io.github.dma9527/irs-taxpayer
irs-taxpayer-mcp
44 local US tax estimation and planning tools for supported TY2024 through TY2026 scenarios.
alive probed 2026-10-14
44tools
24ktokens in Claude Opus 5.5
25ktokens in Claude Code
12.1 %of a 200k context window
13ko200k_base estimate
687 msto initialize
41 msto list tools
- Run it
- npx -y irs-taxpayer-mcp@1.1.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- irs-taxpayer-mcp 1.1.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/dma9527/irs-taxpayer-mcp
- Registry
- active, updated 2026-09-18 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| calculate_federal_tax | 1 199 | 9 % |
| generate_full_tax_report | 929 | 7 % |
| calculate_total_tax | 836 | 6 % |
| generate_tax_plan | 715 | 6 % |
| process_1099_income | 453 | 4 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.dma9527/irs-taxpayer)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.