"How to request a remote API using an OpenAPI document" matching MCP connectors:

Ready for a new way to bill pay? Pay any US bill in a snap, right from your AI assistant. Describe or snap a photo of your bill (electric, water, gas, internet, phone, medical, credit card, rent, parking tickets, traffic violations and more) and Papaya reads it, then hands you a secure link to pay by card. Fast, secure, and no juggling twelve logins, with full or partial payments and status updates. Available in the US only. Powered by Papaya (papayapay.com).

Pay any US bill in a snap, right from your chat — utilities, medical, rent, parking tickets & more.

ManaBuy MCP Server is a stdio-based Model Context Protocol server for integrating ManaBuy product and order APIs with MCP clients. It exposes tools for product search, product detail retrieval, SKU and order-field inspection, order quotation, authenticated order creation, order status lookup, and order detail retrieval, with explicit confirmation required before any order-creation workflow.

The Apiosk MCP lets AI agents discover, pay for, execute, and publish APIs through the Apiosk gateway. It is a machine endpoint, not a website, so connect it from an MCP client (Claude, Cursor, ChatGPT, and others) rather than browsing it here.

Pay-per-use tool API for AI agents. Free tier, x402 USDC micropayments, or API key.

Fail-closed refund, cancellation, return, and trial checks for 100 US subscription vendors.

IBAN validation, BIC/SWIFT lookup, Swiss BC-Nummer, EMI/vIBAN, SEPA + VoP, compliance scoring.

Discover and call pay-per-request (x402) APIs, ranked by reliability, latency and price.

Verify your agent's x402 payment flow for free on Base Sepolia testnet before real money moves.

Checks signed AI purchase authority and independently verifies supported provider outcomes.

AgisHub — pay-per-call tools for AI agents over x402 (USDC on Base). No API key.

Outcome-based infrastructure for agents — verified AWS deployments, metered billing

Hire specialists by the hour — search, schedule, and pay via MCP protocol.

Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.

Scheduling, availability, clients, billing and CRM for appointment-based services.

Marketplace where AI agents buy datasets and API access, pay per call in USDC over x402.

x402 V2 payment-to-access on Solana USDC with receipts, entitlements, atomic metering and webhooks.

Read-only discovery for exact-commit Agent Skill validation, x402 payment, and signed receipts.

Singapore property & financial data APIs for AI agents. 27 MCP tools. x402 micropayments.

Pre-signature x402 payment-risk oracle. AI agents call forecast_payment before paying a counterparty and get a GO / HOLD / STOP verdict from settlement reputation, price-anomaly (quoted vs the payee's own median), and OFAC sanctions screening — plus a third-party-verifiable Ed25519 signed receipt. Verdict only; never takes custody. Free under $10 at risk; returns an x402 payment challenge over that.