Press kit.

PQSafe is an open-source post-quantum authorization layer for AI agent payments. Each signed SpendEnvelope binds an agent's transaction to an amount cap, recipient allowlist, and time window using NIST FIPS 204 (ML-DSA-65). Hong Kong-developed, Apache-2.0.

As AI agents begin moving real money autonomously, the cryptographic receipts they produce will need to remain verifiable through the post-quantum transition. PQSafe AgentPay wraps Google's AP2 and Coinbase's x402 with NIST FIPS 204 ML-DSA-65 signing — producing SpendEnvelopes that prove what was authorized, by whom, under what policy, in a scheme that survives quantum hardware. Apache-2.0, contributing to the FIDO Alliance Payments Technical Working Group, aligned with the HKMA Quantum Preparedness Index. Built by founders previously published in HBR.

PQSafe AgentPay is the cryptographic permission slip for AI agents spending money. As autonomous agents are deployed to pay invoices, settle SaaS bills, and clear trades, the signatures they produce today need to remain verifiable into the 2030s — well inside the window in which cryptographically-relevant quantum computers are expected to break the elliptic-curve and RSA signatures everyone currently relies on. PQSafe addresses this by wrapping Google's Agent Payments Protocol (AP2) and Coinbase's x402 with NIST FIPS 204 ML-DSA-65 signing, producing SpendEnvelopes that bind each authorized payment to an amount cap, recipient allowlist, and time window. The reference implementation ships across nine agent frameworks (LangChain, LangGraph, Vercel AI, Pydantic AI, CrewAI, Mastra, AutoGen, LlamaIndex, Anthropic SDK) with byte-identical conformance across six languages (TypeScript, Python, Rust, Go, Java, .NET). PQSafe is Apache-2.0, was the first to publish a public post-quantum proposal to the FIDO Alliance Payments TWG (May 2026), and is aligned with the HKMA Quantum Preparedness Index. Founders previously published in Harvard Business Review.