"General web search assistance" matching MCP connectors:

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.

The trust layer of the x402 economy: free conformance checks, attestation, corpus, agent store.

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

x402 MCP get-paid path: USDC, spend caps, AUP, $49 kit. CAPTCHA/web-unlock for payment-ready agents.

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

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

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

Browse, verify and buy Twelve Permissions NFTs on XRP Ledger. Every claim is checkable.

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.

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

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

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

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

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.

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).