io.github.aurelio-nakamura/dataloupe
Dataloupe
Is the Dataloupe MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-29.
Offline MCP server to explore CSV/JSON/Parquet/Excel: preview, query, diff, render interactive HTML
alive probed 2026-11-15 · unchanged since 2026-10-29
- Run it
- docker run -i --rm ghcr.io/aurelio-nakamura/dataloupe:0.15.0 (stdio, probed in a container with the network off)
- Host
- ghcr.io
- Reports itself as
- dataloupe 0.15.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.3 % of a 1M context window
- Count
- 2.7k tokens in Claude Opus 5.5, exact, measured 2026-10-29. With the Claude Code prefix mcp__…__ on each tool name: 2.8k. The o200k_base estimate is 1.5k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/aurelio-nakamura/dataloupe
- Website
- https://aurelio-nakamura.github.io/dataloupe/
- Registry
- active, updated 2026-09-01 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.77×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| visualize_data | 761 | 431 | 28 % |
| query_data | 645 | 365 | 24 % |
| sql_query | 385 | 218 | 14 % |
| diff_data | 304 | 172 | 11 % |
| describe_data | 240 | 136 | 9 % |
Compare this server with others.
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Servers that mention interactive or explore.
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- ai.switchapp/switch · alive
- ai.smithery/Phionx-mcp-hello-server · not found
- ai.smithery/afgong-sqlite-mcp-server · not found
- ai.smithery/arjunkmrm-ahoy2 · not found
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.