Mockaroo
Mockaroo creates synthetic test data and mock back-end APIs for UI development.
What Mockaroo is
Mockaroo creates synthetic test data and mock back-end APIs for UI development. Its data generator supports JSON, CSV, tab-separated text, custom-delimited text, SQL, and XML. Users can select from more than 100 built-in data types, upload reference data, or define types through the formula API. Mock APIs can connect request parameters to schemas and return dynamic or static data, or simulate errors. Both APIs require an API key, supplied as a query parameter or an X-API-Key header. The Free plan allows 1,000 rows per file and 200 API requests per day; Silver costs $60 a year, and Gold costs $500 a year. Synchronous API responses are capped at 5,000 records on every plan, while background generation requires a paid plan. Enterprise costs $7,500 a year and is distributed as a Docker image for private cloud or datacenter deployment. Mockaroo is aimed at developers and testers, including front-end developers working before a back end is ready.
Good
- Supports six listed API output formats.
- Offers more than 100 built-in data types.
- Mock APIs can simulate errors or return static data.
- Enterprise offers private-cloud or datacenter deployment.
Watch out
- Free plan is limited to 200 API requests daily.
- Synchronous API responses stop at 5,000 records.
- Background generation requires a paid plan.
Who it suits
Mockaroo suits developers and testers who need realistic sample records or mock APIs. Front-end developers can use it while a back end is not yet ready.
Verdict
Mockaroo combines synthetic data generation with API mocking and several output formats. Consider the request and response caps, especially if your workflow needs larger synchronous responses or background generation.
Plans and prices
From Mockaroo's own pricing page, checked 2 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 1,000 rows/file · unlimited browser downloads · 200 API requests/day · 1x speed · all features · hosted on mockaroo.com |
| Silver | $60 a year | 100,000 rows/file · unlimited browser downloads · 1M API records/day · 8x speed · all features · hosted on mockaroo.com · $60/year |
| Gold | $500 a year | 10M rows/file · unlimited browser downloads · 10M API records/day · 8x speed · all features · hosted on mockaroo.com · $500/year |
| Enterprise | $7,500 a year | Unlimited data and users · private cloud or datacenter · Docker image · unlimited API calls · 8x speed or more · $7500/year |
The facts
Each one read from Mockaroo's own pages, with the date it was checked.
What it does
- API authentication
- Both Mockaroo APIs require an API key passed as a query parameter or an X-API-Key request header.checked 2 Oct 2026
- API limits
- The documentation lists daily API limits of 200 requests for Free, 1 million records for Silver, and 10 million records for Gold.checked 2 Oct 2026
- API mocking
- Mock APIs can map request parameters to schemas, generate dynamic data, simulate errors, or return static data.checked 2 Oct 2026
- Data types
- The Mock APIs page says users can choose from more than 100 built-in data types, upload reference data, or build data types with the formula API.checked 2 Oct 2026
- Deployment
- Mockaroo Enterprise is distributed as a Docker image for deployment in a private cloud or datacenter.checked 2 Oct 2026
- Integrations
- The API documentation identifies an officially supported Node.js client and lists C# client libraries mockaroo.api and NMockaroo.checked 2 Oct 2026
- Intended users
- Mockaroo describes its use for developers and testers who need realistic test data, and for front-end developers working before a back end is ready.checked 2 Oct 2026
- Notable limit
- The Generate API documentation says synchronous responses are limited to 5,000 records regardless of plan; background generation requires a paid plan.checked 2 Oct 2026
- Output formats
- The Generate API supports JSON, CSV, tab-separated text, custom-delimited text, SQL, and XML output.checked 2 Oct 2026
- Purpose
- Mockaroo generates realistic test data and can create mock back-end APIs for UI development.checked 2 Oct 2026
- Security
- Mockaroo's privacy policy says sensitive information submitted through the site is encrypted in transit and that access to personal information is limited to employees who need it for their jobs.checked 2 Oct 2026
- Support
- Mockaroo directs users with questions to its Community Forum so answers can benefit everyone.checked 2 Oct 2026
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