mcpcost

io.github.offprompt/offprompt

offprompt

Is the offprompt MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.

Ask the human for API keys in a browser page and write them to .env. The model only sees key names.

alive probed 2026-11-14 · unchanged since 2026-10-31

3tools
4.9ktokens in Claude Opus 5.5
2.4 %of Claude's 200k window
1.9×the median server
377 msto initialize
15 msto list tools
Run it
npx -y offprompt@0.3.1 (stdio, probed in a container with the network off)
Host
npmjs.com
Reports itself as
offprompt 0.3.1
Capabilities
tools
Instructions
1 210 characters
Of a 1M window
0.5 % of a 1M context window
Count
4.9k tokens in Claude Opus 5.5, exact, measured 2026-10-31. With the Claude Code prefix mcp__…__ on each tool name: 4.9k. The o200k_base estimate is 3.1k. Counted again when the tool definitions change. Method.
Repository
https://github.com/offprompt/offprompt
Website
https://offprompt.dev
Registry
active, updated 2026-10-31 · registry entry
Changes
4 recorded, reachable in 4 of them. A row is added when the result, the tool count or the cost changes.

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.57×.

Tool≈ Claude tokenso200k estimateShare of this server
collect_secret4 3932 79390 %
await_secret3352137 %
cancel_secret129823 %

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More servers

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

Servers that mention browser or human.

History

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

ProbedResultInitToolsClaudeo200k
2026-10-31 07:38alive288 ms34.9k3.1k
2026-10-29 07:47alive209 ms34.8k3.0k
2026-10-26 07:06alive332 ms34.0k2.5k
2026-10-19 06:53alive377 ms32.5k

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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