"A tool that can connect to MySQL database, understand table structure and query related data" matching MCP servers:

Enables risk-adjusted yield rankings and policy checks for DeFi research via a remote MCP endpoint.

A Model Context Protocol server providing tools for querying Bitcoin blockchain data via Blockchain Data and Query APIs, supporting various BTC information retrieval functions.

A bridge that connects Dune Analytics blockchain data to AI applications through Model Control Protocol, allowing LLMs to access on-chain data via natural language interactions.

Enables AI agents to fetch live multi-chain portfolio, token info, gas prices, and token prices across Ethereum, Base, Polygon, Arbitrum, and Optimism with a single call. No API key required.

23 agent tools: DEX token prices, liquidity, slippage, gas and arbitrage across BNB Chain, Polygon, Arbitrum, Base, Avalanche and Optimism, plus geocoding, weather, web search, URL-to-Markdown, RSS, IP geolocation, holidays, GLEIF LEI lookup and the US Treasury yield curve. 22 are free with no API key, wallet or signup. One paid cross-DEX spread tool pays from your wallet, with hard spend caps.

Discovers related blockchain addresses and domain names for web3 identities across different platforms including Ethereum, Farcaster, Lens, and ENS using next.id's relation server data.

Monero/Zcash payment webhooks + DeFi liquidation & Ethereum builder data over MCP. Free tier; x402.

Cross-chain cryptocurrency swaps via Chainflip. Get quotes, execute swaps, and track progress. No API key required to get started.

Exposes Base mainnet chain query tools over MCP, letting clients fetch an address's native balance and current gas fee estimates (slow/standard/fast urgency) from an upstream HTTP API. Paid tools are gated by x402 micropayments settled through the CDP facilitator, with a free health check and a documented free-trial allotment.

Enables AI agents to fetch crypto market and on-chain data, including prices across venues, token facts, OHLC candles, market overview, DeFi TVL, and wallet balances, with two free tools and the rest paid per call in USDC on Base via x402.

Enables MCP-capable AI agents to access pay-per-call Solana data such as health, token prices, account balances, transactions, and trending DEX pairs, with automated x402 USDC settlement and no signup or API key required.

Enables MCP-capable AI agents to make pay-per-call Solana data requests (snapshots, risk checks, token reports, health, balances, transactions, trending pairs) with automatic USDC settlement over x402.

MCP server for Crypto APIs Block Data product. Get block details by height or hash for EVM, UTXO, and XRP blockchains.

Signed, outcome-verified smart-money data for Polymarket: which wallets actually win, scored from real on-chain settlement (95% Wilson lower bound over resolved markets) and ed25519-signed so an agent can verify it offline. Whale trades, smart-money consensus and wallet track records, paid per call in USDC over x402, with no account and no API key.

Enables AI assistants to access AnChain.AI blockchain intelligence APIs for risk assessment, sanctions screening, and transaction analysis on blockchain addresses and transactions.

A tool that enables users to interact with blockchain data to retrieve token total supply, chain IDs, and filtered RPC endpoints across different blockchain networks.

Pump.fun data fetch tool for Model Context Protocol

Enables AI agents to query crypto data through a hosted remote endpoint: on-chain wallet and token analytics across Ethereum, BNB Chain, Base and HyperEVM, Hyperliquid perp positions and market stats, cohort-based long/short positioning, and Polymarket markets and smart-money flows. Connects via OAuth 2.1 or an API key header from Claude, Cursor, VS Code, and other MCP clients.

Made-to-order data for AI agents via x402 micropayments on Base. Describe a need in plain language, get a custom quote, pay per call. No signup, no API keys. HTTP + MCP transports. 5 tools.

MCP server providing data tools for AI agents (agentkit-data-mcp).

Enables MCP clients to fetch Argentine USD/ARS quotes, INDEC inflation data, and national holidays, validate CUIT/CBU identifiers, and generate Ripio wARS on-ramp links, with paid calls settled per use in wARS on Celo via x402 or free quote mode.

Premium research articles for AI agents with x402 payment on Base network.

Enables querying public Bitcoin network data including fees, mempool status, hashrate, transactions, address stats, and Lightning network information without requiring API keys.

Enables AI assistants to access live blockchain data across multiple networks, including wallet holdings, payment verification, token prices, swaps, and scam checks.

An official Model Context Protocol (MCP) server that provides AI agents with native, real-time access to high-value developer datasets. Currently supports SaaS/AI pricing comparisons, trending developer discussions (V2EX), and real-time Base/Arbitrum gas rates. Free Open Beta is active.

Integrates multiple XRPL data sources including LOS, Validator History Service, XRPL JSON-RPC, and XRPLMeta to provide comprehensive querying of XRPL network data, accounts, transactions, tokens, validators, and more via MCP tools.

A fully autonomous patent data marketplace for AI agents, providing highly structured JSON datasets with strategic insights. Supports instant M2M transactions via ROSE on the Oasis Network.

A Model Context Protocol server that enables interaction with Polymarket prediction markets through Claude Desktop.

This MCP wraps Bitrefill public API to allow agents to search for products and shop using cryptocurrencies like Bitcoin, Ethereum, Solana, and many more.

MCP server for Crypto APIs Transactions Data. Enables lookup of transaction details by hash across EVM, UTXO, Solana, XRP, and Kaspa blockchains.