MockHero generates realistic, schema-aware synthetic test data via API. Define any database schema — tables, columns, relationships — and get back fake but realistic rows.
## What you can generate
Names, emails, addresses, phone numbers, products, transactions, invoices, blog posts, and 50+ field types.
## Key features
- **Schema-aware**: define tables with foreign key relationships
- **50+ built-in field types**: uuid, email, phone, address, price, avatar_url, and more
- **AI prompt-to-schema**: describe what you need in plain English
- **Pre-built templates**: e-commerce, CRM, blog, SaaS, and more
- **Multiple output formats**: JSON, SQL INSERT, CSV
- **Deterministic seeds**: reproducible data for CI/CD
- **MCP server**: works with Cursor, Claude Code, Windsurf
## Use cases
- Seed dev/staging databases
- Populate CI/CD test fixtures
- Load test with realistic data
- Demo environments
- QA testing
{"status":"ok","version":"0.1.0","timestamp":"2026-04-02T03:49:14.586Z"}
curl --location --request GET 'https://zylalabs.com/api/12273/database+seeding+mockhero+api/23023/health+check' --header 'Authorization: Bearer YOUR_API_KEY'
| Header | Description |
|---|---|
Authorization
|
[Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed. |
No long-term commitment. Upgrade, downgrade, or cancel anytime. Free Trial includes up to 50 requests.
The Generate Test Data endpoint returns synthetic data based on the defined schema. This includes realistic entries for various fields such as names, emails, and addresses, structured according to the specified tables and relationships.
The response data is organized in a JSON format, with each table represented as a key containing an array of objects. Each object corresponds to a row of generated data, with fields matching the schema definition.
Users can customize their requests by defining parameters such as table names, column specifications, row counts, and relationships between tables. This allows for tailored data generation based on specific needs.
The List Field Types endpoint provides a comprehensive list of over 50 field types available for data generation, including uuid, email, phone, address, and price, enabling users to select appropriate data formats for their schemas.
Users can utilize the returned data by integrating it into their development or testing environments, populating databases for QA testing, or simulating user interactions in demo environments with realistic data.
The MockHero API generates synthetic data using algorithms that create realistic entries based on defined schemas. The data is not sourced from real-world databases, ensuring privacy and compliance.
Users should implement error handling in their applications to manage partial or empty results. This can include checking for the presence of expected fields and providing fallback data or user notifications when necessary.
To obtain your API key, you first need to sign in to your account and subscribe to the API you want to use. Once subscribed, go to your Profile, open the Subscription section, and select the specific API. Your API key will be available there and can be used to authenticate your requests.
You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.
If you don’t cancel before the 7th day, your free trial will end automatically and your subscription will switch to a paid plan under the same plan you originally subscribed to, meaning you will be charged and gain access to the API calls included in that plan.
The free trial ends when you reach 50 API requests or after 7 days, whichever comes first.
No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.
Yes, we offer a 7-day free trial that allows you to make up to 50 API calls at no cost, so you can test our APIs without any commitment.
Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.
Please have a look at our Refund Policy: https://zylalabs.com/terms#refund
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