Jev Structured Evaluation Brings Tool Selection and Payment Guardrails to x402 Agents

A two-part proposal applies TypeSafe's structured evaluation model Jev to x402 payment clients, using it for agent tool selection and pricing decisions, and as pre-payment guardrails that check for prompt injection and intent drift before funds are spent.

2026-09-20 ~ 2026-09-20 · 2 related posts

• Using Jev, a typed evaluation model, for x402 agent tool selection and payment guardrails — kleffew94 · 2026-09-20
• Three boolean Jev checks as payment safety guardrails for x402 clients — kleffew94 · 2026-09-20