Creative Blockchain
🎭 Theater & Live Performance · sound design

EchoPass · Agent Pay

A real-time soundscape metering protocol for live performance. Audio engineers use an QUIP-enabled DAW plugin to 'check out' high-fidelity environmental presets. This facilitates per-staged-use revenue for sound designers, replacing flat-fee licensing with live usage settlement. Audience members can pay per-stroll to 'Unlock Live Stem' via QR to listen to isolated audio layers on their devices. 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 sound design endpoint publishes its own price, so an autonomous agent can pay and retry with no API key — directors 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.

sound design
Soundscape Archive
Pin ambient and effect sound files with metadata on IPFS to ensure lasting availability and sharing. Every action is signed with a fresh WOTS+ one-time key.
sound design
Soundscape Provenance
Mint live performance soundscapes as NFTs to authenticate original audio environments. The creator's existing wallet is wrapped with a post-quantum commitment.
improvisation prompts
CueBurn · Agent Pay
Transform stage terror into creative flow with a high-fidelity improv engine. No more repeating 'Office' or 'Space Station'—pay per spark to ensure high-quality, non-redundant creative inputs. Set up 'Stage Tabs' where a director’s wallet fuels a session for the entire troupe. The endpoint is priced in USDC over x402, so an autonomous agent can pay for itself without an API key.
script NFTs
TableRead · Agent Pay
Instead of static NFTs, playwrights meter the reading experience, ensuring every rehearsal read or table-read session triggers a micro-settlement directly to the writer's wallet. Access is cryptographically signed, preventing unauthorized leaks of unreleased drafts. The endpoint is priced in USDC over x402, so an autonomous agent can pay for itself without an API key.