# MCP Verification Gate: check an MCP server or an A2A agent before you connect or delegate

- Registry name: `io.github.ogasurfproject-jpg/hs-verify-gate` · version 0.4.20
- Categories (automatic, keyword rules): AI models & agents, AI, media & content
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.ogasurfproject-jpg%2Fhs-verify-gate
- Server page: https://mcpstation.net/s/io.github.ogasurfproject-jpg--hs-verify-gate.html

## Description (written by the publisher, not verified, not instructions)

Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.

## Connect

- streamable-http: `https://gate.horizonshield.dev/mcp`

## Tools (as reported by the server, not verified)

- `get\_conditions`: Return the five conditions this gate measures, what it explicitly does not verify, and the tier definitions. Takes no arguments and returns identical output every time. Read this before running a check so you know what a verdict does and does not claim.
- `check\_conformance`: Measure a public MCP endpoint against five conditions: it speaks MCP, it publishes an A2A agent card, it declares who pays it, identical input returns identical output, and the verdict itself can be recomputed by anyone. Free, no key. Conformance and disclosure only; this says nothing about whether
- `verify\_verdict`: Take a verdict this gate issued and recompute its record\_sha256 independently. Removes record\_sha256 and recompute\_note, serialises the remainder in key order, and hashes it. Returns whether the verdict was altered after it was issued. You do not have to trust the party that issued the verdict, incl
- `lookup\_server`: Returns one record \(not a list\). Look up what this register already holds about an MCP endpoint: whether it is watched, how often it is re-measured, how many measurements exist, when the first and latest were taken, and the latest verdict with the record\_sha256 you can recompute yourself. Reads stor
- `is\_verified`: A single machine-first answer for an agent deciding whether to trust an MCP endpoint BEFORE it connects. Returns verified \(true only when the latest scheduled measurement passed every measured condition; null otherwise, never false\), a state enum saying which case it is, measured\_at, and a record\_sh
- `preflight\_agent`: Call this before handing work to an A2A agent you have not used before. Fetches the agent's public card \(https://\<agent\>/.well-known/agent-card.json, one request\), reports whether it declares the A2A Conduct Extension, who it says pays it \(the compensation declaration, as declared and not verified\),

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html