"An open-source relational database management system" matching MCP connectors:

Enumerate and inspect PubFi capabilities, then execute an exact selected route.

Measured share of answer for 24 crypto and Web3 brands. An open dataset, not an audit of your site.

Real-time crypto market intelligence for AI agents. Live price, funding rate, open interest, buy/sell ratio, fear/greed, orderflow, and OHLCV history across 20 exchanges and 24 tokens. Address risk scoring included.

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.

MCP server for the EmblemAI AgentWallet. Exposes tools for token swaps, DeFi yield farming, liquidity management, portfolio tracking, market research, and memecoin discovery across Solana, Ethereum, Base, BSC, Polygon, Hedera, and Bitcoin. Backed by Agent Hustle (agenthustle.ai) for routing and execution. OAuth 2.0 + PKCE for interactive agents; API key and x402 micropayments also supported.

Adversarial verification for AI agents - pay an independent skeptic per verdict in USDC via x402.

Autonomous research agent that pays every source it cites in USDC on Arc via x402 micropayments.

Quant tools + an NFL fantasy draft assistant for AI agents — Kalshi & Polymarket EV, edge, ADP.

Screen an Ethereum address or ENS name for on-chain reputation risk, sanctions, and reasoning.

Free crypto futures data: open interest, funding, long/short, liquidations, volume. No API key.

No-KYC offshore hosting an AI agent runs end-to-end: no-email signup, crypto, domain, VPS, deploy.

Real-time risk-weighted USDC lending APY across Aave, Compound, Morpho, Moonwell, Euler and Fluid on Base. Every reading tagged with its data source (onchain/api/defillama). Pay-per-call via x402, $0.01 USDC, 3 free calls/day.

Hyperliquid perp market data for LLMs: OHLCV, funding, open interest, positioning & forecasts.

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

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.

Catalog of 370+ open-source AI-agent harnesses. Search, list your own, earn USDC tips via x402.

Monetize your MCP server or CLI: live OpenCrater network stats + how maintainers earn USDC.

Free Lightning faucet MCP — agents register, get an inbound channel, bootstrap an LDK node.

Stocks, crypto, FX, and portfolio math in one tool — no per-source API juggling.

AI agent banking - fiat and crypto wallet management. Send payments, buy/sell crypto, fund via banks/PayShap/cards, withdraw globally. Virtual SEPA/ACH accounts for fiat on-ramps.