P402 Router | x402 Payment Infrastructure

P402 Router | x402 Payment Infrastructure Product Information

What is P402 Router | x402 Payment Infrastructure?

The P402 Router is an advanced routing control plane built to manage and scale x402 (HTTP 402 Payment Required) payments for paid endpoints and agent stacks. It resolves fragmentation and instability within the x402 ecosystem by acting as an intermediary between paid endpoints and payment facilitators. The Router assesses incoming requests, chooses the most suitable payment acceptance option, directs verification and settlement, and applies essential policies such as spending controls and rate limits. It enables trustless micropayment settlement via USDC and USDT on the Base blockchain with a low, straightforward 1% fee, positioning it as an excellent solution for high-volume, pay-per-call APIs and agent-to-agent transactions.

How to use P402 Router | x402 Payment Infrastructure?

To utilize the P402 Router, integrate it between your paid endpoints and payment facilitators. The process follows the standard x402 flow, enhanced by the Router's management capabilities: 1. The server responds with an HTTP 402 status and the PAYMENT-REQUIRED header (which specifies the payment details). 2. The buyer (typically an agent) retries the request with the PAYMENT-SIGNATURE header (containing the signed payment payload). 3. The Router directs verification and settlement through the optimal facilitator, logs a detailed DecisionTrace, enforces policies (like budgets and caps), and finalizes the payment in USDC/USDT on the Base blockchain. To gain access, you must submit a 'Request Access' form to join the router validation network.

P402 Router | x402 Payment Infrastructure's Core Features

Smart Routing: Selects the best facilitator based on health, cost, and policy, with built-in failover support.

Spend Controls: Enforces per-buyer budgets, rate limits (RPM), route caps, and denial rules.

x402 Payment Settlement: Routes, verifies, and settles USDC/USDT payments on the Base blockchain with a flat 1% fee.

Observability & Tracing: Delivers a DecisionTrace timeline for every payment attempt, tracking conversion success and failure reasons.

Bazaar Overlays: Publishes machine-readable metadata linked to real-time health status for endpoint discovery.

P402 Router | x402 Payment Infrastructure's Use Cases

Monetizing Pay-per-call APIs by metering individual requests, eliminating dependency on subscriptions.

Implementing MCP (Model Context Protocol) servers to charge per tool invocation.

Enabling agent-to-agent commerce where policies control spending and domain access.

Creating Self-Healing Data Pipelines where agents automatically pay for premium access upon encountering rate limits (429 errors).

Internal chargeback systems for managing payments between services across different teams.

FAQ from P402 Router | x402 Payment Infrastructure

I still get a 402 error after attaching the payment header. Why?

Possible causes include: 1) Using the legacy X-PAYMENT header instead of PAYMENT-SIGNATURE. 2) An invalid signature. 3) The requested payment amount is too low. 4) The buyer's address has insufficient USDC or has been flagged by KYT (Know Your Transaction) checks.

What does Bazaar do?

Bazaar functions as a discovery layer, cataloguing payable endpoints with machine-readable metadata so developers and agents can find accurate pricing and routing details.

Are there different facilitators in the x402 ecosystem?

Yes. The ecosystem supports multiple facilitators, which differ in network support, accepted tokens, fee structures, and feature sets.

P402 Router | x402 Payment Infrastructure Support Email & Customer service contact & Refund contact etc.

For more contact options, visit the contact us page(https://www.p402.io/get-access)

P402 Router | x402 Payment Infrastructure Screenshot