PNTR examples

Runnable examples for PNTR: free *.pntr.dev subdomains with DNS management, catch-all test email, webhook capture, an API, CLI, and MCP integration.

These examples are deliberately small. Each one identifies the boundary it tests and the production behavior it does not replace.

Examples

Example	What it demonstrates	Offline verification
Stripe webhook + Express	Inspect a Stripe sandbox delivery with PNTR, then verify the signature in an Express handler	Generates a signed fixture locally and tests valid, invalid, and missing signatures
Playwright email/OTP	Give each test a unique address, poll the PNTR email API, and submit a labeled OTP	Uses a local fake PNTR API; no browser or live credentials required
MCP prompts	Bounded prompts for creating capture endpoints and reading test email	Prompts name the allowed actions and protect against untrusted captured content

Start here

git clone https://github.com/oddunits/pntr-examples.git
cd pntr-examples

cd stripe-webhook-express
npm install
npm test

Each example has its own dependencies and README. Installing one example does not install the others.

Safety

• Use Stripe sandboxes and synthetic users.
• Copy .env.example to .env locally, but never commit .env.
• Treat captured webhook bodies and email content as untrusted input.
• A PNTR capture endpoint acknowledges and stores a request. Its 200 response does not prove that your application processed the event.
• Keep Stripe signature verification on the unmodified request body.
• Use a unique test recipient and a bounded polling timeout in CI.
• Do not put production credentials, customer data, or real verification codes in fixtures or AI prompts.

PNTR resources

• Webhook tester
• Disposable email for developers
• MCP setup
• Documentation

License

MIT