"PubMed Biomedical Literature Search" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
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.
Read-only Hyperliquid vault search, risk, drawdown, rankings, TVL, alerts, and comparisons.
Search, read & publish paid essays. Pay-per-read in USDC on Base (x402); wallet-only, no account.
Verified merchants accepting agentic payments on Lightning/L402/BOLT12/USDT — search, verify, pay.
Search and invoke real AI capabilities on modelmarket.dev. Free trial, then USDC on Base.
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.
Doc search, intent & cross-chain swaps, limit orders, portfolio, spot prices, gas & all APIs.
JPYC (JPY stablecoin) EC platform MCP: product search, x402 gasless checkout, order status.
Cryptocurrency market data for 12,000+ coins and 350+ exchanges: prices, tickers, OHLCV, contract lookups, tags, and search.
64 x402 tools: cheap LLM $0.002, web+news search, French residential-IP scraping, FR/UK/US data.
Catalog of 370+ open-source AI-agent harnesses. Search, list your own, earn USDC tips via x402.
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.
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.
OpenSpender gives your agent an allowance, not your API keys: one self-custodial USDC wallet that pays per request for web search, frontier models (Claude, GPT, Gemini, Grok), image and video generation, and a growing catalog of x402/MPP machine-payable APIs — every call priced before it's paid and capped by budgets you set.
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.
Crypto tool MCP: search/trust/install-risk. Remote tools/call is x402 paid.
