Creative Blockchain
🎮 Game Design & Interactive Media · game soundtrack remixing

STEMWAVE · Agent Pay

A per-stem stem-remixing engine for game soundtracks. Every 'Saved Session' is a micro-settled transaction that captures the unique state of the interactive score, allowing players to pay-to-play a personalized sonic experience of the game. The endpoint is priced in USDC over x402, so an autonomous agent can pay for itself without an API key.

x402 track · paid unlockAgent-payable endpoint· machine payments
Section · Onchain

The primitive.

full primer →

The game soundtrack remixing endpoint publishes its own price, so an autonomous agent can pay and retry with no API key — game designers watch a machine buy the answer beside a human doing the same thing.

Why this primitiveLoading details…

Kernel
an endpoint whose price, asset and payee are published in its own 402 response, so an autonomous agent can discover the terms, pay in USDC and retry with no API key and no signup
Drives the UI as
a side-by-side view of the human client and an in-page agent running the same request → 402 → pay → retry loop
Appendix · Secrets

Required keys.

METAMASK_PRIVATE_KEY
Deploys the QUIP verifier to your host chain. Fund on Sepolia via the Google Cloud faucet.
open ↗
SEPOLIA_RPC_URL
Host-chain HTTPS RPC endpoint. Any Sepolia provider works.
open ↗
ETHERSCAN_API_KEY
Required for npx hardhat verify after deploy.
open ↗

Add these in your Lovable project under Settings → Secrets before pasting the prompt below.

Appendix · Mega-prompt

The build prompt.

Paste into a fresh Lovable project. Make sure all five secrets above are set first. read the build strategy →

Loading the build prompt…
Open in Lovable ↗Sepolia Etherscan ↗
Appendix · Market

Market sizing.

TAM
…
SAM
…
SOM
…

Indicative figures for hackathon pitches — refine with your own research before raising.

See also

Adjacent entries.

game soundtrack remixing
Interactive Music NFTs
Mint unique interactive game soundtrack remixes with onchain provenance. Every action is signed with a fresh WOTS+ one-time key.
interactive puzzles
CIPHERPAY · Agent Pay
Players pay per attempt to validate complex logic gates or cryptographic riddles against a Ethereum Sepolia facilitator. Game designers receive instant settlement for their content loops, turning difficulty curves into direct revenue streams. No subscriptions—just pay to solve. The endpoint is priced in USDC over x402, so an autonomous agent can pay for itself without an API key.
event verification
RallyPoint · Agent Pay
A secure 'Check-in as a Service' (CaaS) layer for live gaming events. This micropayment eliminates bot-driven reward farming by enforcing a 'Proof-of-Skin' cost, enabling developers to distribute high-value RWA or in-game assets only to verified, paying participants without high gas overhead. The endpoint is priced in USDC over x402, so an autonomous agent can pay for itself without an API key.
interactive exploration
Waypoint · Agent Pay
Players pay to unlock the next leg of the hunt, while creators earn instant, metered royalties for game design. Successful completion triggers a Base transaction hash that acts as an immutable voucher for physical rewards or digital loot. The endpoint is priced in USDC over x402, so an autonomous agent can pay for itself without an API key.