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Extend Divvi apps using Hooks

If you want to start coding, check out the Live Preview and the example application with hook implementations.
Divvi Hooks is a system that allows developers to extend apps (e.g., the Valora wallet and other Divvi apps) by writing short programs called “hooks”. Divvi apps will call hooks in response to certain in-app or blockchain events and use the results from hooks to extend the apps’ functionality. Divvi Hooks is currently an experimental feature. We are developing the Divvi Hooks system incrementally based on feedback from developers. Eventually we hope developers will be able to publish hooks that users can enable or disable at will.

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Example: position pricing

Users often hold asset-like positions with dapps that are specific to the dapp implementation. For example, DeFi dapps implement yield farms with smart contracts specific to the dapp and these contracts track each users’ state in the yield farm, like liquidity and unclaimed rewards. A developer can implement a Divvi hook to detect these types of positions and price them. If a user is yield farming they will see their yield farm positions directly in the app.

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Developing a hook

A developer can write a short TypeScript program that handles a specific hook type. A user’s Divvi wallet passes information to the hook, the hook executes in an isolated environment and returns a result, and the app uses the results to extend its default behavior. Currently all hooks need to be approved by a Valora engineer before being available to users in the app. Please contact us if you’re interested in developing a hook and haven’t chatted with us yet.

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Hook types

Divvi supports or is working on support for the types of hooks we list below:
  • Position pricing: show a custom contract position in a Divvi app
  • Name resolution: map an arbitrary identifier or name to a wallet address
  • Shortcut (coming soon): complete simple dapp (or inter-dapp) actions within a Divvi app
We plan on adding support for more hook types. If you have a request please reach out on Discord.

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Contact

#hooks-dev on Divvi’s discord.