MCP Verification Gate: conformance and disclosure checker for MCP servers
connectsgate.horizonshield.dev
Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.
https://gate.horizonshield.dev/mcpWebsiteNo authMCP 2026-07-28v0.4.20last checked 18 Oct 2026spoke MCP on 100% of 84 checks (30 days)initialize in 148 msWill my client connect?
Decided from what the probe found at the endpoint, and from what each client's own documentation says it can complete. Every row carries the day that documentation was read.
✓Claude CodeConnects
The endpoint answers an anonymous handshake, so no credential is needed.
claude mcp add --transport http mcp-verification-gate-conformance-and-disclosure-checker-for-mcp-servers https://gate.horizonshield.dev/mcpClaude Code docs · read on 2026-08-30
✓Claude (claude.ai & Desktop)Connects
The endpoint answers an anonymous handshake, so no credential is needed.
Settings → Connectors → Add custom connector, then paste https://gate.horizonshield.dev/mcp.
Claude (claude.ai & Desktop) docs · read on 2026-08-30
✓ChatGPTConnects
The endpoint answers an anonymous handshake, so no credential is needed.
Settings → Apps → Advanced settings → Developer mode, then create a connector pointing at https://gate.horizonshield.dev/mcp.
ChatGPT docs · read on 2026-08-30
✓CursorConnects
The endpoint answers an anonymous handshake, so no credential is needed.
{
"mcpServers": {
"mcp-verification-gate-conformance-and-disclosure-checker-for-mcp-servers": {
"url": "https://gate.horizonshield.dev/mcp"
}
}
}Cursor docs · read on 2026-08-30
✓VS Code (Copilot)Connects
The endpoint answers an anonymous handshake, so no credential is needed.
{
"servers": {
"mcp-verification-gate-conformance-and-disclosure-checker-for-mcp-servers": {
"type": "http",
"url": "https://gate.horizonshield.dev/mcp"
}
}
}VS Code (Copilot) docs · read on 2026-08-30
How to authenticate
Checked against the endpoint by our probe on 18 Oct 2026. These are the capabilities the server advertises, not a prediction about any particular client.
| Scheme | No auth |
|---|---|
| Protected-resource metadata | ✕Not found Without it a client has to guess where the authorization server lives. |
| Anonymous access | Handshake succeeds; 6 tools listable |
Tools
Contract history
Instructions rewritten: check_conformance. The description an agent follows changed; the callable contract may not have.
Breaking: check_conformance, get_conditions, lookup_server
Instructions rewritten: lookup_server. The description an agent follows changed; the callable contract may not have.
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Status badge
Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.
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