io.github.willykeenan/agentbrain-contextlib
ContextLib
Is the ContextLib MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-27.
A project's long-term memory as plain Markdown files, with an append-only, tamper-evident log.
alive probed 2026-11-14 · unchanged since 2026-10-27
11tools
1.6ktokens in Claude Opus 5.5
0.8 %of Claude's 200k window
0.6×the median server
167 msto initialize
1 msto list tools
- Run it
- docker run -i --rm ghcr.io/willykeenan/agentbrain-contextlib:0.1.0 (stdio, probed in a container with the network off)
- Host
- ghcr.io
- Reports itself as
- contextlib 0.1.0
- Capabilities
- tools
- Instructions
- 159 characters
- Of a 1M window
- 0.2 % of a 1M context window
- Count
- 1.6k tokens in Claude Opus 5.5, exact, measured 2026-10-27. With the Claude Code prefix mcp__…__ on each tool name: 1.7k. The o200k_base estimate is 848. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/willykeenan/agentbrain-contextlib
- Website
- https://huggingface.co/spaces/willykeenan/contextlib
- Registry
- active, updated 2026-09-26 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.85×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| context_record | 315 | 170 | 20 % |
| context_search | 204 | 110 | 13 % |
| context_review | 172 | 93 | 11 % |
| context_supersede | 144 | 78 | 9 % |
| context_get | 120 | 65 | 8 % |
Compare this server with others.
More servers
Other registry entries on ghcr.io, the ones next to this name; all of them.
- SearXNG HTTP MCP io.github.whw23/searxng-http-mcp · crashed on start
- CNN Fear & Greed Index io.github.wildsurfer/cnnfag · alive
- io.github.wildsurfer/your-mail-mcp · alive
- simpletel io.github.willnewby/simpletel · alive
- AgentBrain Handoffs io.github.willykeenan/agentbrain-handoffs · needs env
- Tanpin io.github.willykeenan/tanpin · alive
- CometBFT validator ops io.github.wookja-0/cometbft-mcp · alive
- io.github.wtronk/geolocation-mcp · alive
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
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 server answers initialize and tools/list. Nothing to fix.