mcpcost

io.github.isgudtek/mycrab-mcp

mycrab-mcp

Is the mycrab- MCP server down? No. Installed with mcp<2, it started and listed its tools on 2026-10-31.

Instant public HTTPS URLs for AI agents via Cloudflare Tunnels. x402 custom domains.

needs mcp<2 probed 2026-11-14 · unchanged since 2026-10-31

4tools, with mcp<2
565tokens in Claude Opus 5.5
0.3 %of Claude's 200k window

A plain install of the package stops at the import below. These tool definitions are from a second install with mcp<2, started in a container with the network off, on 2026-10-31.

MCP error -32000: Connection closed
ModuleNotFoundError: No module named 'mcp.server.fastmcp'. This is mcp 2.x, where FastMCP was renamed to MCPServer (from mcp
Run it
uvx --with 'mcp<2' mycrab-mcp@0.1.1 (stdio, probed in a container with the network off)
Host
pypi.org
Reports itself as
mycrab 1.30.0
Capabilities
experimental, prompts, resources, tools
Repository
https://github.com/isgudtek/mycrab-mcp
Registry
active, updated 2026-02-28 · registry entry
Changes
2 recorded, reachable in 0 of them. A row is added when the result, the tool count or the cost changes.

Most expensive tools

Estimates with the o200k_base tokenizer.

Toolo200k estimateShare of this server
buy_domain_sol11840 %
setup_free_tunnel7224 %
check_domain5519 %
get_skill_docs5117 %

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History

We add a row when the result changes. A server with no change keeps its last row.

ProbedResultInitToolsClaudeo200k
2026-10-31 07:37needs mcp<21.2 s4565296
2026-10-17 06:16crashed on start

Badge for the README

mcpcost: needs mcp<2

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

Atom feed

A mail when this server changes

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.

For the publisher

The cause and the fix, with the code before and after: ModuleNotFoundError: No module named 'mcp.server.fastmcp'