JSON Schema - Infer, Validate, TypeScript

JSON Schema Validator & Generator — Infer, Validate & Document

perryay/json-schema-validator-generator

Infer JSON Schema from sample JSON data and validate JSON documents against existing schemas. Supports Draft-04, Draft-07, and 2019-09. Features nested objects, array item type inference, enum detection, batch validation, and human-readable schema documentation generation.

🔥 7-DAY LAUNCH SPRINT (May 1–8, 2026): First 100 runs free for new users. Lightweight web scraper for quick data extraction. Get clean text, raw HTML, all links, and page metadata from any URL.

Provide one or more JSON samples (inline or from URLs) and get an inferred JSON Schema (Draft 7 / 2020-12) describing their shape. Bootstrap API validators, Apify input schemas, BigQuery / DuckDB schemas. Powered by genson. $0.01 per inference.

🔥 7-DAY LAUNCH SPRINT (May 1–8, 2026): First 100 runs free for new users. Natural Language Processing toolkit. Perform sentiment analysis, keyword extraction, readability scoring, language detection, and text summarization. Ideal for content analysis, social media monitoring, and text mining.

JSON Schema Inferer - Draft-07 Schema from JSON or API URL

eliai/json-schema-inferer

Infer a draft-07 JSON Schema from any JSON URL or raw sample: types, required fields, email/date-time/uuid/uri formats, small enums, merged array-item schemas. $0.002 per schema, no start fee, non-JSON never charged — vs $0.011+ measured incumbents. Validate APIs and LLM output fast.

🔥 7-DAY LAUNCH SPRINT (May 1–8, 2026): First 100 runs free for new users. Automatically generate documentation from code repositories. Creates dependency maps, API documentation, README files, and architecture overviews. Supports multiple programming languages.

JSON Schema Batch Validator

junipr/json-schema-batch-validator

Validate JSON/JSONL batches against JSON Schema and return row-level validation errors and summaries.

Sentinel: API Schema Drift MCP Server

daneli/sentinel-schema-drift-mcp

MCP tools for agents: infer JSON Schemas from APIs, diff them with severity ranking (breaking / risky / additive), and check live endpoints against saved baselines.

Validate, format, and analyze JSON data. Check JSON syntax, validate against a JSON schema, count objects/arrays, identify data types, find duplicate keys, and pretty-print minified JSON. Essential for developers, API integration testing, and data quality assurance.

🔥 7-DAY LAUNCH SPRINT (May 1–8, 2026): First 100 runs free for new users. Parse and validate cron expressions with human-readable explanations. Calculate next run times, generate expressions from natural language, and access common presets. Supports standard and extended cron syntax.