How to Build a Web3 / Blockchain Agent

Server-side EVM wallet for Ai agents. Send transactions, manage tokens, and interact with smart contracts across multiple chains.

Interact with the Bitcoin and Lightning Network to generate keys, validate addresses, decode transactions, and query the blockchain.

MCP server for local transaction signing across EVM, UTXO, Tron, and XRP blockchains — no API calls required

Interact with the Bitcoin blockchain using the Maestro API to explore blocks, transactions, and addresses.

Access blockchain transaction data in natural language, providing human-readable descriptions for AI assistants.

Interact with SOON and other SVM-based blockchains. Check balances, fetch recent transactions, and view token holdings.

Free token swaps for AI agents. No API keys. Returns executable transaction calldata for 40+ EVM chains.

Read/write to over 2k blockchains, enabling data querying, contract analysis/deployment, and transaction execution, powered by Thirdweb.

Universal Contract AI Interface (UCAI) 🔗 ABI to MCP | The open standard for connecting AI agents to blockchain. MCP server generator for smart contracts. Claude + Uniswap, Aave, ERC20, NFTs, DeFi. Python CLI, Web3 integration, transaction simulation. Polygon, Arbitrum, Base, Ethereum EVM chains. Claude, GPT, LLM tooling, Solidity, OpenAI.

43 tools for live blockchain queries across Ethereum, Sepolia, and Avalanche — including token balances, NFT metadata, event logs, contract detection, ENS resolution, and GraphQL API documentation.

Cryptographic identity, scoped delegation, values governance, and deliberative consensus for AI agents. 11 tools, Ed25519 signatures, zero blockchain.

A comprehensive MCP server for tooling interactions(40+) and resource accessibility(60+) plus many useful prompts to interact with Algorand Blockchain.

MCP to interface with multiple blockchains, staking, DeFi, swap, bridging, wallet management, DCA, Limit Orders, Coin Lookup, Tracking and more.

Visual coordination protocol for AI agents — 22 MCP tools for glyph-based communication with 50-70% token savings, shared memory, governance, and on-chain attestation.

A server for blockchain interactions, offering Ethereum vanity address generation, 4byte lookup, ABI encoding, and multi-chain RPC calls.

168 MCP tools for blockchain analytics across Base, Tron, Bitcoin, XRP, Kaspa. Token prices, whale tracking, DeFi, wallet profiling, security scoring. x402 pay-per-call.

A collection of tools for interacting with the Bitcoin SV (BSV) blockchain, including wallet, ordinals, and utility functions.

Interact with the Stellar blockchain to manage wallets, list tokens, query balances, and transfer funds.

Give AI agents spending power without giving them your wallet keys. Cloaked creates on-chain spending accounts with enforced constraints that agents cannot bypass - even if jailbroken or compromised.

Access cryptocurrency market data, exchange information, and other blockchain-related metrics from the CoinMarketCap API.

Provides comprehensive analytics for Solana wallets, including real-time portfolio insights and detailed DeFi activity tracking.

Retrieve on-chain information for EVM contracts locally using an Ethereum RPC node and Etherscan API.

Interact with the COTI blockchain for private token and NFT operations, including ERC20 and ERC721, with privacy features.

MCP server for HD wallet management, balance retrieval, and sync on EVM, UTXO, and XRP blockchains via Crypto APIs