GenPark Streaming NDJSON & JSONL Schema Validator

A local Python MCP server that incrementally validates streaming NDJSON/JSONL lines, reassembling chunk boundaries and auditing records against a schema.

What you can do

• Validate NDJSON/JSONL lines incrementally as a stream arrives, without waiting for the whole file.
• Reassemble records split across chunk boundaries before checking them.
• Audit each line against a schema and log failing records to a quarantine log.
• Run locally as a small Python standard-library process with no third-party dependencies.

When to use it

Useful when an assistant works with large or continuously arriving newline-delimited JSON, such as logs or event exports, and needs to check each record against a schema and isolate malformed lines instead of failing the whole batch.

Requirements

Runs as a local stdio process started with Python 3 (the README configures it as python mcp_server.py). No authentication, environment variables or headers are declared, and it uses only the Python standard library. Desktop client only.