MCP Verification Gate: check an MCP server or an A2A agent before you connect or delegate is a remote MCP server that gives an AI agent 5 tools, among them check_conformance, get_conditions, is_verified. It answers at https://gate.horizonshield.dev/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 22 October 2026, succeeded.
Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
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. Confo Inputs: endpoint, allow_tool_call |
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 do |
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 stat Inputs: endpoint |
lookup_server | 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 rec Inputs: endpoint |
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 Inputs: record |
Every block below points at https://gate.horizonshield.dev/mcp. Pick your client and copy.
claude mcp add --transport http mcp-verification-gate-check-an-m https://gate.horizonshield.dev/mcp
{
"mcpServers": {
"mcp-verification-gate-check-an-m": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://gate.horizonshield.dev/mcp"]
}
}
}{
"mcpServers": {
"mcp-verification-gate-check-an-m": {
"url": "https://gate.horizonshield.dev/mcp"
}
}
}{
"servers": {
"mcp-verification-gate-check-an-m": {
"type": "http",
"url": "https://gate.horizonshield.dev/mcp"
}
}
}{
"context_servers": {
"mcp-verification-gate-check-an-m": {
"url": "https://gate.horizonshield.dev/mcp"
}
}
}{
"mcpServers": {
"mcp-verification-gate-check-an-m": {
"serverUrl": "https://gate.horizonshield.dev/mcp"
}
}
}{
"mcpServers": {
"mcp-verification-gate-check-an-m": {
"url": "https://gate.horizonshield.dev/mcp"
}
}
}name: MCP Verification Gate: check an MCP server or an A2A agent before you connect or delegate
version: 0.0.1
schema: v1
mcpServers:
- name: MCP Verification Gate: check an MCP server or an A2A agent before you connect or delegate
type: streamable-http
url: https://gate.horizonshield.dev/mcp{
"mcpServers": {
"mcp-verification-gate-check-an-m": {
"httpUrl": "https://gate.horizonshield.dev/mcp"
}
}
}{
"mcpServers": {
"mcp-verification-gate-check-an-m": {
"type": "http",
"url": "https://gate.horizonshield.dev/mcp"
}
}
}{
"mcpServers": {
"mcp-verification-gate-check-an-m": {
"url": "https://gate.horizonshield.dev/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fgate.horizonshield.dev%2Fmcp&type=streamable_http&id=mcp-verification-gate-check-an-m&name=MCP%20Verification%20Gate%3A%20check%20an%20MCP%20server%20or%20an%20A2A%20agent%20before%20you%20connect%20or%20delegate
It answered our last check on 22 October 2026 in 118 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
5, as returned by the server's own tools/list on 17 September 2026: check_conformance, get_conditions, is_verified, lookup_server, verify_verdict.
It answered our last check on 22 October 2026 in 118 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://gate.horizonshield.dev/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.ogasurfproject-jpg. Endpoint host: gate.horizonshield.dev. ARD identifier: urn:air:io.github.ogasurfproject-jpg:mcp:hs-verify-gate.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.