"Capture The Flag (CTF) cybersecurity competitions and challenges" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Give your AI agent a spending limit: approval controls and single-use virtual cards.
Generate and validate SEPA ISO 20022 XML (pain.001, pain.008) and SWIFT MT103 payment messages.
Pay-per-action access to APIs and MCP tools over Lightning L402 and Base USDC x402.
Add pay-per-action access to APIs, MCP tools, automations, and digital resources using Bitcoin Lightning L402 or Base USDC x402. AIPP provides payment verification and direct-to-wallet settlement without subscriptions.
Synthetic-only transaction screening with evidence and ES256-signed decision receipts.
Reviewed competitor pricing, offer comparisons, and market-change evidence with x402 payments.
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).
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.
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.
Browse, price, configure and order custom-made blinds for South African windows. Instant ZAR pricing, cart, checkout and payment via Yoco or Ozow EFT. No authentication required.
PIX payments for Brazil: verify a settlement with no API key, or sell USDT/USDC for BRL over PIX.
Discover, pay for, execute, and publish APIs through Apiosk.
Verified directory for machine payments (x402 & MPP): check services and wallets before agents pay.
Agent-native commerce with trusted catalog, durable carts, and Stripe Checkout via MCP and UCP.
Pay-per-call APIs and MCP services for agents, no accounts or keys, with verifiable receipts.
Fail-closed refund, cancellation, return, and trial checks for 100 US subscription vendors.
SqueezeOS MCP for live machine discovery and x402-paid USDC APIs on Base.
IBAN validation, extraction, format specs and BIC/SWIFT lookup tools for AI assistants.
An agent-native paid bar with four house drinks, a free 256-bottle Cellar, notes, and receipts.
Inspect and validate an x402 endpoint before an autonomous agent spends USDC.
