MCP.Market

Toolpin MCP server

online · 100% uptime
by toolpin.dev·dev.toolpin/toolpin·v0.1.0
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Check whether an MCP server answers, what its tools claim, and whether that claim has changed.

A92/100grade A
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Safety scan
A92/100

full report

Adoption
Growing

0 stars

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If you have run it, two minutes of your experience saves the next person an afternoon.

Toolpin tools (6)

write = sends, deletes, buys or posts
  • get_serverFree

    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.

  • get_server_changesFree

    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.

  • get_server_toolsFree

    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.

  • get_spec_statusFree

    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.

  • search_serversFree

    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.

  • watch_serverFree

    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.

Public scan report

scanner v0.1.10 · 2026-10-16 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 481ms20/20
  • Tool poisoning6 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 26 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; website matches verified namespace9/10
Overall 92/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Toolpin compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
92/100
higher than 93% of 48,243 servers
Tools
6
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
194 ms
faster than 67% of 30,027 servers

What its tools let an agent do: 6 read

Install Toolpin in Claude Code, Cursor or VS Code

claude mcp add --transport http toolpin https://toolpin.dev/mcp
Add to Cursor

What the publisher says

From the Toolpin repository's README, as published. We do not edit it. Read it on GitHub

Toolpin MCP server

An MCP server that answers questions about other MCP servers: whether one answered when we last probed it, what its tools claimed to do, and whether that claim has changed since.

Useful when an agent is choosing which server to depend on, and useful in the moment something breaks and you want to know whether the tools moved under you.

https://toolpin.dev/mcp   Streamable HTTP, stateless, no sign-up.

{
  "mcpServers": {
    "toolpin": {
      "url": "https://toolpin.dev/mcp"
    }
  }
}

Tools

Full parameters and response shapes: , or the machine-readable schema at .

Limits

No key needed to read. Add one as an Authorization: Bearer header to raise the limit, and to use watch_server, which acts on your account.

The limit counts distinct servers, not requests. Asking about the same servers all day costs one against the limit each, however often you ask, so watching your own dependencies never runs out. Never put a key in a URL.

What it will not tell you

No score, no grade, no rating, no safety judgment. Tool descriptions and annotations are reproduced exactly as the server published them: they are claims by that server's author, not anything Toolpin verified. A tool whose annotations say it only reads may do anything at all.

What Toolpin can tell you is whether the claim changed, because it hashes the fields the MCP specification defines and compares them daily. That is the whole product.

Methodology:

This repository

Documentation and the published registry manifest. The service itself is closed source. Tool-definition changes are recorded in CHANGELOG.md, which is the same thing Toolpin watches for on everyone else.

Questions:

Nothing above is checked by us. What we check is on the safety report.

Toolpin: common questions

Is Toolpin MCP server safe?
Yes, by our scan: it is graded A (92/100). Read the Toolpin safety report
How do I install Toolpin?
It runs remotely at toolpin.dev. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Toolpin need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Toolpin maintained?
The last commit was 46 days ago (2026-09-20). The latest release is v0.1.0.
Is Toolpin up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Toolpin?
Servers from other publishers that do the same job: Contact Affordance MCP server and Business Contact Finder MCP server.
How does Toolpin compare with other MCP servers?
safety score 92/100 (higher than 93% of 48,243 servers); tools 6 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to Toolpin

Same job from other publishers: the closest match first, then the best rated.

  • Contact Affordance
    Check how to contact a business website, and whether that contact path actually works.
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  • Business Contact Finder
    Check how to contact a business website, and whether that contact path actually works.
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