dev.tabnas/mcp
tabnas
Seven tools over the tabnas parsing engine: parse, validate, diagnose, fixtures, compare.
alive probed 2026-10-08 · HTTP 200
7tools
2.2ktokens in Claude Opus 5.5
2.2ktokens in Claude Code
1.1 %of a 200k context window
1.2ko200k_base estimate
394 msto initialize
155 msto list tools
- Endpoint
- https://mcp.tabnas.dev/mcp (streamable-http)
- Host
- mcp.tabnas.dev
- Protocol
- 2025-06-18
- Reports itself as
- tabnas 0.1.20
- Capabilities
- resources, tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/tabnas/mcp
- Website
- https://tabnas.dev/mcp
- Registry
- active, updated 2026-10-08 · registry entry
- Reachable
- 8 of the last 8 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| compare_grammars | 272 | 22 % |
| test_grammar | 242 | 20 % |
| validate_grammar | 211 | 17 % |
| parse | 203 | 17 % |
| explain_parse_error | 168 | 14 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-08 11:08 | alive | 832 ms | 7 | 2.2k | 1.2k |
| 2026-10-07 11:06 | alive | 897 ms | 7 | 2.2k | 1.2k |
| 2026-10-05 14:00 | alive | 394 ms | 7 | 2.2k | 1.2k |
| 2026-10-05 00:25 | alive | 194 ms | 7 | 1.2k | |
| 2026-10-04 10:00 | alive | 455 ms | 7 | 1.2k | |
| 2026-10-04 07:53 | alive | 535 ms | 7 | 1.2k | |
| 2026-10-03 20:33 | alive | 584 ms | 7 | 1.2k | |
| 2026-10-03 17:50 | alive | 180 ms | 7 | 1.2k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/dev.tabnas/mcp)
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.