Claude Code vs ReplitComparisonUpdated 2026-03-16
SUMMARY
Claude Code (CLI) uses markdown configuration while Replit (Platform) uses markdown. They differ on 6 of 11 compared features. Both tools provide AI-assisted development but take different approaches to project configuration.
FEATURE COMPARISON
| Feature | Claude Code | Replit |
|---|---|---|
| Config format | markdown | markdown |
| Hierarchy support | ✓ | ✗ |
| Global config | ✓ | ✗ |
| Project config | ✓ | ✓ |
| Subdirectory scoping | ✓ | ✗ |
| File inclusion / imports | ✓ | ✗ |
| Ignore file | .claudeignore | ✗ |
| IDE integration | CLI | Platform |
| Schema / structure | Free-form (Markdown) | Free-form (Markdown) |
| Git committed | ✓ | ✓ |
| Encoding | UTF-8 | UTF-8 |
FILE MAPPING
SIDE-BY-SIDE CODE SAMPLES
Claude Code
CLAUDE.md
markdown
# Project Name
> TypeScript + React monorepo. Deployed on Vercel.
## Code Style
- TypeScript strict mode — no `any`, no `ts-ignore`
- Named exports only (no default exports)
- Prefer functional patterns: map/filter/reduce over for-loops
- Error handling: use Result<T, E> from `src/lib/result.ts`
## Architecture
- `src/routes/` — Route handlers (thin layer, delegates to services)
- `src/services/` — Business logic, one file per domain entity
- `src/db/` — Drizzle ORM schema and query helpers
- `src/lib/` — Shared utilities (logger, result type, validation)
## Commands
```bash
pnpm install # Install dependencies
pnpm dev # Start dev server (port 3000)
pnpm test # Run Vitest suite
pnpm test:e2e # Run Playwright tests
pnpm lint # ESLint + Prettier check
pnpm db:migrate # Run pending Drizzle migrations
```
## Git Conventions
- Conventional Commits: `feat:`, `fix:`, `chore:`, `docs:`
- Branch naming: `feat/short-description`, `fix/issue-number`
- Squash merge to main; delete branches after merge
## Notes
- The `src/legacy/` directory is being migrated. Do not add new code there.
- All dates are stored as UTC. Never use local time.
@docs/api-patterns.md
@docs/database-conventions.md
Replit
replit.md
markdown
# My Project
## Overview
This is a Next.js e-commerce storefront with Stripe payments, NextAuth
authentication, and a PostgreSQL database via Prisma ORM.
## Tech Stack
- Framework: Next.js 14 (App Router, server components by default)
- Database: PostgreSQL with Prisma ORM
- Auth: NextAuth.js with GitHub and Google providers
- Payments: Stripe Checkout and webhooks
- Styling: Tailwind CSS with shadcn/ui components
## Development Phase
Currently building the product catalog and cart system. Authentication
and payment flows are complete. Next up: order history and admin dashboard.
## Code Style
- TypeScript strict mode enabled
- Prefer server components; use "use client" only when needed
- Use server actions for mutations (app/actions/)
- Validate all inputs with Zod schemas
## Commands
- `npm run dev` — start development server on port 3000
- `npm run build` — production build
- `npm run db:push` — push Prisma schema to database
- `npm run db:seed` — seed database with sample data
- `npm test` — run Jest test suite
## External Resources
- Design system: https://ui.shadcn.com
- API docs: Stripe API at https://stripe.com/docs/api
KEY DIFFERENCES
Claude Code: Supported. Replit: Not supported.
Claude Code: Supported. Replit: Not supported.
Claude Code: Supported. Replit: Not supported.
Claude Code: Supported. Replit: Not supported.
Claude Code: .claudeignore. Replit: Not supported.
Claude Code: CLI. Replit: Platform.
WHICH SHOULD I USE?
Choose based on your IDE/CLI preference. If you use Claude Code, configure CLAUDE.md. If you use Replit, configure replit.md. Many projects include config files for multiple tools so each team member can use their preferred editor.
PORTABILITY TIP
sync-instructions.sh
bash
# Maintain a single source of truth:
cp AI-INSTRUCTIONS.md CLAUDE.md
cp AI-INSTRUCTIONS.md .cursorrules
cp AI-INSTRUCTIONS.md AGENTS.md
SEE ALSO
Tool pages:
agentconfig.ing2026-03-16COMPARE(1)