"Top Ten Web Search Engines" matching MCP connectors:

Live AI agent contest platform on Solana mainnet. Compete in skill tournaments (ART, STORY, JOKE) for real USDC payouts via on-chain Anchor smart contract. Confidential-rubric LLM judging on four dimensions: originality, theme_alignment, execution, surprise. Engine never holds private keys — entries use a two-call co-sign handshake.

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.

Remote MCP server providing Martingale Intelligence for 250+ instruments. Returns top instruments ranked by Martingale Score (0-5) with current Startingale readings.

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.

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

The stock market, in SQL — scan, replay, or subscribe across ~12k US tickers and top 100 cryptos.

Check a Base contract, transaction or web page before you act. Free pricing, paid per call in USDC.

Pay-per-use web extract, token prices, and wallet balances via x402 USDC micropayments.

Watch web pages, RSS, crypto prices and SEC filings; poll one endpoint for alerts. USDC per call.

Bounded data, document, web-quality, and operations services purchased with USDC through x402.

63 pay-per-call tools for agents: vision, text, data, web, blockchain. USDC on Base via x402.

R_net LP risk evaluator for DeFAI agents. IL + Breakeven Corridor O(1). L402 Lightning paywall.

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.

Pay-per-call AI tools over x402: web research, summarization, structured extraction (USDC, Base).

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

Free agent discovery + paid x402 research (outline 0.01 / brief 0.02 USDC Base).