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P402.io

P402.io

Route, verify, and settle paid API calls with clear traces

Website p402.io
Overview

What it is

Most AI apps waste 70% of their budget. Wrong models. No caching. Payment fees that destroy micropayments. P402.shop: Compare 50+ AI APIs (GPT-5.2, Claude Opus 4.5, Gemini 3, more). Find the right model for your use case. See costs explode from 100 to 1M users. Free. P402.io: Accept micropayments without Stripe's $0.30 killing you. 1% flat fee. Built on x402—HTTP's payment standard, finally working. Vibe-coded apps break at scale. Optimized ones don't.

Intent

I need it when

Integrate multi-provider AI routing into existing OpenAI SDK code with minimal changes.

P402 provides an OpenAI-compatible endpoint. Users change one line (baseURL to https://p402.io/api/v2) and keep their existing SDK. Same interface, 300+ models, automatic routing. Supports Claude, Gemini, DeepSeek, and others via unified schema.

Monitor and enforce spending policies across a fleet of autonomous agents.

P402 provides AP2 cryptographic mandates that constrain per-agent spend limits, policy-linked approvals, and real-time audit trails. Enterprise tier includes multi-stage approvals, moderation queues, and signed evidence exports. Dashboard shows live cost tracking, savings analytics, and request-level attribution.

Establish on-chain identity and reputation for AI agents in a trustless marketplace.

P402 implements ERC-8004 on-chain agent identity (NFT-based registration), reputation scoring (0-100, payment-backed), and validation guards for high-value transactions. Agents accumulate trust through verified interactions; reputation feeds routing decisions and enables discovery in the Bazaar marketplace.

Reduce AI inference costs by automatically routing requests to the cheapest qualified model provider.

P402 routes each LLM request across 300+ models in real-time, selecting the lowest-cost provider that meets quality thresholds. Semantic caching eliminates redundant calls at zero cost. Users report ~20% savings on non-cached calls plus 25%+ savings from cache hits, totaling $20K+/month savings at $50K/month spend.

Enable autonomous AI agents to make micropayments for premium services without human approval.

P402 settles gasless USDC payments on Base via EIP-3009, allowing agents to pay for API calls, data, or services within cryptographic spending mandates (AP2). Agents sign once; P402 facilitator executes transfers with zero gas fees. Receipts enable reuse without re-payment.

Drop

Not a fit when

  • User needs traditional centralized payment processing without blockchain settlement; P402 requires USDC on Base L2 and EIP-3009 signatures.
  • User operates in jurisdictions where on-chain USDC payments or crypto settlement are restricted or prohibited.
  • User requires support for non-AI workloads; P402 is specifically designed for LLM routing and agent commerce.
  • User needs real-time support for legacy API providers outside the 300+ model ecosystem; P402 routes only to supported providers.
  • User cannot accept per-request payment overhead; P402 adds settlement latency and platform fees to every transaction.
  • User requires zero blockchain interaction or on-chain identity; P402 uses ERC-8004 on-chain reputation and Base mainnet settlement.
Commercials

Pricing

Freemium with tiered subscription. Free tier: 1% platform fee per settlement, no monthly charge. Pro tier: $499/month with 0.75% platform fee. Enterprise: custom volume-tiered rates. Escrow-protected payments: 2% flat fee across all tiers. View pricing