Openhood Docs

Openhood is an AI collection generator for creators who want their work to live entirely on-chain. You describe a concept in plain language; Openhood designs a complete collection system around it — a locked visual style, structured trait categories, intentional rarity weights, and lore that connects the pieces to each other.

The result is not a folder of images on a server. Every piece’s artwork and metadata are written directly into a standard ERC-721 contract on Robinhood Chain, deployed and owned by your own wallet. Openhood never takes custody of anything: not your keys, not your funds, not your collection.

A collection moves through four steps, and you stay in control at each one.

1. 1

   Describe

   Write your concept the way you would explain it to a friend. A mood, a world, a character type — plain language is enough.

2. 2

   Design

   Openhood turns the description into a coherent system: a locked visual style, trait categories, rarity weights chosen on purpose, and connected lore. Coherence is designed in before a single image exists.

3. 3

   Preview

   A small sample of roughly 10–20 pieces is generated so you can judge the collection with your own eyes. Previews cost a handful of credits, never your full budget.

4. 4

   Deploy

   When the sample feels right, you deploy from your own wallet. The collection goes live as a standard ERC-721 on Robinhood Chain, with every piece written into the contract itself.

Generating art costs credits, and Openhood is deliberately careful with them. When you ask for a preview, only a small sample is produced — enough to judge the style, the trait mix, and the overall feel, at a small fraction of the cost of a full run.

This makes iteration cheap where it matters. If the sample is not quite right, refine the description and preview again; you only commit your full credit budget when you generate the complete collection. Because the collection system is locked before generation begins, the full run stays faithful to the sample you approved — the preview is a real slice of the collection, not a loose sketch.

Deployment is a wallet-native flow. Connect MetaMask, Rabby, or Robinhood Wallet, review the transaction, and sign. Your wallet pays the gas, your address becomes the contract owner, and Openhood never touches your keys. If your wallet does not know Robinhood Chain yet, add it with the parameters below.

Testnet ETH is free from the Robinhood Chain testnet faucet, so you can rehearse a full deployment before spending anything real.

Note: the public RPC endpoints are rate-limited. For production integrations, a dedicated provider such as Alchemy or QuickNode is recommended.

Every collection is its own contract. A single factory, OpenhoodFactory, deploys one OpenhoodCollection per collection and hands ownership to the creator who signed the transaction.

Artwork and metadata are split into chunks and written into the contract with SSTORE2, a pattern that stores data as contract bytecode to make large writes affordable. When a marketplace or wallet calls tokenURI(), the contract reassembles those chunks and returns a complete data:application/json;base64 URI with the image embedded inside it as a data URI. Nothing is fetched from anywhere: the answer is the artwork.

Royalties follow ERC-2981, configurable up to 10%. And when a creator decides the work is finished, freeze() seals the collection permanently — an explicit, irreversible statement that what is on chain is the final form.

Openhood collections are ordinary ERC-721 contracts, so OpenSea indexes them like any other collection. Because tokenURI() is fully self-contained, marketplaces render each piece straight from the chain — there is no metadata refresh that can fail and no image host that can lag.

Collection-level details — name, description, imagery — are exposed through contractURI, so the collection page presents itself correctly without manual setup. Creator royalties are declared on-chain via ERC-2981 at up to 10%, and marketplaces that honor the standard apply them automatically to secondary sales.