Pricing

from $1.60 / 1,000 inferred schemas

Try for free

Go to Apify Store

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

Try for free

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.

Pricing

from $1.60 / 1,000 inferred schemas

Rating

0.0

(0)

Developer

Broke to Built

Actor stats

Bookmarked

Total users

Monthly active users

2 days ago

Last modified

JSON Schema Inferer - Draft-07 Schema from Any JSON API through CLI

The Apify CLI is the official tool that allows you to use JSON Schema Inferer - Draft-07 Schema from JSON or API URL locally, providing convenience functions and automatic retries on errors.

Install Apify CLI

Using installation script (macOS/Linux):

$curl -fsSL https://apify.com/install-cli.sh | bash

Using installation script (Windows):

$irm https://apify.com/install-cli.ps1 | iex

Using Homebrew:

$brew install apify-cli

Using npm:

$npm install -g apify-cli

Other API clients include:

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

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

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

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

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.

Perry AY

LLM Output Validator: JSON Schema + Repair Hints

codeclouds/llm-output-validator

Validate LLM/tool-call JSON output against a JSON Schema (draft-07 or 2020-12) — get machine-readable error paths, concrete repair hints per error, and optional deterministic normalization/repair.

Dennis

Structured Data Extractor — URL to JSON

shelvick/structured-extractor

Extract structured data from a batch of URLs as schema-validated JSON. Send web pages and a JSON Schema; it scrapes each (stealth + residential proxy as needed), runs an LLM to convert the page to JSON matching your schema, and validates per URL. Omit schema for best-effort. Public pages only.

Scott Helvick

Schema.org Markup Validator

scrappy_garden/schema-org-markup-validator

Validate Schema.org structured data for SEO. Parses JSON-LD, detects Microdata and RDFa, highlights schema types, and reports common issues like invalid JSON-LD, missing @type, non-schema.org @context, and missing key properties for popular schema types.

Bikram Adhikari

JSON Schema Auto-Generator (Infer from Samples)

gochujang/json-schema-generator

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.

Hojun Lee

JSON Schema - Infer, Validate, TypeScript

lazymac/json-schema-api

🔥 7-DAY LAUNCH SPRINT (May 1–8, 2026): First 100 runs free for new users. JSON Schema toolkit: automatically infer schemas from JSON data, validate documents against schemas, and generate TypeScript type definitions. Essential for API development and data validation workflows.

2x lazymac

JSON Schema Batch Validator

junipr/json-schema-batch-validator

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

junipr

Apify Dataset JSON Schema Validator

automation-lab/apify-dataset-json-schema-validator

Validate inline JSON records or Apify dataset items against JSON Schema with structured errors and summary counts.

Stas Persiianenko

JSONL Stream Validator

stellar_ballet_0bu/jsonl-stream-validator

Validate a stream of JSONL/NDJSON records against a JSON Schema (draft-07 subset) one line at a time. Per-record error rows, drop-or-tag policy, summary by error type. Pairs with json-schema-validator + jsonl-to-csv.