io.github.shoggi211/jsonaut
jsonaut
Repair malformed JSON from LLM/agent output; optional JSON Schema coercion. Free + x402 paid.
alive probed 2026-10-05 · HTTP 200
4tools
902tokens in Claude Opus 5.5
942tokens in Claude Code
0.5 %of a 200k context window
510o200k_base estimate
174 msto initialize
270 msto list tools
- Endpoint
- https://jsonaut.jsonaut-shaurya.workers.dev/mcp (streamable-http)
- Host
- jsonaut.jsonaut-shaurya.workers.dev
- Protocol
- 2025-06-18
- Reports itself as
- jsonaut 0.1.0
- Capabilities
- tools
- Instructions
- 234 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/shoggi211/jsonaut
- Website
- https://jsonaut.jsonaut-shaurya.workers.dev
- Registry
- active, updated 2026-07-02 · registry entry
- Reachable
- 6 of the last 6 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| extract_json | 156 | 31 % |
| repair_json | 152 | 30 % |
| infer_schema | 128 | 25 % |
| validate_json | 74 | 15 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-05 16:29 | alive | 174 ms | 4 | 902 | 510 |
| 2026-10-05 00:55 | alive | 72 ms | 4 | 510 | |
| 2026-10-04 10:07 | alive | 376 ms | 4 | 510 | |
| 2026-10-04 08:00 | alive | 339 ms | 4 | 510 | |
| 2026-10-03 20:40 | alive | 339 ms | 4 | 510 | |
| 2026-10-03 17:55 | alive | 419 ms | 4 | 510 |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.shoggi211/jsonaut)
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.