JSON pipeline

Validate, pretty-print, and convert JSON to CSV in one pass — the complete JSON processing workflow.

When to use this pack

An agent receives raw JSON (from an API response, a webhook body, or user input) and needs to validate it's well-formed, format it for readability, and convert it to CSV for a spreadsheet or data pipeline. Three tools in one payment.

Tools in this pack

• JSON Schema validate $0.002 POST /api/json-validate Validate a JSON document against a JSON Schema (draft-07 subset) and get the list of violations. Supports type, required, properties, items, enum, const, min/max, length, pattern, format, anyOf/allOf/oneOf/not, additionalProperties. Deterministic — check an agent's structured output before you trust it.
• JSON validate & format $0.001 POST /api/json-format Validate, pretty-print, or minify JSON. Returns parse errors with position when invalid.
• JSON to CSV $0.002 POST /api/json-to-csv Convert a JSON array of objects to CSV. Nested objects are flattened to dot-path columns.

Workflow

1. Call json-validate to confirm the input is well-formed JSON (catches syntax errors, trailing commas, etc.).
2. Call json-format to pretty-print with consistent indentation.
3. Call json-to-csv to convert the JSON array to a CSV string for spreadsheet import.

Run it in Claude

claude mcp add agent402 -s user -- npx -y agent402-mcp@latest

Then paste this prompt into Claude:

Process this JSON using Agent402's json-pipeline skill pack: [{"name":"Alice","age":30}]. (1) Validate it, (2) pretty-print it, (3) convert to CSV. Report any validation issues and provide the formatted output.

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