
jsonaut
Repair malformed JSON from LLM/agent output; optional JSON Schema coercion.
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What it can do
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Repair malformed JSON from LLM/agent output; optional JSON Schema coercion. Free + x402 paid.
Server tool list (4)
Raw names from tools/list. Only developers need these.
| repair_json | Repair malformed JSON (trailing commas, single quotes, truncation, markdown fences, comments, python literals) and optionally validate/coerce it against a JSON Schema. Deterministic repair is free. If it fails and allow_llm_fallback is true, a paid LLM repair is attempted (requires x402 payment; charged only on success). |
| validate_json | Validate a JSON string against a JSON Schema. Free. Returns validity and a list of violations. |
| extract_json | Extract JSON embedded in arbitrary text — LLM prose, chat messages, logs, emails — then repair and validate it. Deterministic extraction is free. If no JSON can be located and allow_llm_fallback is true, a paid LLM extracts structured data from the text (requires x402 payment; charged only on success). Pass a JSON Schema to shape the output. |
| infer_schema | Infer a JSON Schema (draft 2020-12) from an example JSON value. Free and deterministic. Set as_samples=true when the input is an array of example objects of the same shape to merge them into one schema. Turns sample agent/tool output into a reusable schema. |