OpenPassport

Put bot checks behind a single call, not your users’ identities. Add OpenPassport to your sign-up, checkout, or posting flow by installing the client snippet and requesting a proof when an action looks risky. The widget runs a short, privacy-preserving check and returns a signed token bound to the session. Send that token to your backend and verify it with the server SDK or a simple REST call. On success, proceed; on failure, rate-limit or block. No personal data is needed, and sensitive signals stay on the device. Works in SPAs, traditional sites, and native mobile via a lightweight bridge.

Practical web workflow: initialize OpenPassport on load with your public key; listen for critical events (create account, submit order, publish content); invoke the check and await a proof; attach the proof to your API request; validate on the server (signature, expiry, audience, nonce); record the decision; continue or challenge again. Tie proofs to specific actions to thwart replay and CSRF. Use the dashboard to tune challenge difficulty, set token TTLs, and choose an in-line modal or redirect pattern. Optional webhooks notify you when proofs clear, so background jobs can resume.

For product teams, start with low-friction gates that deter scripted abuse: require a human check for the first post/comment, after five rapid sign-ups from one IP, or before redeeming a high-value coupon. Add checks to payout changes, bulk exports, and suspicious login patterns. Run experiments that show the check only when heuristics trip, then compare fraud, support load, and conversion. When attack traffic spikes, toggle a rule to elevate checks across affected surfaces without shipping code; roll it back as the spike subsides.

From an engineering and security view, handle the proof like a standard signed credential. Cache JWKS keys, constrain clock skew, and reject reused token IDs for a short window. Verify at the edge or inside middleware to minimize latency. Choose fail-open for low-risk flows (newsletter opt-ins) and fail-closed for sensitive ones (transfers). Ship with dry-run in staging to tune thresholds before going live. Localize the widget, support screen readers and keyboard-only users, and keep logs minimal to honor privacy and compliance expectations.