MockHero vs JSON Generator: Beyond Static Mock Files

TL;DR

JSON Generator gives you a quick JSON blob for a prototype. MockHero gives you a repeatable, versioned, relational dataset you can re-seed on every CI run.

Mental Model

• JSON Generator — template language renders a random JSON tree.
• MockHero — declarative schema of tables, fields, and refs. Call it from code. Re-run it with a seed.

Relational Data

JSON Generator can reference other fields within a document, but cross-table foreign keys across hundreds of rows get clumsy fast. MockHero was built for this case. A single API call returns every row in every table, all wired together.

Determinism

MockHero accepts a seed parameter that makes regeneration deterministic. JSON Generator is non-deterministic by default.

{ "seed": 42, "tables": [/* ... */] }

Database-Ready Output

MockHero emits SQL INSERT statements with correct quoting for PostgreSQL, MySQL, and SQLite. JSON Generator only emits JSON — you'd write the conversion yourself.

Use the Right Tool

• JSON Generator — a single mock response for a prototype.
• MockHero — seeding a whole dev/staging/CI environment.

Get Started

Create a free MockHero account and generate your first relational dataset in seconds.