Payments agents on Ethereum

Crypto execution layer and cross-chain wallet that lets agents and users trade, bridge, and manage assets via natural language, plus a skills marketplace and an x402 cloud for spinning up pay-per-call agent endpoints.

Embedded and server wallet infrastructure used to give agents secure key management.

Gasless stablecoin payment relay and managed Agent Wallets across 12 EVM chains (EIP-712 + EIP-7702), with an MCP server and optional ERC-8004 registration on BNB Chain.

Non-custodial toolkit from Trust Wallet (MCP server, CLI, and SDK) that lets AI agents read and transact across 25+ chains within user-defined rules.

Gives any AI agent a crypto wallet to pay x402 APIs, receive USDC, and check balances.

DeFi toolkit that gives AI agents and coding assistants wallets to deposit funds, execute trades, and manage crypto.

Circle's official agent toolkit: Circle CLI, policy-controlled Agent Wallets, gasless USDC Nanopayments, an x402 facilitator and an agent marketplace.

MCP wrapper around Circle's Agent Stack — create USDC wallets, set spend policies, send stablecoin, and pay x402-gated endpoints.

Wallet-as-a-Service infrastructure for AI agents.

Official OpenSea agent skill and MCP server letting AI agents query NFT/token data and execute marketplace operations such as listing, offers, and token swaps.

Cross-chain swap/settlement API solved by the NEAR Intents solver network; also an MPP payment method so agents pay 402s from any chain.

Farcaster developer platform providing APIs, SDKs, webhooks, and an agent skill for building and deploying agents that read and write Farcaster data.

Draft Ethereum standard defining an on-chain job-escrow protocol with evaluator attestation so AI agents can hire, deliver, and settle work without intermediaries.

Drop-in OpenAI Python client with transparent x402 micropayment support.

Chainlink's hosted HTTP gateway and skill bundle: pay-per-call Data Streams prices and CRE-run onchain actions with gas covered, paid via x402 in USDC on Base.

Privacy-preserving x402 payments for agents on Base, with stealth addresses and TEE-encrypted inference, no accounts or API keys.

Crypto-to-gift-card and mobile top-up commerce platform with a Skills/MCP/API surface for agents to buy real-world goods with stablecoins.

Wallet and DeFi data provider offering portfolio, positions, transactions, PnL, and prices across many chains, with an agent-accessible API.

Open DeFi analytics dashboard and free API tracking TVL, fees, revenue, volume, and yields across many chains and protocols.

Onchain analytics platform with wallet labeling and smart-money tracking, offering an API with key-based and x402 access.

An onchain data network providing structured, AI-ready blockchain data across many chains, with API, CLI, MCP, and x402 access.

Onchain intelligence API that attributes wallets to entities; agents can pay per request in USDC over x402.

Onchain market metrics (MVRV, exchange flows, supply distribution) sold per call over x402, no API key.

Agent-native blockchain data API: single-purpose REST 'Skills', an MCP server (@one-source/mcp) and an M10 natural-language layer, paid per call via x402 or a $20/mo key.

Crossmint's open-source library of onchain actions (tools) for AI agents across chains.

Skill collection for EmblemAI agents — 200+ crypto tools across seven blockchains.

Agent skills for OKX OnchainOS: wallet, token discovery, market data, and DEX swaps.

Agent skill for Bitget Wallet: token swaps, cross-chain bridging, and gasless transactions.

An autonomous agent/builder on Base publishing open-source crypto agent skills such as calldata decoding, proxy resolution, and protocol integrations.

Web3 toolkit for Claude Code: 140 custody-free MCP tools for EVM and Solana DeFi, DEX, and perps.

Network and framework for co-owned autonomous agent services operating onchain.

Commerce SDK for bootstrapping AI agents that can pay, sell, and transact onchain.

Open HTTP 402 payment protocol, now at the x402 Foundation: agents pay per request in stablecoins, and by a newly merged spec, in bitcoin over Lightning.

Open protocol from Google for secure agent-led payments across traditional and crypto rails, with a crypto-native x402 extension built with Coinbase, Ethereum Foundation, and MetaMask.

Open-source privacy SDK that adds unlinkable, zero-knowledge payments on top of the x402 agent payment standard.

Pay-per-use security verification endpoints for AI agents, billed via x402 micropayments.

Non-custodial ERC-4626 yield optimizer on Base and Ethereum; agents deposit stablecoins into yoUSD to earn aggregated DeFi yield.

npx CLI that scaffolds an ERC-8004 agent project with A2A and MCP servers and optional x402 payments, for EVM chains and Solana.

Non-custodial onchain yield API for agents: discover, assess, enter and exit 3,300+ staking/lending/RWA yields over one MCP server, paid per call via x402.

On-chain US 501(c)(3) community foundation enabling donor-advised funds and crypto, stock, and cash donations to nonprofits, with an agent skill for charitable giving.