mcp server
jsonaut
Repair malformed JSON from LLM/agent output; optional JSON Schema coercion. Free + x402 paid.
Description as published by the maintainer. Source
- version 0.1.0
- active
active — Registry entry last updated 2026-07-02.
What this server can do
4 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.
extract_json(input, schema, allow_llm_fallback)- 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. Required: input.
infer_schema(input, as_samples)- 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. Required: input.
repair_json(input, schema, allow_llm_fallback)- 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). Required: input.
validate_json(input, schema)- Validate a JSON string against a JSON Schema. Free. Returns validity and a list of violations. Required: input, schema.
Last successful function declaration observed on . Source: https://jsonaut.jsonaut-shaurya.workers.dev/mcp. We list what the server declared; we do not call any of these functions.
Endpoint status observed on . Source: https://jsonaut.jsonaut-shaurya.workers.dev/mcp.
Signals
These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.
| Signal | Value | What it measures | Window | Observed | Source |
|---|---|---|---|---|---|
| Latest published version | 0.1.0 | Latest version string the maintainer published to the registry. | as of fetch | Model Context Protocol | |
| Registry record last updated | 2026-07-02 | When the registry record was last updated by its maintainer. | point in time | Model Context Protocol | |
| First listed in the MCP Registry | 2026-07-02 | Date this server was first published to the official MCP Registry. Not a usage or quality measure. | point in time | Model Context Protocol | |
| mcp tools declared | 4 tools | Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. | as of probe | jsonaut.jsonaut-shaurya.workers.dev | |
| mcp endpoint status | ok | The server listed 4 functions when asked. | as of probe | jsonaut.jsonaut-shaurya.workers.dev |
Where to get it
This record as data
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GET /api/v1/entries/mcp_server.json