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

Name: MCP Verification Gate: check an MCP server or an A2A agent before you connect or delegate
Author: ogasurfproject-jpg

MCP serverMCP

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

Listed on its own since 2026-09-26. Until then it was part of horizon-shield-construction-renovation-estimate, where its earlier checks remain.

by ogasurfproject-jpgrepository ↗homepage ↗v0.4.20

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Observed by Wellknown

Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability48/48 checks ok

when	check	result	http	latency	detail
7 h ago	mcp initialize	ok	200	12 ms	server hs-verify-gate 0.4.20 · protocol 2025-06-18 · 6 tools
13 h ago	mcp initialize	ok	200	13 ms	server hs-verify-gate 0.4.20 · protocol 2025-06-18 · 6 tools
20 h ago	mcp initialize	ok	200	10 ms	server hs-verify-gate 0.4.20 · protocol 2025-06-18 · 6 tools
27 h ago	mcp initialize	ok	200	14 ms	server hs-verify-gate 0.4.20 · protocol 2025-06-18 · 6 tools
34 h ago	mcp initialize	ok	200	26 ms	server hs-verify-gate 0.4.20 · protocol 2025-06-18 · 6 tools
2 d ago	mcp initialize	ok	200	18 ms	server hs-verify-gate 0.4.20 · protocol 2025-06-18 · 6 tools
2 d ago	mcp initialize	ok	200	14 ms	server hs-verify-gate 0.4.20 · protocol 2025-06-18 · 6 tools
2 d ago	mcp initialize	ok	200	12 ms	server hs-verify-gate 0.4.20 · protocol 2025-06-18 · 6 tools
3 d ago	mcp initialize	ok	200	14 ms	server hs-verify-gate 0.4.20 · protocol 2025-06-18 · 6 tools
3 d ago	mcp initialize	ok	200	14 ms	server hs-verify-gate 0.4.20 · protocol 2025-06-18 · 6 tools

Tools observed via MCP handshake

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 eve
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
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,
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 me
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 m
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 reques

Declared by sources

What the publisher says

Attributed to the source that supplied each field. Treated as claims, not facts.

No long description beyond the summary.

kind Official MCP Registry

name Official MCP Registry

repoUrl Official MCP Registry

summary Official MCP Registry

version Official MCP Registry

description Official MCP Registry

homepageUrl Official MCP Registry

publisherName Official MCP Registry

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

Official MCP Registryio.github.ogasurfproject-jpg/hs-verify-gate

first seen 1 mo ago · fetched 2 d agoopen ↗

Field history (12 recent events)

11 d ago · declared · name → "MCP Verification Gate: check an MCP server or an A2A agent before you connect or delegate"
11 d ago · declared · summary → "Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key."
11 d ago · declared · description → "Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key."
11 d ago · declared · version → "0.4.20"
13 d ago · declared · version → "0.4.15"
13 d ago · declared · version → "0.4.14"
13 d ago · declared · summary → "Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily."
13 d ago · declared · protocols → ["mcp"]
13 d ago · declared · description → "Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily."
13 d ago · declared · publisherName → "ogasurfproject-jpg"
13 d ago · declared · homepageUrl → "https://shield.the-horizons-innovation.com/verify-directory/"
13 d ago · declared · repoUrl → "https://github.com/ogasurfproject-jpg/horizon-shield"

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Evidence

What the publisher says

Capabilities

Where this record came from