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Best Setup to Build a REST API with Postgres and Tests

Setuproll editorial@setuproll
93.0Overall score

An Opus 5 setup that reasons about your schema first, then writes endpoints with an integration test for every route before it calls the job done. Built for backend devs who want a Postgres-backed API that actually has test coverage and clean migrations.

93.0Score
5Components

Get this build

Export
terminal
claude mcp add postgres -- npx @modelcontextprotocol/server-postgres

What gets written

  • CLAUDE.md
  • .claude/agents/schema-designer.md
  • .claude/agents/endpoint-implementer.md
  • .claude/agents/integration-tester.md
  • .mcp.json

Components

Model

  • Claude Opus 5

MCP servers

  • postgres
  • github
  • filesystem
  • sentry

Stack

  • NestJS or FastAPI
  • Prisma or SQLAlchemy
  • Vitest or pytest

Subagents

  • schema-designer
  • endpoint-implementer
  • integration-tester

How it works

  • Postgres MCP lets it inspect the live schema before writing handlers
  • schema-designer drafts tables and a reversible migration
  • Each endpoint gets an integration test that hits a real test database
  • Stop hook runs the full suite and a migration dry-run before finishing

Summary

An Opus 5 setup that reasons about your schema first, then writes endpoints with an integration test for every route before it calls the job done. Built for backend devs who want a Postgres-backed API that actually has test coverage and clean migrations.

93.0 score

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