P402 Router sits between your paid endpoints and facilitators to route, verify, and settle x402 payments at scale. It enforces spend controls, settles in USDC, and publishes Bazaar-ready metadata.

The P402 Router is a sophisticated AI payment routing infrastructure designed for developers and businesses that utilize multiple AI models and require efficient, cost-effective, and transparent transaction handling. It functions as a smart intermediary that automatically directs each AI API request to the most optimal provider based on configurable parameters like cost, speed, or quality, while handling the entire payment and settlement process seamlessly on-chain. This system is built for scale, enabling applications to leverage a vast model ecosystem without managing individual provider integrations or complex payment flows, thereby simplifying the operational overhead of running AI-powered services. Its core purpose is to reduce AI inference costs dramatically, ensure reliable execution, and provide complete visibility into every transaction through its integrated intelligence layer.

In the current landscape of AI development, managing costs and performance across a fragmented provider market presents a significant challenge. Developers often face vendor lock-in, unpredictable pricing, and the administrative burden of juggling multiple API keys and billing accounts. The pain point is particularly acute for applications requiring high volumes of AI calls, where even minor per-request savings compound into substantial expenses. Furthermore, traditional payment methods for these services lack transparency, create friction with gas fees, and fail to provide auditable trails for business or compliance needs. P402 Router directly addresses these issues by creating a unified, intelligent layer that abstracts away the complexity, offering a single endpoint and a consolidated, on-chain payment mechanism.

The first major feature group is AI Routing and Optimization. P402 Router provides a single OpenAI-compatible endpoint that connects to over 300 AI models from providers like Claude and Gemini. It intelligently routes each incoming request to the optimal model based on a user-selected mode, such as Cost, Speed, Quality, or Balanced. The system continuously evaluates the ecosystem to select the cheapest model that still meets the defined quality bar for the task. This process is fully automatic; developers simply change their base URL to P402's endpoint, and the routing logic takes over. Every routing decision is captured in a live trace, showing the original model, the routed model, the cost savings achieved, latency, and token usage, providing complete transparency into the optimization process.

The second major feature group is Gasless Payments and On-Chain Settlement. Built on Base Mainnet, P402 handles all payments using USDC and the EIP-3009 standard for gasless transfers. Users sign a single authorization, and a facilitator network executes the transaction, allowing end-users to pay zero gas fees. This results in sub-2-second settlement times with a 1% fee rate. Every request generates a verifiable on-chain receipt, enabling repeat access to services without repeated payments. The system's treasury is secured by a 3-of-5 multisig configuration with emergency pause capabilities, ensuring enterprise-grade security for all settled funds. This infrastructure is live in production, not on testnets, providing real payment rails for AI services.

P402 Router

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