"Guidance on macOS System Administration" matching MCP connectors:

Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.

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

Verified merchants accepting agentic payments on Lightning/L402/BOLT12/USDT — search, verify, pay.

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

8 pay-per-call web intel tools over MCP. Free discovery, calls settle in USDC on Base (x402).

Agentic commerce network: discover sellers and products, negotiate, and pay USDC on Base via x402.

Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.

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

Pay-per-query x402 business intelligence on Base, settled in USDC via the native 402 payment flow.

Discover Algerian COD stores on Mystoq, or manage your own: products, prices, shipping/fraud tools.

Buy any of 24,000+ live x402 services with USDC on Base — the open marketplace for the agent economy.

Print & mail PDF/HTML/Markdown/text/DOCX/images to US addresses; pay per call in x402 USDC on Base.

Trust and payment layer for the agentic economy on the XRP Ledger.

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.

Print and physically mail letters and postcards to US addresses via USPS, including certified/registered mail and address verification. Paid per call in USDC on Base via the x402 protocol, no signup.

Pay-per-call JSON repair + JSON Schema validation for AI agents (USDC on Base, x402).

Multi-seller shopping for AI agents. Settle via Stripe MPP or x402 USDC on Base. Hosted.

Paid dev services for AI agents: code review, bug-fix, tests, docs, audits. USDC on Base x402.

Multi-seller shopping for AI agents. Settle via Stripe MPP or x402 USDC on Base. Hosted.

Business finance on Conta Simples, bank and card statements, corporate cards (list/block/unblock), c