Payments agents on Base

Web search and content-retrieval API built for AI; /search and /contents can be paid per request over x402.

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.

SDK from World (Tools for Humanity) that lets AI agents present a zero-knowledge proof a verified human authorized them, combined with x402 payments.

x402-ping is a API and SDK on Base.

Pay-per-call gateway where AI agents reach 55+ LLMs, data, and tools through one endpoint, settled in USDC via x402 — no API keys.

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

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

Routing and settlement layer and CLI for agent-to-agent commerce, supporting EVM wallets, agent discovery, A2A messaging, x402 payments, and ERC-8004 identity.

Skim is a data service for agents on Base.

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.

US stock market data API (formerly Polygon.io); agents buy it per request over x402 at agent.massive.com with no account.

Ogena token risk is a data service for agents on Solana, Base.

x402 Bazaar Rank is a data service for agents on Base, Arbitrum, Polygon.

MCP server for Gloria AI's curated crypto news feed — sentiment-tagged headlines, recaps, and search for agents.

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

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.

Toolkit giving AI agents gasless access to crypto wallets and onchain functionality.

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.

Open-source kit that gives an always-on agent (built for Grok Bot) its own Base and Solana wallet, with spending limits its owner sets and Sato Hub checks before it spends.

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.

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.

Stripe's merchant-side agent payments: charge agents per call over MPP (cards via SPTs, USDC on Tempo and Solana) or x402 (USDC on Base), settled to your Stripe balance.

Managed AWS service that lets agents pay for APIs, MCP servers and content over x402 and MPP, using Coinbase CDP or Stripe Privy wallets with per-session budgets.

Neuronto Payments is an API and SDK.

Solana-first x402 payment facilitator enabling usage-based, machine-to-machine payments for AI agents.

An x402 micropayment gateway and transparent proxy that adds pay-per-request paywalls to existing APIs without backend rewrites.

One-line x402 paywall SDK for monetizing APIs and MCP servers with per-route USDC pricing.

Alchemy's payment proxy for AI agents — every API request is authenticated, metered, and settled automatically, so agents pay per call without keys or subscriptions.

MCP server giving AI agents live data — markets, crypto, research, X — billed per call via x402 micropayments.

NanoParse is an MCP server on Base.

Public, keyless catalog of x402 payment-gated services indexed by the CDP facilitator, searchable by intent via REST, TypeScript SDK or a hosted MCP server.

Read-only Base mainnet MCP for x402: verify USDC settlements, parse x402 manifests, probe endpoints, decode payment payloads.

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.

MCP server that discovers x402-paid APIs via CDP Bazaar and handles USDC micropayments on Base.

Pay-per-call MCP server (x402, USDC on Base) offering keyless web-read, structured extraction, and markdown tools with signed provenance receipts.

Agent middleware (npm/MCP) that discovers, prices, and pays for paid APIs with multi-chain USDC, tracking 21,000+ endpoints.

Coinbase's remote MCP server: an agent signs in with Coinbase OAuth to trade crypto, US stocks/ETFs and futures, and pay for data over x402.

Local LLM router for agents: routes each request to the cheapest capable model across 78 models, paid with USDC micropayments via x402 on Base or Solana.

Vercel Labs' reference Next.js template wiring the x402 payment protocol into the AI SDK and MCP for paying agents.

CLI and MCP proxy that auto-pays x402/MPP-gated endpoints on Base, Solana, Monad, and Tempo from one mnemonic.

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

Base-based marketplace where humans and AI agents post and complete tasks, with USDC locked in on-chain escrow, agent staking, and ERC-8004 identity/reputation.

GitHub App that escrows USDC on Base (or MUSD on Mezo) against an issue and pays the contributor when the closing PR merges.

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.

An autonomous AI agent with its own wallet that spends USDC to get real work done.

Agent that deploys tokens on Base when tagged on Farcaster.

An Optimism Superchain L2 focused on AI-driven onchain finance, with configurable rules-based trading agents.

ARMA is Giza's autonomous agent that manages stablecoin lending positions across Base DeFi protocols on the user's behalf.

Adversarial AI agent experiment where users try to convince an agent to release onchain funds.

minia2a is a marketplace where agents find and pay for services on Base.

Marketplace where AI agents hire agents: on-chain .agent identities (ERC-8004), escrowed jobs and quotes, settlement in USDC/USDT on BNB Chain and Base.

One gateway for agents to discover, call and pay for 800+ API endpoints from 50+ providers. Pay per call via x402, MPP or Circle Nanopayments.

An ERC-8183 agent skill marketplace where builders register skills and agents discover, chain, and pay for them on-chain.

PulseFeed checks an x402 endpoint before an agent pays it (liveness, a 0-100 score, receiver and price flags) and tracks changes to MCP servers and npm packages. Ships a guard SDK, an MCP server, and Vercel AI SDK and LangChain tools.

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.

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

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

Permissionless on-chain lottery on Base where players buy stablecoin tickets for provably-fair draws and liquidity providers fund jackpots.

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

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.

MCP server for perp funding rates and cross-exchange data across 20+ venues, including Hyperliquid HIP-3.