Jsonaut is a remote MCP server that gives an AI agent 4 tools, among them extract_json, infer_schema, repair_json. It answers at https://jsonaut.jsonaut-shaurya.workers.dev/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 24 October 2026, succeeded.
Repair malformed JSON from LLM/agent output; optional JSON Schema coercion. Free + x402 paid.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
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 Inputs: input, schema, allow_llm_fallback |
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 Inputs: input, as_samples |
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 Inputs: input, schema, allow_llm_fallback |
validate_json | Validate a JSON string against a JSON Schema. Free. Returns validity and a list of violations. Inputs: input, schema |
Every block below points at https://jsonaut.jsonaut-shaurya.workers.dev/mcp. Pick your client and copy.
claude mcp add --transport http jsonaut https://jsonaut.jsonaut-shaurya.workers.dev/mcp
{
"mcpServers": {
"jsonaut": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"]
}
}
}{
"mcpServers": {
"jsonaut": {
"url": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"
}
}
}{
"servers": {
"jsonaut": {
"type": "http",
"url": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"
}
}
}{
"context_servers": {
"jsonaut": {
"url": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"
}
}
}{
"mcpServers": {
"jsonaut": {
"serverUrl": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"
}
}
}{
"mcpServers": {
"jsonaut": {
"url": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"
}
}
}name: Jsonaut
version: 0.0.1
schema: v1
mcpServers:
- name: Jsonaut
type: streamable-http
url: https://jsonaut.jsonaut-shaurya.workers.dev/mcp{
"mcpServers": {
"jsonaut": {
"httpUrl": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"
}
}
}{
"mcpServers": {
"jsonaut": {
"type": "http",
"url": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"
}
}
}{
"mcpServers": {
"jsonaut": {
"url": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fjsonaut.jsonaut-shaurya.workers.dev%2Fmcp&type=streamable_http&id=jsonaut&name=Jsonaut
It answered our last check on 24 October 2026 in 153 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
4, as returned by the server's own tools/list on 21 September 2026: extract_json, infer_schema, repair_json, validate_json.
It answered our last check on 24 October 2026 in 153 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://jsonaut.jsonaut-shaurya.workers.dev/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.shoggi211. Endpoint host: jsonaut.jsonaut-shaurya.workers.dev. ARD identifier: urn:air:io.github.shoggi211:mcp:jsonaut.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.