SeedBase Test Data MCP server

@seedbase/client

Generate realistic, relationship-preserving, privacy-safe test data for your databases — and pull it straight into your local or CI database.

Seedbase lives on seedbase.dev: you model (or import) a schema there, generate datasets, and use this package to pull them into Postgres, MySQL, SQLite and more. Schema-aware, foreign-key-correct, reproducible by seed.

This is the Node.js client, a counterpart to the Python SDK.

Install

npm install @seedbase/client

Zero runtime dependencies — pure ESM, built on the native fetch of Node 18+.

Quickstart

import { SeedbaseClient } from "@seedbase/client";

// Token from the argument, $SEEDBASE_TOKEN, or ~/.seedbase/config.json
const client = new SeedbaseClient({ token: "dr_sk_..." });

// Trigger a generation and wait for it to finish
const gen = await client.generate(projectId, { seed: 42, wait: true });

// Download the result (Uint8Array)
const bytes = await client.download(gen.id, { format: "sql" });
import { writeFile } from "node:fs/promises";
await writeFile("dump.sql", bytes);

MCP server (Claude Code, Claude Desktop & friends)

This package ships seedbase-mcp — a zero-dependency Model Context Protocol server that lets AI assistants generate test data for you. Describe what you need ("fill my Shop project with MySQL test data") and the assistant drives SeedBase end-to-end through five tools:

Hosted (zero install) — point any Streamable-HTTP MCP client at https://seedbase.dev/mcp with an Authorization: Bearer drsk... header:

claude mcp add-json seedbase '{"type":"http","url":"https://seedbase.dev/mcp","headers":{"Authorization":"Bearer dr_sk_..."}}'

Local via Claude Code (stdio):

claude mcp add-json seedbase '{"type":"stdio","command":"npx","args":["-y","-p","@seedbase/client","seedbase-mcp"],"env":{"SEEDBASE_API_KEY":"dr_sk_..."}}'

Claude Desktop (claudedesktopconfig.json):

{
  "mcpServers": {
    "seedbase": {
      "command": "npx",
      "args": ["-y", "-p", "@seedbase/client", "seedbase-mcp"],
      "env": { "SEEDBASE_API_KEY": "dr_sk_..." }
    }
  }
}

Create a free account at seedbase.dev/register (no credit card), then create an API key under Settings → API keys. The free tier is enough to generate full, foreign-key-consistent datasets. The server is stdio-only, talks exclusively to https://seedbase.dev, and stores nothing locally.

Authentication

The token is resolved in this order:

1. The token option passed to the constructor.
2. The SEEDBASE_TOKEN environment variable.
3. The token field in ~/.seedbase/config.json (written by seedbase login).

API keys with the drsk prefix are sent as Authorization: Bearer ..., other tokens as Authorization: Token .... Get a key at seedbase.dev/settings?tab=api-keys.

API

Shortened. The full README is on GitHub.