p402.io valid
P402.io
AI infrastructure for payment processing, token metering, intelligent routing, distributed tracing, compliance auditing, and spend optimization. Production-grade. OpenAI-compatible. Settles micropayments on-chain.
- Authority
- 45 reach 0 · trust 5 · quality 25 · freshness 15
- Tier
- listed
- llms.txt
- https://p402.io/llms.txt
- llms-full.txt
- https://p402.io/llms-full.txt
- Sections
- 17
- Links
- 23
- Size
- 15023 bytes
- Country
- United States Hosting inference
- Hosting country
- United States Hosting inference
- Country evidence
- No published address evidence collected yet
- Categories
- Finance and payments
- For agents
- Documentation: developer or product docs worth reading, nothing to call
- First seen
- 2026-10-24T20:12:07.569Z
- Last checked
- 2026-10-24T20:12:11.339Z
- Badge
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-24T20:12:07.573Z. Cached copy · Source on p402.io
# P402.io
> AI infrastructure for payment processing, token metering, intelligent routing, distributed tracing, compliance auditing, and spend optimization. Production-grade. OpenAI-compatible. Settles micropayments on-chain.
P402 is the infrastructure layer that sits between AI applications and AI providers — the same way a payment network sits between merchants and banks. It handles routing, authorization, metering, settlement, and governance so your application makes one API call and P402 handles the rest.
---
## What P402 Does
**Payment Processing** — EIP-3009 gasless USDC settlement on Base L2. HTTP 402 becomes a machine-native payment primitive. Facilitators execute on-chain transfers; users pay zero gas.
**Token Metering** — Per-token AI billing tracked at request granularity. Every token counted, costed, and attributed to a department, project, or employee. Real-time dashboards. Budget enforcement. Overage alerts.
**Intelligent Routing** — 300+ models across 13 providers. Four routing modes: `cost`, `speed`, `quality`, `balanced`. Semantic cache cuts redundant LLM calls. Gemini-powered Protocol Economist optimizes routing decisions asynchronously.
**Distributed Tracing** — Every request traced end-to-end: model selected, provider latency, tokens used, cost incurred, cache hit/miss, routing decision, settlement result. SSE real-time trace viewer. Full audit trail in `traffic_events`.
**Compliance Auditing** — Immutable audit log for every AI interaction. Department attribution via `X-P402-Department`, `X-P402-Project`, `X-P402-Employee` headers. Proof-of-settlement receipts. HIPAA-ready audit trails for healthcare. Compliance bundles for legal. Verifiable spend records for finance.
**Spend Optimization** — AI-generated recommendations from Gemini Protocol Economist. Model mix analysis. Budget pacing (day-of-month projection). Semantic cache ROI. Provider cost comparisons. Enterprise dashboard with department budgets, top spenders, project breakdown.
---
## P402 Meter — Per-Token AI Billing
P402 Meter is the per-token billing system built on Tempo mainnet (chain 4217) using TIP-20 stablecoins (USDC.e, USDT0, cUSD, pathUSD, and 6 more).
**Key capabilities:**
- Per-request token counting with department/project/employee attribution
- Budget caps enforced in real time — requests blocked when budget exhausted
- On-chain settlement proofs (Tempo USDC.e, ERC-20 `transfer`)
- Full model mix analytics: which models each team is using and what it costs
- Semantic cache: identical or near-identical queries served from cache, cost = $0
- Enterprise dashboard: department budgets, top employees by spend, project breakdown, recent sessions, optimization findings
**Industry demos (live):**
- `/meter/healthcare` — HIPAA-grade audit trail, clinical AI compliance, department cost allocation
- `/meter/legal` — matter-level billing, privilege log, multi-jurisdictional routing, per-token invoicing
- `/meter/real-estate` — property-contextual AI,
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