mcpcost

io.github.ShaftHQ/shaft-mcp

shaft-mcp

Is the shaft- MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-13.

SHAFT browser automation, capture, and offline deterministic failure diagnosis

alive probed 2026-11-15 · unchanged since 2026-11-13

122tools
31ktokens in Claude Opus 5.5
15.7 %of Claude's 200k window
12×the median server
13.1 sto initialize
105 msto list tools
Run it
docker run -i --rm ghcr.io/shafthq/shaft-engine-mcp:10.4.20261112 (stdio, probed in a container with the network off)
Host
ghcr.io
Reports itself as
shaft-mcp 10.4.20261112
Capabilities
completions, logging, prompts, resources, tools
Instructions
1 596 characters
Of a 1M window
3.1 % of a 1M context window
Count
31k tokens in Claude Opus 5.5, exact, measured 2026-10-30. With the Claude Code prefix mcp__…__ on each tool name: 33k. The o200k_base estimate is 16k. Counted again when the tool definitions change. Method.
Repository
https://github.com/ShaftHQ/SHAFT_ENGINE
Website
https://ShaftHQ.github.io/
Registry
active, updated 2026-11-12 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 2.00×.

Tool≈ Claude tokenso200k estimateShare of this server
capture_start2 6781 3389 %
capture_generate_replay9034513 %
driver_initialize6593292 %
setup_stop5982992 %
doctor_analyze_failed_allure5982992 %

Compare this server with others.

More servers

Other registry entries on ghcr.io, the ones next to this name; all of them.

Servers that mention shaft or deterministic or automation.

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mcpcost: alive

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

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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