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

Enables AI agents to turn raw calldata, transaction objects, JSON-RPC requests, EIP-712 typed data and personal_sign messages into short plain-English briefings covering what a request asks for, which risky allowances or permissions need attention, and what could not be verified. Runs entirely offline with no RPC, wallet, API key or safety verdict, using three read-only tools exposed to any MCP client.

A read-only MCP server for AI agents to access Nostr profiles, notes, search, and relay lists through user-chosen relays, without requiring an account or keys.

Generates MCP servers from smart contract ABIs, enabling Claude to interact with any Ethereum contract via natural language commands.

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

MCP server for Chainlink Runtime Environment, enabling build, simulate, deploy, and manage CRE workflows from any MCP client.

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.

Lets AI agents check whether an EVM wallet address carries an EIP-7702 delegation across eight chains (Ethereum, Base, BNB Chain, Arbitrum, OP, Polygon, Gnosis, Unichain) and learn how to obtain a deeper paid report with delegate bytecode heuristics and risk levels. Read-only, never touching private keys or seed phrases.

Teaches AI coding agents how to reason correctly about MetaMask Embedded Wallets / Web3Auth architecture, SDK choice, key derivation, auth flows, and common integration pitfalls.

Read-only access to the live NOVAI blockchain (an AI-native L1) over public JSON-RPC. Query blocks, transactions, AI entities, on-chain signals, oracle anchors, and memory objects. No keys, no write paths.

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 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

MCP server for Shelby Protocol that enables AI agents to read, write, and manage files on decentralized storage (Aptos) through tools like upload, download, list, delete, and account info.

Enables agents to read and write technocore.chat messages with a did:key identity, including end-to-end encrypted rooms, via 14 tools over stdio.

Enables LLMs to read and write the BSV social graph with an on-chain identity, OS-keychain wallet, and 38 tools for posts, replies, follows, messages, payments, profiles, and more, with every write broadcast as a real BSV mainnet transaction visible across 50+ shared apps.

Enables read and write interactions with 60+ blockchain networks through Claude Desktop, providing a standardized multi-chain API for transaction management, account insights, staking, and token interactions.

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.

Gives MCP clients tools to discover tokenized Stock Tokens, read prices, corporate actions, and portfolio balances, and create route quotes. It prepares policy-checked trade plans with an explainable verdict and unsigned transactions for the user's wallet to sign.

A Model Context Protocol server enabling AI assistants to create, buy, and sell tokens on the Pump.fun platform on Solana.

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 agents to create identities, list and find services, handle payments in USDC, and manage reputation through a decentralized marketplace.

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.

Enables MCP clients to inspect public arena state, feed, leaderboard, rules, and guard charter; register a wallet; and send locally signed persuasion attempts to a defending agent to try to win a USDC pot. Read operations require no key, while write operations sign locally with a user-supplied private key that never leaves the machine.

Identity + memory layer for AI agents on the Emercoin blockchain — read open, write via GitHub OAuth

MCP server for witnessd, enabling agents to create tamper-evident, signed, and Merkle-anchored certificates of any public URL or API response at a moment in time.

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.

Bridges MCP clients to AVOCADO, enabling users to find public jobs, apply, submit evidence, and read receipts through a stdio interface.

Enables interaction with Ethereum-compatible smart contracts through their ABI, allowing both read operations (querying state) and write operations (executing transactions) dynamically based on the contract's interface.

Provides instant, offline access to a curated intelligence database of 25 Solana/web3 earning platforms, with tools to search topics, retrieve detailed evidence notes, and view verdict, payout rail, and KYC gate statistics.

Enables AI agents to create and manage self-custodial ERC-4626 vaults holding a rebalanced basket of tokenized US stocks (NVDA, META, AAPL, GOOGL) on Base, with tools to quote, buy, sell, rebalance, redeem in USDC or in-kind, and transfer shares. Also provides USDC bridging between Base and Arc, gas sponsorship payable in USDC, and x402 payment utilities, with every write returned as unsigned calldata the agent signs itself.

A minimal demo of the x402 payment protocol protecting an MCP tool endpoint, showing how to charge for MCP tools using real 402 rejections and testnet payments.