"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.

Enables AI agents to read and bid on a paid message slot on Solana, with enforced spend limits, dry-run proposals, and an append-only audit log for every write.

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 MCP-capable agents to create, verify, and pay EIP-712 USDC invoices on Ink, and read onchain commerce reputation for ERC-8004 agents.

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 any MCP-capable AI agent to discover and trade onchain Solana funds — launching a fund, depositing, rebalancing, redeeming, swapping tokens, managing an app wallet, and following other traders against the live DFM API. Includes onboarding tools for headless agents and read-only versus write access controlled by an API key and a write-enabled flag.

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 MCP clients to inspect and transact with a token launchpad on Robinhood Chain, offering read tools, resources, prompts, and dry-run-first write tools. Supports launches, curve and V4 swaps, graduations, fee claims, buybacks, and factory admin operations

Gives AI agents tools to read Nano (XNO) accounts and history, get XNO/USD rates, create invoices with unique amounts, and verify or wait for payments — with receiving requiring no key. Optionally enables sending small amounts from an off-by-default, capped wallet with an allowlist, daily limits, and exactly-once idempotency keys.

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 an AI coding assistant to create and manage products, prices, payment links, invoices, customers, subscriptions, entitlements, refunds, and webhooks, simulate test payments, read payments and receipts, and verify buyer access through a crypto payment API.

Enables AI agents and MCP clients to browse prediction markets, inspect order books, trades and positions, and to place, cancel and manage orders, close positions and redeem winnings from a locally signing wallet. It also supports read-only operation and a hosted mode for market data only.

Enables AI agents to discover tokenized Stock Tokens, read reference prices and wallet balances on Robinhood Chain, create quotes, simulate transactions, and build policy-checked trade plans that return an explainable verdict plus unsigned transactions for a wallet to sign.

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.

Enables AI assistants to query evidence-backed DeFi yield data across roughly 17,000 pools — what each pool pays, whether yield comes from base or reward tokens, and how rates have moved over 7/30/90 days. Every figure is dated and linked to its source, and access is read-only without touching wallet keys.

Accept crypto payments from AI agents: create an invoice in one call and get a hosted checkout link (USDC/USDT on Celo, Base, Arbitrum, Polygon, BSC). No API key, instant self-custody settlement.

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

Enables AI agents to inspect and measure live crypto charts, read indicator and market-structure data, add native indicators, and create editable annotations through a local MCP bridge.

Lets an agent run a crypto inheritance timer end to end: create switches with recipients and intervals, seal encrypted notes and files locally, check in to restart the countdown, and read or open bundles once they are released — all without leaving the chat client.

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.

Enables AI coding agents and MCP hosts to register a workspace, create stablecoin checkout and payment links, configure webhooks, verify crypto payment status, and add webhook-based access logic to applications.