@icp-sdk/canisters

A modular library for interacting with canisters on the Internet Computer.

Table of contents

• Features
• Installation
• Usage
• Examples
• Local Development

Features

• ⚙️ Unified interface for interacting with core Internet Computer canisters
• 🧩 Modular structure with independent sub-packages
• 🔄 Always up to date with the latest Candid declarations
• 🧪 Battle-tested and verified on-chain through production dapps

Installation

You can use the library by installing it in your project.

npm i @icp-sdk/canisters

Usage

The SDK re-exports modules for core Internet Computer canisters and exposes them as sub-entries. Each sub-entry corresponds to a specific canister library.

Import the desired module directly from its entry point and refer to its individual documentation for details.

| Canister(s) | Import | Documentation | | ------------- | ---------------------------------- | ---------------------------------------------------------------- | | CKBTC | @icp-sdk/canisters/ckbtc | Docs | | CKETH | @icp-sdk/canisters/cketh | Docs | | CMC | @icp-sdk/canisters/cmc | Docs | | IC Management | @icp-sdk/canisters/ic-management | Docs | | Ledger ICP | @icp-sdk/canisters/ledger/icp | Docs | | Ledger ICRC | @icp-sdk/canisters/ledger/icrc | Docs | | Ledger Cycles | @icp-sdk/canisters/ledger/cycles | Docs | | NNS | @icp-sdk/canisters/nns | Docs | | SNS | @icp-sdk/canisters/sns | Docs |

Examples

Here's for example how to use the ckETH module through its sub-entry:

import { CkEthMinterCanister } from "@icp-sdk/canisters/cketh";
import { createAgent } from "@dfinity/utils";

const agent = await createAgent({
  identity,
});

const { getSmartContractAddress } = CkEthMinterCanister.create({
  agent,
});

const address = await getSmartContractAddress({});

Similarly, the ICP and ICRC ledgers can be used as follows, with the slight difference that their imports are nested under a common parent.

import { IcrcLedgerCanister } from "@icp-sdk/canisters/ledger/icrc";
import { createAgent } from "@dfinity/utils";

const agent = await createAgent({
  identity,
});

const { metadata } = IcrcLedgerCanister.create({
  agent,
});

const data = await metadata({});

Local Development

When developing locally, you need to configure the agent to connect to your local replica instead of mainnet. You can also specify custom canister IDs deployed on your local environment.

import { IcrcLedgerCanister } from "@icp-sdk/canisters/ledger/icrc";
import { createAgent } from "@dfinity/utils";

const agent = await createAgent({
  identity,
  host: "http://localhost:4943",
  fetchRootKey: true,
});

const { metadata } = IcrcLedgerCanister.create({
  agent,
  canisterId: MY_CANISTER_ID,
});

const data = await metadata({});