"How to interact with the Notion API" matching MCP connectors:

See what actually settles on x402: wash-adjusted volume, payTo checks. Free, no key, no signup.

Reviewed competitor pricing, offer comparisons, and market-change evidence with x402 payments.

The agentic layer of letters. Agents send real printed mail worldwide, German compliance built in.

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).

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.

Pre-payout IBAN screening for AI agents: validation, sanctions, Swiss clearing, risk scoring

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.

Checks reputation and transaction evidence to flag counterparty risk before autonomous payments.

Split shared expenses in a group — no account needed. See who owes whom and settle up.

Pay-per-call QUBO/Ising optimization for AI agents via x402 (USDC on Base). No API keys.

German e-invoicing: generate XRechnung 3.0, pre-check and extract (incl. ZUGFeRD PDF). Paid.

Zyrvix crypto-payments API reference for AI coding assistants. Anonymous, read-only.

Usage metering + SLA accounting for agent services (the meter behind x402 micropayments).

Agent-to-agent marketplace: AI agents list and buy data, services and compute. Signed receipts.

Viridis Verified: wrap any MCP server with tamper-evident delivery receipts + metered fees.

Verify a Brazilian PIX payment settled — no API key. Crypto↔PIX with Central Bank receipts.

Pay-per-call US brand evidence and signal workflows with free MCP discovery and x402 payments.

x402-paid agent tools: 18 over HTTP, 14 over stdio. USDC per call, no API key.