---
title: "Cross-server tool shadowing for one MCP server (?url=): handshake and tools/list only; which publisher-verified servers in the registry roster it copies tool names (and descriptions) from. Signed (crawlcheck-mcp-shadow)"
method: GET
path: "/api/v1/mcp/shadow"
---

# Cross-server tool shadowing for one MCP server (?url=): handshake and tools/list only; which publisher-verified servers in the registry roster it copies tool names (and descriptions) from. Signed (crawlcheck-mcp-shadow)

`GET /api/v1/mcp/shadow`

## Request

- Base URL: `https://crawlcheck.io`
- URL: `https://crawlcheck.io/api/v1/mcp/shadow`
- Auth: none required

## Query parameters

- `url` string, required

## Response `200`

crawlcheck-mcp-shadow

- object, nullable
  - `kind` string, nullable
  - `v` number, nullable
  - `checked_at` string, nullable
  - `servers` object[], nullable
    - `name` string, nullable
    - `url` string, nullable
    - `outcome` string, nullable
    - `tools` number, nullable
    - `shadows` object[], nullable
      - `server` string, nullable
      - `host` string, nullable
      - `apex` string, nullable
      - `shadows` string, nullable
      - `shadows_host` string, nullable
      - `shadows_apex` string, nullable
      - `kind` string, nullable
      - `shared_names` number, nullable
      - `identical_descriptions` number, nullable
      - `names` string[], nullable
      - `tools_server` number, nullable
      - `tools_reference` number, nullable
  - `collisions` object[], nullable
    - `tool` string, nullable
    - `servers` string[], nullable
  - `verdict` string, nullable
  - `decision` string, nullable
  - `compared_with` object, nullable
    - `servers_with_tool_lists` number, nullable
    - `reference_servers` number, nullable
    - `roster_rev` number, nullable
    - `census_at` string, nullable
  - `reading` unknown
  - `sha256` unknown
  - `signature` unknown

---

[API](https://skmtc.dev/crawlcheck/apis/crawlcheck-api.md) · [All operations](https://skmtc.dev/crawlcheck/apis/crawlcheck-api/llms.txt) · [OpenAPI document](https://skmtc.dev/crawlcheck/apis/crawlcheck-api/revisions/57acbd6d4489?raw)