Registry is an MCP server with 5 tools an agent can call, among them check_mcp_server, check_mcp_stack, check_tool. It answers at https://api.policylayer.com/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 10 of 10 times since 5 September 2026; the last check, on 18 October 2026, succeeded.
The MCP server that vets MCP servers: identity, risk grade and per-tool risk before you install.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
check_mcp_server | Check an MCP server against the PolicyLayer registry BEFORE installing or allowing it. Accepts a registry slug, an npm package name (scoped or not), a remote server URL (https://…), or a server name. Returns the full published record: ident Inputs: server |
check_mcp_stack | Check a whole MCP stack against the PolicyLayer registry in one call — up to 25 servers, each given as candidate identifiers (npm package name, registry slug, or remote URL) tried in order until one resolves. Returns the published record fo Inputs: servers |
check_tool | One tool's full risk classification on a published MCP server: category, severity, risk analysis and evidence, OWASP classes, parameter schema and the recommended policy default. Use when deciding whether to allow a specific tool call, e.g. Inputs: server, tool |
get_change_events | The registry change feed: tool-surface drift, auth-posture flips, impostor flags, version bumps — every event the freshness watchers emit, id-cursored so a consumer resumes exactly where it stopped. Requires a Registry Licence key (Authoriz Inputs: after_id, limit, severity |
search_registry | Search the PolicyLayer registry of published MCP servers by name, slug or package substring. Returns candidate matches with risk grade, identity confidence (verified / unverified / mismatch — mismatch means it claims to be an official serve Inputs: query, limit |
Every block below points at https://api.policylayer.com/mcp. Pick your client and copy.
claude mcp add --transport http registry https://api.policylayer.com/mcp
{
"mcpServers": {
"registry": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://api.policylayer.com/mcp"]
}
}
}{
"mcpServers": {
"registry": {
"url": "https://api.policylayer.com/mcp"
}
}
}{
"servers": {
"registry": {
"type": "http",
"url": "https://api.policylayer.com/mcp"
}
}
}{
"context_servers": {
"registry": {
"url": "https://api.policylayer.com/mcp"
}
}
}{
"mcpServers": {
"registry": {
"serverUrl": "https://api.policylayer.com/mcp"
}
}
}{
"mcpServers": {
"registry": {
"url": "https://api.policylayer.com/mcp"
}
}
}name: Registry
version: 0.0.1
schema: v1
mcpServers:
- name: Registry
type: streamable-http
url: https://api.policylayer.com/mcp{
"mcpServers": {
"registry": {
"httpUrl": "https://api.policylayer.com/mcp"
}
}
}{
"mcpServers": {
"registry": {
"type": "http",
"url": "https://api.policylayer.com/mcp"
}
}
}{
"mcpServers": {
"registry": {
"url": "https://api.policylayer.com/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fapi.policylayer.com%2Fmcp&type=streamable_http&id=registry&name=Registry
It answered our last check on 18 October 2026 in 300 ms. Over 10 checks since 5 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by policylayer.com and served from api.policylayer.com, the vendor's own domain: https://api.policylayer.com/mcp.
5, as returned by the server's own tools/list on 31 August 2026: check_mcp_server, check_mcp_stack, check_tool, get_change_events, search_registry.
It answered our last check on 18 October 2026 in 300 ms. Over 10 checks since 5 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://api.policylayer.com/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: com.policylayer. Endpoint host: api.policylayer.com. ARD identifier: urn:air:com.policylayer:mcp:registry.
First indexed 31 August 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.