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/12272/synthetic+data+mockhero+api/23018/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 realistic synthetic data based on the defined schema. This includes various fields such as names, emails, addresses, and more, structured according to the specified tables and relationships.
The response data is organized in a JSON format, with a main "data" object containing arrays for each defined table. For example, user data is returned as an array of user objects, each with fields like "id," "name," and "email."
Users can customize their data requests by defining parameters such as table names, column types, 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 built-in field types available for data generation, including UUIDs, emails, phone numbers, addresses, and more, enabling diverse dataset creation.
The Health Check endpoint returns fields such as "status" (indicating API health), "version" (showing the current API version), and "timestamp" (providing the last checked time), which help users assess API functionality.
Users can utilize the returned templates by selecting a pre-built schema that matches their use case, such as e-commerce or CRM, to quickly generate relevant synthetic data without needing to define the schema from scratch.
Data accuracy is maintained through schema-aware generation, ensuring that the synthetic data adheres to the defined relationships and constraints, thus mimicking realistic data patterns while preserving privacy.
Typical use cases include seeding development and staging databases, populating CI/CD test fixtures, load testing with realistic data, and creating demo environments for QA testing, enhancing overall development efficiency.
To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key 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.
The free trial lasts for 7 days and allows you to make up to 50 API requests.
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. If the API offers a free trial, you will see a "Free 7-Day Trial" option in its Pricing section. The trial lasts for 7 days and allows up to 50 API requests, enabling you to evaluate the API before subscribing to a paid plan.
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.
You can monitor your API usage through the response headers included with every request:
x-zyla-api-calls-monthly-used: Shows the total number of API requests you have used during the current billing period.
x-zyla-api-calls-monthly-remaining: Shows the number of API requests you have remaining for the current billing period.
Yes, you can cancel your subscription at any time. Simply go to the Pricing section of the API you're subscribed to and click the "Unsubscribe" button.
Please note that upgrades, downgrades, and cancellations take effect immediately. Once your subscription is canceled, access to the service will end immediately, regardless of any remaining API calls in your quota.
Please have a look at our Refund Policy: https://zylalabs.com/terms#refund
Service Level:
100%
Response Time:
142ms
Service Level:
100%
Response Time:
1,646ms
Service Level:
100%
Response Time:
1,531ms
Service Level:
100%
Response Time:
186ms
Service Level:
100%
Response Time:
1,451ms
Service Level:
100%
Response Time:
93ms
Service Level:
100%
Response Time:
898ms
Service Level:
100%
Response Time:
117ms
Service Level:
100%
Response Time:
194ms
Service Level:
100%
Response Time:
437ms