Grain · x402
Surface-as-a-Service for 3D pipelines. Unlock high-fidelity, production-ready material shaders (PBR) on-demand. No subscriptions—pro animators pay 0.01 USDC to instantly pull a unique texture hash into their workspace, with provenance baked into every transaction.
The primitive.
Access to the material asset library engine is metered with x402: 0.01 HBAR or 0.01 HTS USDC per call, paid from the embedded wallet, so filmmakers — or the agents working for them — pay per query and get a HashScan receipt every time.
Why this primitiveShifts from a passive storage 'vault' to a high-velocity utility. x402 eliminates the friction of credit systems, allowing render engines or artist plugins to micro-pay for assets only when they hit 'import'.
Required keys.
Add these in your Lovable project under Settings → Secrets before pasting the prompt below.
The build prompt.
Paste into a fresh Lovable project. Make sure all five secrets above are set first. read the build strategy →
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Market sizing.
Indicative figures for hackathon pitches — refine with your own research before raising.