vercel-labs/emulate

README EXCERPT

emulate Local drop-in replacement services for CI and no-network sandboxes. Fully stateful, production-fidelity API emulation. Not mocks. Quick Start All services start with sensible defaults. No config file needed: - Vercel on http://localhost:4000 - GitHub on http://localhost:4001 - Google on http://localhost:4002 - Slack on http://localhost:4003 - Apple on http://localhost:4004 - Microsoft on http://localhost:4005 - Okta on http://localhost:4006 - AWS on http://localhost:4007 - Resend on http://localhost:4008 - Stripe on http://localhost:4009 - MongoDB Atlas on http://localhost:4010 - Clerk on http://localhost:4011 - Linear on http://localhost:4012 - Twilio on http://localhost:4013 Stripe webhooks configured with a secret include a Stripe-Signature header signed over the timestamp and raw request body. Resend POST /emails and POST /emails/batch support 24-hour Idempotency-Key replay, returning the original email IDs without duplicate emails or webhooks. CLI Options Flag Default Description ------ --------- ------------- -p, --port 4000 Base port (auto-increments per service) -s, --service all Comma-separated services to enable --seed auto-detect Path to seed config (YAML or JSON…

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