AI tools for crypto and wallets: agent payments
Payment rails that let agents pay for APIs and services on their own, including x402 and stablecoin payments. Of the 64 tools on our crypto and wallets page, 10 fit this narrower job. By pricing: 3 open source, 2 paid, usage-based or enterprise, 5 pricing on the maker's site. The most-starred open repos here are Sphere SDK (5,385 stars). Most come from the crypto (8), MCP & infra (2) categories.
Sphere SDK
TypeScript SDK that gives autonomous agents an identity and wallet on the Unicity network to find, negotiate and settle payments with other agents.
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Agentcard
Gives each user of your product a payment card wallet that their AI agent can spend from within set limits.
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Binance Agent OS
Binance developer platform connecting AI agents to trading, market data, Agentic Wallet, x402 payments and on-chain services via MCP, APIs and skills.
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Crossmint for AI Agents
Wallets, stablecoin payments and checkout APIs built for AI agents.
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Daydreams
Open-source tools, payment rails and markets for building agents that buy, sell and coordinate work on-chain.
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Openfort
Open-source stablecoin wallet infrastructure with policy-gated agent wallets, gas sponsorship and x402 support.
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Proof x401
Open HTTP protocol and MCP server that let a website ask an AI agent to prove who it is acting for and have the person cryptographically sign the exact transaction terms, using Proof's agent identity wallet.
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Skyfire
Gives AI agents verified identity and payment credentials so they can access and pay for services across the web.
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Slash
Business-banking MCP server that lets AI agents create cards, set spend limits and send payments, including stablecoins.
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x402
Open HTTP payment standard so agents can pay for APIs per request in stablecoins.
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FAQ
What are the best AI tools for crypto and wallets focused on agent payments?
We list 10. The first three by GitHub stars and featured status are Sphere SDK: TypeScript SDK that gives autonomous agents an identity and wallet on the Unicity network to find, negotiate and settle payments with other agents.; Agentcard: Gives each user of your product a payment card wallet that their AI agent can spend from within set limits.; Binance Agent OS: Binance developer platform connecting AI agents to trading, market data, Agentic Wallet, x402 payments and on-chain services via MCP, APIs and skills.
Are there free or open-source options?
Yes: 3 open source, 2 paid, usage-based or enterprise, 5 pricing on the maker's site. Pricing is as each maker states it.
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