Send a 1 USDC tip to an Ethereum address via x402 payment on Base network.
What it does
This x402-enabled endpoint lets callers send a micro-tip ("buy a coffee") to the Ethereum address 0x6A35671c32F0055688D9f29Fa7557CD887922e72. It uses the x402 protocol's exact payment scheme on the Base network, accepting USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) as the payment asset. The required payment amount is 1 USDC (1,000,000 in 6-decimal units).
The endpoint is accessed via HTTP GET with an X-PAYMENT header containing a valid x402 payment proof. Upon successful payment verification, it returns an application/json response. The payment timeout is 300 seconds. The hosting application (x402-poc.vercel.app) is a proof-of-concept platform that allows users to create x402 tip links, each tied to a specific recipient wallet address.
This is a minimal demonstration endpoint with no additional documentation, OpenAPI spec, or detailed usage guides available. It serves as a straightforward example of the x402 payment protocol applied to a tipping use case.
Capabilities
Use cases
- —Sending a 1 USDC tip to a specific Ethereum address as a 'buy a coffee' gesture
- —Demonstrating x402 protocol payment flow for agent-to-human tipping
- —Integrating programmatic USDC micro-tips into automated workflows
Fit
Best for
- —Developers experimenting with the x402 payment protocol
- —Agents that need to send small USDC tips on Base
- —Proof-of-concept x402 payment integrations
Not for
- —Variable-amount or large-value payments (fixed at 1 USDC)
- —Non-USDC or non-Base-network payment scenarios
- —Production tipping systems requiring receipts, refunds, or dispute resolution
Quick start
curl -X GET \
-H "X-PAYMENT: <your-x402-payment-proof>" \
https://x402-poc.vercel.app/api/0x6A35671c32F0055688D9f29Fa7557CD887922e72/coffeeEndpoint
Quality
The endpoint is live and returns a well-formed 402 challenge with clear payment parameters. However, there is no documentation, no OpenAPI spec, no example responses, and the hosting site is a minimal proof-of-concept with no additional pages. Most details are inferred solely from the x402 challenge payload.
Warnings
- —No documentation or OpenAPI spec available — all details inferred from the 402 challenge
- —This is a proof-of-concept deployment (x402-poc); reliability and longevity are uncertain
- —No example response body is available; the actual payload returned after payment is unknown
- —Fixed to a single recipient address — not a general-purpose tipping API
Citations
- —The endpoint returns a 402 challenge requiring 1,000,000 units of USDC (1 USDC) on Base network via the exact payment schemehttps://x402-poc.vercel.app/api/0x6A35671c32F0055688D9f29Fa7557CD887922e72/coffee
- —The USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://x402-poc.vercel.app/api/0x6A35671c32F0055688D9f29Fa7557CD887922e72/coffee
- —The hosting site allows users to create x402 tip linkshttps://x402-poc.vercel.app
- —Payment timeout is 300 seconds and response MIME type is application/jsonhttps://x402-poc.vercel.app/api/0x6A35671c32F0055688D9f29Fa7557CD887922e72/coffee