"A search assistant for performing deep web research" matching MCP connectors:

Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

Search, buy, and manage domains, DNS records, orders, and NFSC balance on Namefi.

Search scored onchain agent frameworks, MCPs, wallets, tools, and live agents.

MCP server for Fuse Network: balances, tokens, staking, DeFi data, swaps and on-chain transactions.

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.

Gasless, MEV-protected onchain token swaps for AI agents on 14 EVM chains, built on CoW Protocol.

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.

Feed of x402/L402 services newly listed on 402index.io within a recency window (candidate #8, manual

Live operational + integration registry for Bittensor subnets: APIs, schemas, health.

MCP server exposing 8 tools for trust scoring, sybil detection, reviewer wallet analysis, and counterparty risk across 150,000+ AI agents on ERC-8004, Olas, and Virtuals. Streamable HTTP, JSON-RPC 2.0, no API key required.

Risk-adjusted stablecoin yield ranks for other agents. Research only. Never holds keys or executes.

Abstraxn: public Web3 MCP server for read-only chain data and pay-per-call relays.

Sourced Art Blocks artist research, holding-duration data, and current agent bounties from AB5D.

Zero-install remote MCP server for proof-of-existence file attestation.

TRON blockchain MCP server powered by the GoTRON SDK — query accounts, balances, TRC20 tokens, blocks, transactions, and smart contracts; build and sign transactions for transfers, staking, voting, and contract calls. Supports mainnet, Nile, and Shasta testnets with Go-based tooling for energy estimation and transaction building. Available via stdio or hosted Streamable HTTP

S3 storage and Solana/Base/Ethereum health checks for AI agents, paid per call via x402.

The honest trust index for x402: check who you're paying before your agent pays.

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

Solana memecoin rug check for trading agents: pump.fun launches, calibrated rug risk, wallets, KOL.

Onchain loyalty MCP on Base: programs, mint, rewards, vouchers for AI agents.