"Projects that showcase advanced GitHub repository search techniques" matching MCP connectors:

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.

Universal pay-per-call tool API for AI agents. Web search, price feeds, hive memory, LLM routing, code sandbox. Free tier (10 calls/day, no signup). x402 payments on Base + Solana.

Real-time curated crypto news for AI agents with sentiment, recaps, and search.

Crypto positioning and macro intelligence for agents — the signal set a trading desk watches, delivered as structured JSON. Multi-venue perpetual funding and open interest across Binance, Bybit and OKX (largest-open-interest perp per venue, thin venues excluded), Ethereum exchange whale flows, Bitcoin network health, DeFi TVL and stablecoin supply, Fear & Greed, and BTC/ETH/USDT dominance as a risk-on/risk-off regime filter. Plus the macro backdrop that actually drives crypto: Fed funds rate, 2Y

Search and invoke real AI capabilities on modelmarket.dev. Free trial, then USDC on Base.

54+ pay-per-use AI & data tools for agents, payable in USDC via x402 on Solana — no API keys, no subscriptions. AI image, video, music and voice generation (cheaper than official APIs), web search, cited research reports, Claude Opus Q&A, crypto prices, page scraping, domain info and more. Pay only for what you call, straight from the agent wallet. Free directory tool lists all live endpoints.

Verified dev-error fixes sold per-lookup to AI agents on-chain. Free search; 3 free samples.

Pay-per-use AI and data tools via x402: image, video, music, voice, search, crypto. USDC.

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

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

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

Crypto market intelligence for Projects, Topics, Intel, Reports, and Clusters.

Real-time DEX and on-chain data across 36 blockchains: liquidity pools, token prices, OHLCV, transactions, and cross-chain search. 17 keyless tools.

x402 paid APIs for AI agents on Base. Blockchain, wallet, DEX, crypto, web search.

Cryptocurrency market data for 12,000+ coins and 350+ exchanges: prices, tickers, OHLCV, contract lookups, tags, and search.

Doc search, intent & cross-chain swaps, limit orders, portfolio, spot prices, gas & all APIs.

64 x402 tools: cheap LLM $0.002, web+news search, French residential-IP scraping, FR/UK/US data.

JPYC (JPY stablecoin) EC platform MCP: product search, x402 gasless checkout, order status.

x402-paid tools: text to 3D-printable STL, web search, and search+read. USDC on Base.

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