MockHero
Synthetic test data API. Generate realistic, relational data for any database schema.
What it does
156 field types across 15+ categories (identity, location, financial, temporal, and more)
Relational data — foreign keys just work. Orders reference real user IDs, reviews link to real products. One API call seeds your entire database.
3 input modes — structured schema, plain English prompt, or pre-built templates
Auto-locale — add a
countryenum field and names, emails, phones match each row's nationality. 22 locales supported.JSON, CSV, SQL output — Postgres, MySQL, SQLite dialects
Deterministic seeds — same seed + same schema = identical data every time
MCP server — use from Claude Desktop, Cursor, Windsurf, or any AI agent
Quick start
curl -X POST https://mockhero.dev/api/v1/generate \
-H "Authorization: Bearer mh_live_YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{
"tables": [
{
"name": "users",
"count": 50,
"fields": [
{ "name": "id", "type": "uuid" },
{ "name": "name", "type": "full_name" },
{ "name": "email", "type": "email" },
{ "name": "country", "type": "enum", "params": { "values": ["US", "DE", "FR", "JP"] } },
{ "name": "created_at", "type": "datetime" }
]
},
{
"name": "orders",
"count": 200,
"fields": [
{ "name": "id", "type": "uuid" },
{ "name": "user_id", "type": "ref", "params": { "table": "users", "field": "id" } },
{ "name": "total", "type": "price" },
{ "name": "status", "type": "enum", "params": { "values": ["pending", "shipped", "delivered"] } }
]
}
]
}'Or use plain English:
curl -X POST https://mockhero.dev/api/v1/generate \
-H "Authorization: Bearer mh_live_YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{ "prompt": "50 users with German names and 200 orders linked to them" }'Templates
Pre-built schemas for common patterns — no schema definition needed:
curl -X POST https://mockhero.dev/api/v1/generate \
-H "Authorization: Bearer mh_live_YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{ "template": "ecommerce", "scale": 2, "locale": "de" }'Available: ecommerce, blog, saas, social
MCP server
Use MockHero from AI agents via the Model Context Protocol:
npm install -g @mockherodev/mcp-serverSee @mockherodev/mcp-server for setup instructions.
Pricing
Free | Pro | Scale | |
Daily records | 1,000 | 50,000 | 500,000 |
Requests/min | 10 | 60 | 200 |
Price | $0 | $29/mo | $79/mo |
Tech stack
Next.js 15 (App Router)
Supabase (Postgres)
Clerk (Auth)
Polar (Billing)
Tailwind v4
License
MIT