io.github.oinam/ovellum
Ovellum
Is the Ovellum MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.
Auto, manual, or hybrid docs that never fall out of sync.
alive probed 2026-11-14 · unchanged since 2026-10-31
9tools
1.5ktokens in Claude Opus 5.5
0.7 %of Claude's 200k window
0.6×the median server
1.2 sto initialize
17 msto list tools
- Run it
- npx -y ovellum@0.24.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- ovellum 0.24.0
- Capabilities
- prompts, resources, tools
- Instructions
- none
- Of a 1M window
- 0.1 % of a 1M context window
- Count
- 1.5k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 1.6k. The o200k_base estimate is 844. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/oinam/ovellum
- Website
- https://ovellum.oss.oinam.com
- Registry
- active, updated 2026-07-13 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.76×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| ovellum_write_zone | 284 | 161 | 19 % |
| ovellum_reattach | 268 | 152 | 18 % |
| ovellum_query_symbol | 169 | 96 | 11 % |
| ovellum_search_docs | 150 | 85 | 10 % |
| ovellum_get_page | 145 | 82 | 10 % |
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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.