x402
HTTP 402 Payment Required — the native web standard for machine payments.
- Native HTTP integration
- Facilitator-agnostic
- Works with any EVM chain
Cross-facilitator observability for x402, MPP & AP2 payments. Track every transaction, reconcile on-chain, monetize your endpoints — all without ever touching funds or keys.
x402, MPP, AP2 — unified observability above any facilitator. No vendor lock-in.
HTTP 402 Payment Required — the native web standard for machine payments.
Multi-Party Payments — session-based payments for complex multi-agent workflows.
Agent Payment Protocol v2 — recurring mandates, dispute resolution, enterprise-grade.
We sit above the facilitator layer — aggregating, reconciling, and scoring across all of them.
Don't see yours? Request a facilitator integration — we add new ones weekly.
From prototype to platform — everything you need to ship, monitor, and monetize agent payments.
Live dashboard with WebSocket updates. See every payment event across all facilitators the moment it happens.
Automatic verification against Ethereum, Base, Arbitrum, Polygon + more. Never trust the facilitator — verify on-chain.
Hard limits per agent, session, or mandate. Human-in-the-loop approval for large payments — before they settle.
List your x402/MPP/AP2 endpoints in the neutral directory. Buyers discover by quality score — you get paid automatically.
VAT calculation, fiat invoicing, expense categorization, audit-ready exports — built for finance teams.
Resell Harpd as your own observability layer. Custom domain, branding, partner revenue share — your customers never know we exist.
Discover, compare, and monetize agent-payable endpoints. Quality scored on real usage across all Harpd tenants.
Real-time weather data for any coordinate. 99.9% uptime, 200ms median latency.
Distributed LLM inference with session-based billing. Supports Llama-3, Mixtral, custom models.
Automated KYC/AML checks for agent onboarding. Mandate-based recurring verification.
Join 100+ teams building on Harpd. Free tier includes 10K events/month — no credit card required.
Questions? Talk to our team or join Discord