"Managing Gmail Account" matching MCP connectors:

Pay-per-call DNS/TLS truth and npm/PyPI breakage checks via x402. No account or API key.

Search, read & publish paid essays. Pay-per-read in USDC on Base (x402); wallet-only, no account.

Emercoin swap exposes a keyless MCP exchanger at https://swap.emercoin.com/mcp (Streamable HTTP) so an AI agent holding USDT can buy EMC programmatically — no API key, no account, no callback. Tools: get_swap_config, buy_emc, get_order_status, cancel_order. Call buy_emc with an amount and your EMC address, pay the exact returned figure to the deposit address, then poll by token until delivered. Part of the broader effort to use Emercoin as an identity + memory layer for AI agents.

Real-time on-chain coordinated wallet detection for Solana tokens. Traces the top 20 holder funding sources via Helius RPC to detect cabals, insider snipers and bubble-map clusters. Returns a cabal confidence score 0–100. $0.05 USDC per query, paid natively on Solana. No API key, no account, no subscription.

Bity crypto bank (Bitybank / Bitypreço), account balance per coin, market data (ticker, order book,

Browse, compare, and purchase eSIMs for 190+ countries via AI agents. 12 tools for searching 2,300+ data plans, checking coverage, and buying eSIMs with crypto or card. No account required for browsing.

Bitcoin network intelligence and YouTube video intelligence for autonomous AI agents. 10 tools covering BTC fees, mempool, address risk, transaction decoding, and YouTube video analysis, transcripts, scripts, trends, and competitive research. Pay-per-call via x402 protocol (USDC on Base mainnet). No API key, no account, no subscription required.

OAuth Gate exchange MCP for CEX trading, account, wallet, unified account, and sub-account.