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Snaplet Seed

Generate a coherent, schema-aware seed database for local development and tests.

Test Data & MocksOpen sourceSelf-hostableAI features
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What it is

Snaplet Seed reads your database schema and generates realistic seed data that respects relationships, constraints and types, so every developer and every CI run starts from a coherent dataset. It is aimed at removing the shared-database problem in local development.

Best for

TypeScript teams that want each developer and CI run to start from a clean, coherent database.

Where it is strong

  • Schema-aware generation means the data actually inserts and the app actually works.
  • Deterministic seeds make failing tests reproducible.
  • Good TypeScript ergonomics with Prisma and Drizzle.

Where it falls short

  • Effectively unmaintained: the last npm release (0.98.0) was July 2024 and the last commit to the default branch was August 2024, though the repo is not archived.
  • PostgreSQL-centric.
  • TypeScript ecosystem only.

Pricing

Free and open source

Open source

Free tier: Everything, self-hosted

What drives the bill: Free and MIT-licensed. Snaplet the company shut down in August 2024 and snaplet.dev no longer resolves; this is a community-held library, not a service.

Check current pricing on Supabase community (formerly Snaplet)’s site

Figures are indicative and were last reviewed August 2026. Vendors change pricing often; confirm before you commit.

Works with

PostgreSQLPrismaDrizzleGitHub Actions

What people who use Snaplet Seed say

No reviews of Snaplet Seed yet. If you have used it in anger, yours would be the first.

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