"General search" 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.

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.

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

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.

247 LLMs + image/video/voice/music gen + crypto/DeFi/markets/web-search. Pay-per-call USDC, no key.

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

Lets AI agents autonomously pay for and call L402-protected APIs in Bitcoin Lightning. 12 tools across two layers: l402_fetch / l402_balance / l402_set_budget / l402_spending_report (generic L402 client) + 11 VERITY paid services (BTC price, web search, scrape, AI summarize/sentiment/translate, world state, domain intel, deep research, strategic alpha, integration). Sub-second settlement, no API keys, no chargebacks.

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 recorded crypto and TradFi microstructure through deterministic, reproducible agent tools.

Crypto tool MCP: search/trust/install-risk. Remote tools/call is x402 paid.

Search and read essays by Ben Milne on payments, stablecoins, and company building.