Mock Data Generator
Generate realistic fake data with 50+ field types, output as JSON, CSV, SQL, or XML.
POST
1 credit
/v1/mock-data
curl -X POST "https://devtools.toolkitapi.io/v1/mock-data" \
-H "Content-Type: application/json" \
-d '{
"fields": [
{"name": "id", "type": "sequence"},
{"name": "name", "type": "name"},
{"name": "email", "type": "email"},
{"name": "city", "type": "city"},
{"name": "price", "type": "price", "options": {"min": 10, "max": 500}}
],
"rows": 3,
"output_format": "json"
}'
import httpx
resp = httpx.post(
"https://devtools.toolkitapi.io/v1/mock-data",
json={
"fields": [
{"name": "id", "type": "sequence"},
{"name": "name", "type": "name"},
{"name": "email", "type": "email"},
{"name": "city", "type": "city"},
{"name": "price", "type": "price", "options": {"min": 10, "max": 500}}
],
"rows": 3,
"output_format": "json"
},
)
print(resp.json())const resp = await fetch("https://devtools.toolkitapi.io/v1/mock-data", {
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({
"fields": [
{"name": "id", "type": "sequence"},
{"name": "name", "type": "name"},
{"name": "email", "type": "email"},
{"name": "city", "type": "city"},
{"name": "price", "type": "price", "options": {"min": 10, "max": 500}}
],
"rows": 3,
"output_format": "json"
}),
});
const data = await resp.json();
console.log(data);# See curl example
Response
200 OK
{
"data": [
{"id": 1, "name": "Alice Johnson", "email": "[email protected]", "city": "Portland", "price": 249.99},
{"id": 2, "name": "Bob Smith", "email": "[email protected]", "city": "Seattle", "price": 87.50},
{"id": 3, "name": "Carol Davis", "email": "[email protected]", "city": "Denver", "price": 342.15}
],
"rows": 3,
"fields": 5
}Try It Live
Live Demo
Response
Description
Generate realistic fake data with 50+ field types, output as JSON, CSV, SQL, or XML.
How to Use
1
1. Define your `fields` — each with a `name`, `type`, and optional `options`. 2. Set `rows` (1–1000) and `output_format`. 3. Optionally set `locale`, `seed` for reproducibility, and `table_name` for SQL output.
About This Tool
Mock Data Generator creates realistic fake datasets with 50+ field types powered by Faker. Define your schema, set the row count, and get output in JSON, CSV, SQL INSERT statements, or XML.
Supports reproducible output via seed values, locale-specific data, nullable fields, and type-specific options for fine-grained control.
Why Use This Tool
- Test database seeding — Populate dev and staging databases with realistic fixtures via SQL output
- API load testing — Generate thousands of payload variants for stress tests
- UI prototyping — Feed mock JSON into frontends before the real API is ready
- Data migration dry-runs — Produce CSV samples shaped like your production schema
- Privacy-safe demos — Show your app with fake data that looks plausible but reveals nothing
Frequently Asked Questions
How do I get reproducible output?
Set the `seed` parameter to any integer. The same seed + same schema = identical output every time.
Can I generate data in other languages?
Yes — set `locale` to any Faker-supported locale like `de_DE`, `ja_JP`, `fr_FR`, `pt_BR`, etc.
How does the regex type work?
Pass a regex pattern in `options.pattern` (e.g. `[A-Z]{3}-\\d{4}`) and the generator will produce matching strings. Supports character classes, quantifiers, alternation, and groups.
Start using Mock Data Generator now
Get your free API key and make your first request in under a minute.