhalve-mcp
- npm downloads a week: 37
- GitHub stars: 0
- Registry entry updated: 2026-08-03

## Tools

- Tools it lists (3, about 489 tokens of context, `tools/list` without credentials, checked 2026-10-04 22:23 UTC):
  - `keyhalve_verify` (read-only): 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…
  - `keyhalve_status` (read-only): Live status of a KeyHalve-sealed document by id: active, revoked (with reason/time), or outside its validity window. Lighter than keyhalve_verify — status…
  - `keyhalve_explain` (read-only): Plain-language explanation of what a KeyHalve verification verdict means and why it can be trusted (blind rail, three-share custody, commitments, revocation).…
- How its tools read to an agent (0 errors, 0 warnings, 1 note, about 489 tokens; rules at https://www.anchorterminal.com/check.md; not part of the score):
  - note TC24 server: 3 of 3 tools have no outputSchema

- JSON: https://www.anchorterminal.com/api/v1/tools/keyhalve-verify.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming