AsterPay

• Name: AsterPay
• URL: https://asterpay.io/
• Category: x402 facilitator / agent-payment trust middleware
• Tags: ethereum-ecosystem
• Summary: AsterPay is trust-and-settlement middleware around agent payments. The live part is x402/MPP facilitation plus scoring and screening. The EUR off-ramp story still looks more announced than delivered.
• What it does:
  • Exposes free and paid APIs for agent trust scoring, ERC-8004 verification, tiering, deep analysis, market data, utility functions, settlement estimates, and facilitator operations
  • Positions itself as a trust layer for AI-agent commerce with KYA scoring, sanctions/AML screening, transaction limits by trust tier, and optional escrow/refund routing through x402r
  • Accepts both x402 and MPP-style payment flows and advertises compatibility with AP2, ERC-8004, and MCP-oriented agent tooling
  • Markets stablecoin-to-EUR settlement via SEPA Instant so merchants can receive fiat to a bank account while customer agents pay in stablecoins
  • Publishes unusually agent-native materials including a SKILL.md, discovery endpoints, Swagger/OpenAPI docs, and an MCP install path
• Key claims:
  • The homepage says AsterPay is the “only EUR-native x402 facilitator,” frames itself as the rail for AI agents paying in stablecoins while merchants receive EUR, and leans on MiCA-aligned positioning through licensed partners
  • The docs say AsterPay combines x402, MPP, AP2 compatibility, KYA scoring, ERC-8004 identity, sanctions screening, and settlement tooling into one stack
  • The docs also expose a broader surface than the homepage alone: free trust APIs, paid deep-analysis and market-data endpoints, utility routes, settlement quotes, and facilitator endpoints for x402 verification and settlement
  • The public trust-framework endpoint shows a layered model around verify, screen, score, settle, and comply, with score inputs such as wallet age, activity, sanctions screening, ERC-8004 identity, operator KYB, payment history, trust bond, and optional endpoint quality scoring
  • The public SKILL.md plus discovery manifests and MCP install path make it clear the project is being packaged for direct agent/runtime use, not just merchant dashboards
  • The facilitator supported endpoint is the important caveat: EUR settlement is still marked coming_soon and available: false, while on-chain USDC settlement is live now
  • The right read is therefore narrower than the homepage pitch: live on-chain facilitator plus trust middleware today, broader fiat-settlement promise still in rollout
• Whitepaper: No canonical standalone AsterPay whitepaper or litepaper surfaced in this pass. The clearest current source of truth was the official site, docs, public skill/install file, and live facilitator endpoints; see ../whitepapers/asterpay-primary-sources-2026-05-03.md.
• Sources:
  • https://asterpay.io/
  • https://asterpay.io/docs
  • https://asterpay.io/SKILL.md
  • https://x402.asterpay.io/v2/x402/supported
  • https://x402.asterpay.io/v1/agent/framework

Internal linkages

• Best reads: x402 for the paid-request rail and agent-payments-protocol for the commerce packaging above it.

• Last reviewed: 2026-06-02 UTC