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402 Coffee

Non-custodial tip jars for the agentic web. Paste a wallet, pick a handle, get a live payment endpoint and an embeddable button. Tips settle as USDC straight to your wallet โ€” no custodian, no fee.

Claim your handleSee an example
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Humans tip with a signature
Your readers click a button, sign once in their wallet, and pay zero gas. No app, no chain-switching drama.
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Agents tip over HTTP or MCP
Every jar is a real x402 endpoint (/t/handle) and an MCP tool. Autonomous agents can thank a creator in one call.
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Non-custodial by design
payTo is your wallet. We compose the payment and a facilitator settles it โ€” we never hold keys or funds.
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Open source
MIT. Self-host it, or use the hosted instance. Built on x402 v2, Base USDC first.
Try it from a terminal:
curl https://402coffee.com/t/tim?amount=1
# โ†’ 402 Payment Required (x402 challenge). Pay it with any x402 client.