Laying out the streets…STEP 1 OF 3

Seedfast · House #35,846

AI agent that seeds PostgreSQL with realistic test data

In the Databases and schemas neighborhood (Developer). In town since 10 Oct 2026.

Nobody has claimed this house yet. Tablif records every new product and gives it a house; when its owner claims it, the lights go on.

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What Tablif read on Seedfast's site

Seedfast describes itself as: “Seedfast: Synthetic Test Data Generator for Postgres”

What it is

Calls itself “Synthetic Test Data Generator”.

  • Calls itself: Synthetic Test Data Generator
“Synthetic Test Data Generator for Postgres”

Where it puts itself

Positions itself as an alternative to Mockaroo. Rules out “Production data never enters the workflow”. Publishes a comparison page.

  • Alternative to: Mockaroo
  • Says it will not: Production data never enters the workflow
“Seedfast reads your live schema and generates data that looks real and holds together across every table.”
“…vs Tonic Fabricate vs Mockaroo vs drizzle-seed All comparisons →”

What it costs

Monthly subscription. A free tier, free forever. 7 prices listed on its pages, from $0 to $180.

  • Monthly: yes
  • Free plan: free forever
  • Price: 7 prices, from $0 to $180
“Free is $0 a month with $5 of credits, takes no card and never expires. Basic is $16 with $32 of credits, Premium is $69 with $180.”
“A run on a schema of about 30 tables costs roughly $0.60 in credits.”

Who it sells to

Sells to businesses. Built for teams.

  • Sells to: businesses
  • Company size: teams
“Teams use it to develop against, to test and validate a whole system”

How it runs

A command-line tool. Runs locally and works offline. Distributed through the npm. AI is the core of the product.

  • Kind: cli
  • Runs where: on the device, offline
  • Distributed via: npm
  • AI role: core to the product
“Seedfast runs as an MCP server, so the AI agent in your IDE invokes it directly.”
“Seedfast reads your live schema and generates data that looks real and holds together across every table.”

What it works with

Names Amazon RDS, MySQL and 5 more on its pages.

  • Names: Amazon RDS · MySQL · Neon · +4
“PostgreSQL is supported today, including Supabase, Neon and Amazon RDS.”
“MySQL, Oracle and SQLite are in development.”

What it offers as proof

Live, no waitlist. Claims “188 Postgres schemas”. Try it without signing up. Publishes docs and a blog.

  • Number claimed: 188 Postgres schemas
  • Instant signup: yes
  • Trial asks for: nothing
“Start for free”
“Free is $0 a month with $5 of credits, takes no card and never expires.”

Sources

Tablif read these pages, last on 10 Oct 2026. Everything above is what the product says about itself; Tablif does not verify every claim.

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