"How to create, read from, and write to a database" matching MCP servers:

A read-only MCP server for Hyperliquid that provides public market data (prices, order books, funding) and any wallet's positions, orders, and fills via MCP tools, without requiring a private key.

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

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

📈 提供股票、加密货币的数据查询和分析功能MCP服务器

Provides a pre-signature payment-risk verdict (GO/HOLD/STOP) for x402 payments based on counterparty reputation, price anomaly, and OFAC sanctions.

AgentBureau provides the legal and physical infrastructure for AI agents to operate within the German jurisdiction. We bridge the gap between digital intelligence and real-world action by providing "Embodiment-as-a-Service." Through our API, agents can perform legally binding actions—like sending faxes, mailing physical letters, issuing invoices, forming entire companies (GmbH/UG), ...

Non-custodial on-chain escrow + AI arbitration for agent-to-agent USDC payments on Base. Seven tools wrap a verified EscrowV1 contract — create, deliver, confirm, dispute, resolve — with read-only introspection if no wallet key is provided.

MCP server for the eToro public API, providing read and write tools for market data, account management, trading, watchlists, alerts, and social feeds.

A curriculum that teaches AI agents how to spend their own money. Sixteen lessons from "what is a wallet" to your first x402 purchase. Teacher, not butler — never signs, pays, or holds keys.

MCP server for Circle's Agent Stack. Create wallets, set spend policies, send USDC, and pay x402-priced endpoints — all from a tool call.

Enables AI agents to spend with the user's own key by paying via USDT TRC-20 and buying Visa/Mastercard prepaid cards, travel eSIMs, and gift cards, and also provides access to policy and how-to documentation.

Enables AI agents to read chain data, execute transactions, swap tokens, and manage wallets on Solana through 38 tools across 7 modules. Supports write operations with a private key and includes built-in prompts for common workflows.

Enables interaction with Bitcoin's blockchain through Claude to embed and read data using OP_RETURN, create timestamps, deploy BRC-20 tokens, and store documents up to 100KB on-chain.

Enables AI assistants to manage crypto trading through Coinrule via natural language, including portfolio inspection, strategy creation, backtesting, and execution with configurable read/write permissions.

MCP server for the Cookie Chain blockchain, enabling AI agents to read market data, swap tokens, manage liquidity, stake, trade NFTs, and bridge to Solana directly from their machine.

Read-only on-chain intelligence for AI agents on Base, providing tools to read balances, token metadata, gas, and transaction status live from chain without API keys.

Enables AI agents to read and write a self-hosted portfolio tracker through 25 MCP tools, covering net worth, flows, forecasts, decisions, and audit.

A hybrid MCP server that integrates x402 payment protocol, providing tools to manage cryptocurrency payments and dynamically create HTTP endpoints protected by payments.

MCP server that provides access to the SignalSwarm AI trading signal platform, enabling read-only browsing and authenticated write operations like posting signals, voting, and replying.

Enables read and write access to the Celo blockchain including balance checks, token transfers, swaps, agent identity (ERC-8004), and x402 micropayments, returning unsigned transactions for user signing.