pay-per-demo

live service · two x402 event experiments

pay-per-demo

An agent pays USDC over x402 and unlocks a private virtual event room.

The current prototype costs 1¢ on Base. The original Demo Day flow stays available as a reference.

paid endpoints

Choose the demo.

01 · currentJuly 29, 2026

Virtual overflow

Agent-paid access to a private prototype room for the Merit Systems + Circle event context.

GET /api/overflow$0.01 USDC

Independent prototype, not official Merit Systems or Circle event access.

View context post
02 · referenceJuly 16, 2026

Agentic Commerce Demo Day

The original one-cent Base flow, preserved with its endpoint and public settlement proof.

GET /api/demo$0.01 USDC
Original demoSettlement proof

Protocol flow

One prompt, one paid response.

x402 · Base
  1. 01PromptHuman intent
  2. 02402Terms returned
  3. 03Pay0.01 USDC · Base
  4. 04AccessPrototype room URL

Ready-to-send prompt

0.01 USDC · Base
human → agent“Use AgentCash: run the virtual overflow prototype at https://pay-per-demo.vercel.app/api/overflow. Max 0.01 USDC on Base. Return prototype access, event context, and the private room URL.”
✓ no account✓ no API key✓ max spend set

x402 paid API

GET/api/overflow

Public discovery is free. The private prototype room is returned only after the one-time payment settles.

$0.01USDC / request
01 · discover
npx agentcash@latest discover https://pay-per-demo.vercel.app
02 · pay + unlock
npx agentcash@latest fetch https://pay-per-demo.vercel.app/api/overflow --yes --payment-protocol x402 --payment-network base --max-amount 0.01
protocol
x402 exact
network
Base
asset
USDC
response
JSON