Capi

Capi is a work in progress. The documentation may not reflect the current implementation. Expect a stable release and proper documentation in early 2023.

Capi is a framework for crafting interactions with Substrate chains. It consists of a development server and fluent API, which facilitates multistep, multichain interactions without compromising either performance or ease of use.

• Docs →
  Guides for Capi developers and pattern library developers
• Examples →
  SHOW ME THE CODE
• API Reference →
  A generated API reference, based on type signatures and TSDocs.

Installation

Node.js

npm i capi https://capi.dev/frame/wss/rpc.polkadot.io/@latest/pkg.tar

Deno

import_map.json

{
  "imports": {
    "@capi/polkadot": "https://capi.dev/frame/wss/rpc.polkadot.io/@latest/"
  }
}

At a Glance

import { System } from "@capi/polkadot"

const accounts = await System.Account.entryPage(10, null).run()

Note: to run with Deno, import from @capi/polkadot/mod.js

Running Examples

Within a fresh clone of this repository…

deno task run examples/<example_file>

Rationale

In a likely future of specialized, interoperable chains, developers will need to make use of on-chain programs to satisfy varying use cases; the expertise required to interact with these on-chain programs is currently greater than that which should be expected of app developers. Does this mean that app developers must forgo integrating with this blossoming infrastructure? We think not; the open source community can use Capi to abstract over the atomics of the on-chain world. An interaction spanning several chains and dozens of methods can be described with a single Rune¹.

As you read through this documentation, please consider use cases over which you might like to abstract; if you wish to add your use case to Capi’s standard library, please submit an issue.

Code of Conduct

Everyone interacting in this repo is expected to follow the code of conduct.

Contributing

Contributions are welcome and appreciated! Check out the contributing guide before you dive in.

License

Capi is Apache licensed.