Skip to content

mcpcost

by ondraulehla · remote · no sign-in to list tools · v0.2.0 · published by GitHub user ondraulehla

Health and token cost of every remote MCP registry server, probed daily. Look up, search, or probe.

Changes · 2
CompareRegistry entry

4 tools: 2 change things and 2 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http mcpcost https://mcpcost.ulehla.dev/mcp

Findings

Matches of fixed checks, with the text they matched.

1 info
  • Infocheck_server

    The description mentions "credentials".

    Matched text

    description: "...URL now (initialize and tools/list, no credentials, 10 s timeout) and reports status, prot..."

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

4 tools

Changes things 2Claude Code: ask
  • check_serverConnects to an MCP server URL now (initialize and tools/list, no credentials, 10 s timeout) and reports status, protocol, tools and the token cost of the tool definitions: exact in…1 finding

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.

    Findings

    • Info

      The description mentions "credentials".

      Matched text

      description: "...URL now (initialize and tools/list, no credentials, 10 s timeout) and reports status, prot..."

      What this check looks for
    Description, as the server wrote it
    Connects to an MCP server URL now (initialize and tools/list, no credentials, 10 s timeout) and reports status, protocol, tools and the token cost of the tool definitions: exact in Claude when the counter is available, else an estimate from the schema size. For registry servers prefer lookup_server.
  • registry_summaryAggregates of the latest daily run: how many servers answer, token cost percentiles, protocol versions, heaviest servers.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Aggregates of the latest daily run: how many servers answer, token cost percentiles, protocol versions, heaviest servers.
Only reads 2Claude Code: allow
  • lookup_serverLatest probe of one server from the official MCP registry: status, protocol, tool count, exact token cost of its tool definitions in Claude, latency.No findings

    Why it is in this group

    • The name "lookup_server" says "lookup": a word for reading.
    Description, as the server wrote it
    Latest probe of one server from the official MCP registry: status, protocol, tool count, exact token cost of its tool definitions in Claude, latency. Accepts the registry name (io.github.owner/name) or the server URL.
  • search_serversFind servers by words in name, title, description or host, with optional filters, sorted by exact Claude token cost by default.No findings

    Why it is in this group

    • The name "search_servers" says "search": a word for reading.
    Description, as the server wrote it
    Find servers by words in name, title, description or host, with optional filters, sorted by exact Claude token cost by default. Returns up to 20 servers per page; page numbers go to 20, after that pass the `next` cursor from the previous answer.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.2.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http mcpcost https://mcpcost.ulehla.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__mcpcost__lookup_server",
      "mcp__mcpcost__search_servers"
    ],
    "ask": [
      "mcp__mcpcost__check_server",
      "mcp__mcpcost__registry_summary"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as mcpcost. Review it before you use it.