MCP server

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

io.github.ogasurfproject-jpg/hs-verify-gate

Checked 28 Oct 2026, 09:03 UTC · Connected to it and listed its tools

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

Working at last checkAbout 1,327 tokens per request once connected6 tools

Website Source

https://gate.horizonshield.dev/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 6
Token cost: About 1,327 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 28 Oct 2026, 09:03 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

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 hs-verify-gate https://gate.horizonshield.dev/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.hs-verify-gate]
url = "https://gate.horizonshield.dev/mcp"

Gemini CLI

{"mcpServers":{"hs-verify-gate":{"httpUrl":"https://gate.horizonshield.dev/mcp"}}}

Cursor

{"mcpServers":{"hs-verify-gate":{"url":"https://gate.horizonshield.dev/mcp"}}}

VS Code

{"servers":{"hs-verify-gate":{"type":"http","url":"https://gate.horizonshield.dev/mcp"}}}

Antigravity

agy mcp add hs-verify-gate https://gate.horizonshield.dev/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":"hs-verify-gate","server_url":"https://gate.horizonshield.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"hs-verify-gate","server_url":"https://gate.horizonshield.dev/mcp"}

Tools

check_conformance ~289 tokens
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
get_conditions ~107 tokens
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.
is_verified ~248 tokens
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
lookup_server ~234 tokens
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
preflight_agent ~286 tokens
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),
verify_verdict ~163 tokens
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

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