MCP Radar
MCP Server

toolpin

dev.toolpin/toolpin
MCP & Agent Infrastructure Public & reachable MCP 2025-11-25

What this MCP does

Monitors MCP servers for reachability, tool-definition changes, specification status, and optional change notifications.

Capabilities

Tools

6 tools
get_server
Everything Toolpin has observed about one MCP server: reachability of each remote endpoint and when each was last checked and last verified, repository activity, the current tool-definition hash, and how many changes it has recorded in the last 90 days. The reply includes the catalog-wide drift rate so that count can be read against a baseline.
Input schema 
{'type': 'object', 'title': 'get_serverArguments', 'required': ['name'], 'properties': {'name': {'type': 'string', 'title': 'Name'}}}
get_server_changes
Changes Toolpin recorded for one MCP server: tool definitions changing, and endpoints going down or coming back. Each change says which tools moved and which of their fields differed, with the hash before and after. Includes the catalog-wide drift rate for comparison.
Input schema 
{'type': 'object', 'title': 'get_server_changesArguments', 'required': ['name'], 'properties': {'days': {'type': 'integer', 'title': 'Days', 'default': 90}, 'name': {'type': 'string', 'title': 'Name'}}}
get_server_tools
The tool definitions one MCP server advertised when Toolpin last read them, each with a SHA-256 hash of the fields the MCP specification defines. Use this to see what a server's tools claim to do without connecting to it, or to compare a hash you pinned earlier.
Input schema 
{'type': 'object', 'title': 'get_server_toolsArguments', 'required': ['name'], 'properties': {'name': {'type': 'string', 'title': 'Name'}}}
get_spec_status
The current MCP specification revision, which of its proposals Toolpin checks for, and how much of the catalog has migrated. Use this to find out what the current revision is and how unusual it is to still be on an older one.
Input schema 
{'type': 'object', 'title': 'get_spec_statusArguments', 'properties': {}}
search_servers
Find MCP servers in the public registry by name or title. Returns the canonical name, description, and whether the server answered our last probe. Use this to turn a rough idea of a server into the exact name the other tools need.
Input schema 
{'type': 'object', 'title': 'search_serversArguments', 'required': ['query'], 'properties': {'limit': {'type': 'integer', 'title': 'Limit', 'default': 10}, 'query': {'type': 'string', 'title': 'Query'}}}
watch_server
Start monitoring an MCP server on the caller's Toolpin account, so they are emailed when it changes or stops answering. Needs an API key. Says so plainly if the account is already at its plan limit rather than failing.
Input schema 
{'type': 'object', 'title': 'watch_serverArguments', 'required': ['name'], 'properties': {'name': {'type': 'string', 'title': 'Name'}}}
History

Recent tool changes

Added
watch_server
Sept. 21, 2026, 2:40 a.m.
Added
get_spec_status
Sept. 21, 2026, 2:40 a.m.
Added
get_server_changes
Sept. 21, 2026, 2:40 a.m.
Added
get_server_tools
Sept. 21, 2026, 2:40 a.m.
Added
get_server
Sept. 21, 2026, 2:40 a.m.
Added
search_servers
Sept. 21, 2026, 2:40 a.m.
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