"General online search" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Search and read the Goldsky documentation from any MCP client. Goldsky provides onchain data infrastructure on 150+ chains, including Ethereum, Base, Solana, Hyperliquid, and Elysium: - Edge RPC: managed JSON-RPC. - Feeds: REST APIs for wallet balances, transfers, and token prices with USD values, plus Polymarket and chain datasets. - Subgraphs and Turbo pipelines: index and stream onchain data. Pay per request over x402 with USDC and no account, or use an API key.
Skavio LLC provides 18 hosted MCP tools for native Circle USDC payments via x402 v2 on Base and Solana: transaction verification, recipient/amount matching, blockchain evidence PDFs, DNS/TLS audits and agent utilities. Discovery and status tools are free; paid MCP calls require explicit buyer wallet authorization. The separate standalone Base-only HTTP APIs include USDC Verify (0.02), Match (0.03), Evidence PDF (0.05), and four DeepSeek-only web operations: Fetch (0.01), Search (0.02), Extract (0.02), Extract + Analyze (0.03 USDC). Those HTTP routes are not additional MCP tools. Evidence PDFs are not tax invoices. Docs: https://getskavio.com/x402/docs/ ; seven-route discovery: https://getskavio.com/.well-known/x402 ; support: support@getskavio.com ; privacy: https://getskavio.com/privacy/ ; terms: https://getskavio.com/terms/
Real-time non-custodial crypto swap estimates and on-chain routing across 240+ pairs.
Search and book 3M+ hotels in 200+ countries. Agents pay per reservation in USDC on Base over x402. Hosted, no auth.
Memecoin screener, backtests, exit alerts, wallet traces + web search, enrichment, 50+ tools (x402)
Pay-per-call numeric claim checks over x402 USDC on Solana mainnet. First 10 calls free.
Pay-per-call tools for AI agents, paid in USDC on Base or Solana. Web search, page and PDF reading, crypto news, Hyperliquid perps, market pulse, Chainlink price history, token checks, SEC filings, weather and more. Free calls every day, and a failed call costs nothing. Works with Tollkit Wallet.
17 pay-per-call web, finance, legal and onchain utilities for AI agents: crypto readers and deployer intelligence on Base, SEC EDGAR search and company filings, OFAC sanctions checks, insider transactions, 13F holdings, and multi-jurisdiction caselaw and legislation search. Pay per call in USDC on Base via x402 or MPP - no account or API key needed.
Pay-per-call agent tools: PDF, OCR, translation, news search, prediction markets, web, chain reads.
Official community MCP server for the Radix DLT network. Inspect on-ledger entities (accounts, components, packages, resources, validators), search and read curated developer docs, validate and preview Scrypto transaction manifests.
xrplme.online gives AI agents source-backed economic and regulatory data for 30 countries, paid per query in XRP over the x402 micropayment protocol on the XRP Ledger. Its MCP server exposes tools to list countries, check country status, read pricing, and run regional research — no API keys and no accounts: agents read the public manifest and pay per call.
ChainRay provides multi-chain blockchain data and intelligence for AI agents through 79 MCP tools across 57 supported networks, covering gas, chain data, wallets, DeFi, market, security, monitoring, and verifiable proofs. MCP access is available at https://mcp.chainray.online/mcp; paid HTTP capabilities settle via x402 on Base.
Search and license 5,000+ fully cleared music tracks via MCP. AI agents can find music by genre, mood, BPM, and instrumentation, then license instantly with USDC on Base. No human in the loop. Also includes free music industry knowledge tools: platform loudness standards, royalty calculators, and genre conventions.
Cited Bitcoin coordination record search (~783k). Lightning. MCP. Not prices/chain analytics.
Search and read the Celo developer documentation
Search settlement-verified x402 APIs for free. Pay providers in USDC on Base, Solana or Algorand.
NCTR Alliance rewards — search bounties, check earning rates, and discover communities.
Honeypot & rug-pull detection, token risk feed, wallet risk, approvals audit. x402 USDC on Base.
Deploy and manage blockchain nodes across 70+ protocols, search docs, request testnet funds.
Search, cite and verify research papers on World Innovation, timestamped on Soneium.
Search a directory of agent-callable services, incl. x402 pay-per-call APIs on Base.
216 x402 tools + free cross-bazaar search; USDC on Base, no API key
Free wallet lookup, ENS, labels, caller ID. Paid x402: search, scrape, XRP yield and lending grades
Search Tempo ecosystem projects, retrieve project details, and list categories.
Search Canton Network ecosystem projects, retrieve project details, and list categories.
Search tokens, check registrations, and run a Chain Daddy creator store from your agent.
Search Robinhood Chain ecosystem projects, retrieve project details, and list categories.
[SAMPLE / TEST CONTENT] Search ATK Magazine; articles $0.20 USDC on Base mainnet via x402.
x402 pay-per-call agent tools (Base USDC): web search, URL extract, OCR, Base tx & allowance scans
AI agents trade general work for test USDC on Base Sepolia, with escrow and signed evidence.
