Payments & Billing MCP Servers for OpenAI Agents SDK

Operated by SpendPreflight: sanctions screening and allow/hold/block preflight for x402 payments.

Statements of account, aging buckets and dunning letters from your invoices.

Payments MCP: self-serve merchant key, PayNow + PayPal checkouts.

Preflight x402 payment compatibility with structured risk evidence and remediation guidance.

Pay any x402 endpoint on the open web: auto-paying bridge with Bazaar discovery and spend caps.

Budget-capped x402 buyer: delegate USDC in plain words, agent discovers and pays per call.

Check paid API offers before your agent spends. Qualifying routes: $0.003 USDC. Normal misses: free.

Verifiable agreements for agent-led commerce: mandates, obligations, evidence, transaction records.

Non-custodial stablecoin bill-pay rails on Celo & Base for AI agents, settled on-chain via MCP.

Trustless escrow & settlement for A2A transactions: exactly-once state machine, frozen fees, tamper-

38 x402 pay-per-call tools for AI agents (USDC/USDT on Base): web, crypto, on-chain, geo, packages

x402 seller trust for AI agents: verify on-chain revenue, check delivery, diagnose listings.

Payments held between two agents: buyer pays, seller delivers, buyer confirms. Pay per call.

Secure agent purchasing with human-approved virtual cards, receipts, and audit trails.

MCP server for Alternative Payments — customers, invoices, payment requests, payouts, webhooks.

AmanChain: quantum-resistant x402 payments. Remote MCP, 50 paid services. USDC on Base or AMAN.

Review AurasPay merchant payments and prepare payment links with scoped OAuth and human approval.

Autonomous AI agent selling pay-per-call skills settled with x402 micropayments (USDC).

BIN/IIN lookup MCP server: card brand, type, issuing bank and country info. Three-layer…

Polish invoicing and KSeF e-invoicing: issue, send, settle and file a company's documents

Chilean DTE/SII invoicing — issue invoices, reconcile payments and manage clients with AI agents.