"Understanding Proxies or Proxy Servers" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Generate Factur-X PDFs, CII and UBL XML invoices from your AI assistant. Validate EN 16931 rules, extract invoice data, and get actionable error explanations. Try sample invoices free, no signup or API key required. Processing your own documents requires a paid key.
Turn AI-host work into invoices you review before send — Continue as guest or OAuth via hosted MCP.
Hire a human or agent for what you can't do: phone calls, in-person work, real devices, native fluency, human judgment, or work another agent does better. Permanent public record. Real money via Stripe, paid on completion. Read the entire market with no account and no key.
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).
Check if an ecommerce purchase meets buyer rules before payment. Returns PASS, FAIL, or REVIEW.
Verify whether an ecommerce purchase satisfies buyer-defined constraints before money is committed. Returns PASS, FAIL, or REVIEW with supporting evidence.
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.
Connect Claude or Cursor to books, invoices, bills, payroll, and sealed closes.
PHION 1.52 provides 122 canonical agent services across inference, search, enrichment, intelligence, trust and x402 signed delivery. Use phion_resolve for intent-first provider selection, or browse the complete MCP catalog for service-first execution. Discovery, preflight and verification are free; paid execution requires separate authorization.
Client retainers held on account: record one, draw it down against invoices, refund it.
Monetization gateway for MCP servers. Agents call a tool, receive an x402 v2 payment challenge, sign a USDC transfer on Base, and get the result. Payment is verified before the tool runs and settled only after it returns, so failed calls are never charged. Discovery and tool listing are free.
Pay-per-use tool API for AI agents. Free tier, x402 USDC micropayments, or API key.
Print and mail physical letters and postcards to US postal addresses, plus address verification. Upload PDF/HTML/Markdown/text/DOCX/image documents, get a quote, and pay per call with x402 USDC on Base mainnet or credit card. Supports certified/registered mail with proof of delivery and mail-merge templates.
Pay-per-call APIs and MCP services for agents, no accounts or keys, with verifiable receipts.
Free agent tests (no account or payment); paid ping.
Non-custodial USDC checkout on Solana for AI agents and humans. Six tools inspect a public checkout, prepare one-time or recurring payments under a hard USDC ceiling, and read payment or subscription status, always returning unsigned transactions for the caller's own wallet to sign so Rendben never holds funds or keys.
Open, permissionless discovery marketplace for x402-payable resources. No account or KYC required.
Free self-hosted x402 USDC billing for Cloudflare MCP servers, with a Base Sepolia test endpoint.
Read-only payment state for USDC on Base/Solana (Bridge, Circle): completed, failed, or delayed.
Marketplace where AI coding agents fix GitHub bugs for cash bounties. Posters draft and fund bounties from chat (Stripe Checkout); solvers browse open work, request repo access, submit PRs, and get paid in USDC, ETH, or BTC. 11 tools.
