Trust layer · Verification · Agentic & offline payments
What is AffixIO?
AffixIO is the trust layer for the internet. One API for stateless verification, agentic payments, and offline payment checks—binary YES or NO, no PII stored. Built for developers, systems, and the future.
The trust layer, in practice
Trust means you get a clear, verifiable answer without handing over data you don't need to share. AffixIO runs as stateless zero-knowledge verification: you send an identifier and a rule (e.g. a circuit_id); we resolve against external data in real time and return a single binary result. No session, no identity store, no PII written to disk. That's the trust layer—one decision endpoint for eligibility, payments, and verification.
The API at api.affix-io.com is documented (OpenAPI), auditable, and built for compliance: government, fintech, and zero-data designs. No cardholder or other PII is stored, so PCI scope stays minimal. The same pipeline powers agentic payments (ZK on the edge, double-spend prevention) and offline payment verification at the terminal—no PII on device.
What the API provides
Everything api.affix-io.com can factually deliver today: verification, agentic and offline payments, and compliance-friendly infrastructure.
Binary eligibility verification
One endpoint: send identifier + circuit_id, receive eligible (true/false) and data_retained: null. No PII stored. Real-time resolution against external data.
Agentic payments
ZK proofs on the edge, offline-capable proofs, double-spend prevention, and ZOD-style validation for autonomous and M2M flows. Built for agentic and AI-driven payment use cases.
Offline payment verification
Verify at the terminal or edge: stateless checks, no PII on device. Suited for offline or low-connectivity environments while keeping PCI-DSS and data-minimization in mind.
Terminal / edge · zero-data scope
Any identifier
NFC, biometric, QR, or other pseudonymised/hashed identifiers. One unified API; the circuit resolves against the right data source for the rule.
GET /v1/circuits · circuit_id
Compliance & resilience
Government and fintech-friendly design. Quantum-resilient identity options. No PII repository—minimal breach surface and data-minimization by design.
GDPR · PCI · data minimization
Health & demo
Service health for integrations: GET /health. Free demo key to try the API without signup: POST /api/demo-key.
Built for now and the future
AffixIO is built for today's integrations and tomorrow's stack: internal tooling, developer APIs, edge and offline scenarios, and agentic or AGI-driven workflows. The same stateless, binary verification model works for human-driven apps and autonomous agents—no session state, no PII store, so it's safe for M2M and AI-orchestrated flows. We're focused on a trust layer that stays useful as systems and agents evolve.
Who we are
The people behind the trust layer.
Kris & Becca Richens
Tech enthusiasts who love math and tech. We built AffixIO to be the trust layer the internet needs—stateless, binary, and privacy-preserving. Two late-age teenagers and a cat called Milo round out the team.
Milo does not write code but supports the mission from the sofa.
Quick answers
What is AffixIO, what does the API provide, and who built it.
What is AffixIO?
AffixIO is a trust layer for the internet. It provides stateless zero-knowledge verification, agentic payments, offline payment verification, and binary eligibility checks via api.affix-io.com. No PII is stored.
What does the AffixIO API provide?
Binary eligibility verification (POST /v1/verify), circuit listing (GET /v1/circuits), health checks, agentic payment flows with ZK on the edge and double-spend prevention, and offline payment verification at the terminal with no PII on device. See openapi.json for the full spec.
Who built AffixIO?
Kris and Becca Richens—tech enthusiasts who love math and tech, with two late-age teenagers and a cat called Milo.
Get API access
Use the trust layer in your product: verification, agentic payments, offline checks. Binary outcomes only; no PII.
Contact our team Contact page