com.yaktool/yaktool
yaktool
Is the com.yaktool/yaktool MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.
73 local deterministic tools: GTIN, feeds, CSV-XLSX, Digital Link QR, e-invoices. Rules cited.
alive probed 2026-11-14 · unchanged since 2026-10-31
- Run it
- npx -y yaktool-mcp@0.4.2 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- yaktool 0.4.2
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 4.9 % of a 1M context window
- Count
- 49k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 50k. The o200k_base estimate is 30k. Counted again when the tool definitions change. Method.
- Registry
- active, updated 2026-08-26 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.65×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| validate_tax_ids | 1 194 | 724 | 2 % |
| validate_iban | 1 008 | 611 | 2 % |
| generate_digital_link_qr | 1 008 | 611 | 2 % |
| check_main_image | 983 | 596 | 2 % |
| convert_xlsx_to_csv | 967 | 586 | 2 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- com.yaktool/invoice · alive
- com.yaktool/labels · alive
- com.yaktool/pdf · alive
- com.yaktool/store · alive
- Video Extract com.yanlinglabs/video-extract-mcp · alive
- Yab, Yet Another Browser com.yetanotherbrowser/yab · alive
- HyperMarrow cool.qianshi/hypermarrow · alive
- DrillFlow de.drillflow/mcp · alive
Servers that mention yaktool.
- com.yaktool/gs1 · alive
- com.yaktool/compliance · alive
- com.yaktool/image · 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
- This server is in the heaviest 10 % of the registry. Shorter descriptions, fewer optional parameters and fewer tools cut the cost. The command npx mcpcost --url <endpoint> --tools 50 lists every tool with its cost.