Not reviewed
No score, grade or rank. This listing is facts from the official MCP registry and our own checks, and it stays out of the rankings until the panel reviews it.
Issue signed receipts for AI agent actions; verify any receipt offline - free, no account.
Facts
- MCP registry
com.pcrzero/mcp· 0.2.0- Endpoint
https://mcp.pcrzero.com/mcp- Packages
npm@scytalex-llc/pcrzero-mcp stdionpm@scytalex-llc/pcrzero-mcp streamable-http- Website
- pcrzero.com/mcp
- npm / week
- 46
- Registry entry
- updated 13 Aug 2026
From the official MCP registry, the package registries and our own checks. JSON · Markdown
Why it's listed
- It's published in the registry under pcrzero.com, a namespace the registry only gives to whoever proves they control that domain.
Being indexed says nothing about quality, and nobody can pay for it. Is this yours? Ask for a review.
Tools it lists 3 · about 758 tokens of context · checked 13 minutes ago
| Tool | What it does | Hint |
|---|---|---|
issue_receipt | Adjudicates an attestation document against a policy and returns the verdict together with a signed receipt pair — the durable, independently checkable proof that this decision was made, by these keys, over this… | |
verify_receipt | Checks a PCRZERO receipt pair against the signing keyset: whether the signature holds, and whether the receipt says what it appears to say. **Free, with no API key and no account, and it stays free.** Offline by default… | |
get_keyset | Returns the current PCRZERO signing keyset — key ids, public halves, and each key's status. Public and unauthenticated: no API key, no cost, no account. This is the same document an outside party fetches to check a… |
What https://mcp.pcrzero.com/mcp answered to tools/list, asked without credentials over MCP 2025-11-25. last answer error: initialize: HTTP 404; tools as last listed. The token figure is the size of the list as sent, divided by four; a model sees about that much before it calls anything. Full definitions, input schemas included, are in the listing's JSON under mcpTools.
How its tools read to an agent 0 errors · 5 warnings · 1 note
- warnTC11issue_receipt1 parameter without a description: nonce
- warnTC11verify_receipt1 parameter without a description: conformance
- warnTC16get_keysetno readOnlyHint or destructiveHint
- warnTC16issue_receiptno readOnlyHint or destructiveHint
- warnTC16verify_receiptno readOnlyHint or destructiveHint
- noteTC24server3 of 3 tools have no outputSchema
The checks from /check and anchor check, run each day on the list above: about 758 tokens of definitions. Not part of the score yet. Check your own server.