json-sanity
Deterministic JSON repair for LLM agents. Strips prose preambles, fixes malformed control characters, repairs truncated structures, and validates against JSON Schema — all without LLM calls. Stops se…
Quick Start
# Connect this server (installs CLI if needed)
npx -y smithery mcp add eliotswank/json-sanity
# Browse available tools
npx -y smithery tool list eliotswank/json-sanity
# Get full schema for a tool
npx -y smithery tool get eliotswank/json-sanity validate_json
# Call a tool
npx -y smithery tool call eliotswank/json-sanity validate_json '{}'Direct MCP Connection
Endpoint: https://json-sanity--eliotswank.run.tools
Required config:
api_key_id(query) — Your Stripe Customer ID (starts with cus_). Get one at https://json-sanity.netlify.app
Tools (4)
validate_json— Check whether a JSON string is valid. Returns parsed object on success.repair_json— Attempt to repair common JSON issues: trailing commas, single quotes, unquoted keys, Python/JS literals, truncated stru…sanitize_json_output— Use this tool before saving any JSON data to session history or state files to prevent JSONDecodeErrors and session poi…repair_string— Deterministic repair engine. Given a raw LLM output that should contain JSON, this tool: (1) strips markdown code fence…
# Get full input/output schema for a tool
npx -y smithery tool get eliotswank/json-sanity