Summary
Connects Claude to MockHero's synthetic data API. Exposes operations to generate relational test datasets using 156 field types across identity, location, financial, and temporal categories. You can define schemas with foreign key relationships, use plain English prompts, or pull from pre-built templates like ecommerce or SaaS. Output comes as JSON, CSV, or SQL in Postgres, MySQL, or SQLite dialects. Auto-locale matching means if you add a country enum, names and phone numbers will match each row's nationality across 22 locales. Useful when you need to seed a staging database with realistic data that actually references itself correctly, or when prototyping APIs that need believable multi-table fixtures.
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one prompt install →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.
Hosted remote MCP endpoint for agent-first clients:
https://mockhero.dev/mcp/agent
This endpoint exposes estimate, loginless Polar checkout, checkout status, API key claim, schema detection, templates, and generation tools.
Local stdio MCP server for agents that run npm packages:
npm install -g @mockherodev/mcp-server
See @mockherodev/mcp-server for setup instructions.
Pricing
| Free | Pro | Scale | |
|---|---|---|---|
| Daily records | 500 | 100,000 | 1,000,000 |
| 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
Featured
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Configuration
MOCKHERO_API_KEY*secretYour MockHero API key (get one free at https://mockhero.dev)
Categories
Registryactive
Package@mockherodev/mcp-server
TransportSTDIO
AuthRequired
UpdatedMar 23, 2026
