@agoric/cosmic-proto

@agoric/cosmic-proto

Protobuf interfaces for Agoric on Cosmos

install

npm install @agoric/cosmic-proto

Table of contents

• Usage
  • RPC Clients
  • Composing Messages
• Wallets and Signers
  • Stargate Client
  • Creating Signers
  • Broadcasting Messages
• Advanced Usage
• Developing
• Credits

Usage

RPC Clients

TODO #9200

Composing Messages

Import the agoric object from the Agoric bundle.

import { agoric } from '@agoric/cosmic-proto/agoric/bundle.js';

const {
    installBundle,
} = agoric.swingset.MessageComposer.withTypeUrl;

Connecting with Wallets and Signing Messages

⚡️ For web interfaces, we recommend using cosmos-kit. Continue below to see how to manually construct signers and clients.

Here are the docs on creating signers in cosmos-kit that can be used with Keplr and other wallets.

Creating Signers

To broadcast messages, you can create signers with a variety of options:

• cosmos-kit (recommended)
• keplr
• cosmjs

Amino Signer

Likely you'll want to use the Amino, so unless you need proto, you should use this one:

import { getOfflineSignerAmino as getOfflineSigner } from 'cosmjs-utils';

Proto Signer

import { getOfflineSignerProto as getOfflineSigner } from 'cosmjs-utils';

WARNING: NOT RECOMMENDED TO USE PLAIN-TEXT MNEMONICS. Please take care of your security and use best practices such as AES encryption and/or methods from 12factor applications.

import { chains } from 'chain-registry';

const mnemonic =
  'unfold client turtle either pilot stock floor glow toward bullet car science';
  const chain = chains.find(({ chain_name }) => chain_name === 'agoric');
  const signer = await getOfflineSigner({
    mnemonic,
    chain
  });

Broadcasting Messages

Now that you have your stargateClient, you can broadcast messages:

const { send } = cosmos.bank.v1beta1.MessageComposer.withTypeUrl;

const msg = send({
    amount: [
    {
        denom: 'coin',
        amount: '1000'
    }
    ],
    toAddress: address,
    fromAddress: address
});

const fee: StdFee = {
    amount: [
    {
        denom: 'coin',
        amount: '864'
    }
    ],
    gas: '86364'
};
const response = await stargateClient.signAndBroadcast(address, [msg], fee);

Advanced Usage

If you want to manually construct a stargate client

import { OfflineSigner, GeneratedType, Registry } from "@cosmjs/proto-signing";
import { AminoTypes, SigningStargateClient } from "@cosmjs/stargate";

import { 
    cosmosAminoConverters,
    cosmosProtoRegistry,
    ibcProtoRegistry,
    ibcAminoConverters,
    agoricAminoConverters,
    agoricProtoRegistry
} from '@agoric/cosmic-proto';

const signer: OfflineSigner = /* create your signer (see above)  */
const rpcEndpint = 'https://rpc.cosmos.directory/agoric'; // or another URL

const protoRegistry: ReadonlyArray<[string, GeneratedType]> = [
    ...cosmosProtoRegistry,
    ...ibcProtoRegistry,
    ...agoricProtoRegistry
];

const aminoConverters = {
    ...cosmosAminoConverters,
    ...ibcAminoConverters,
    ...agoricAminoConverters
};

const registry = new Registry(protoRegistry);
const aminoTypes = new AminoTypes(aminoConverters);

const stargateClient = await SigningStargateClient.connectWithSigner(rpcEndpoint, signer, {
    registry,
    aminoTypes
});

Developing

When first cloning the repo:

yarn
yarn build

For very basic unit tests:

yarn test

To test with a real network,

yarn test:live

Codegen

Protos live in ./proto. Look inside of scripts/codegen.cjs and configure the settings for bundling your SDK into @agoric/cosmic-proto:

yarn codegen

Publishing

Build the types and then publish:

yarn build
yarn publish

Related

Checkout these related projects:

• @cosmology/telescope Your Frontend Companion for Building with TypeScript with Cosmos SDK Modules.
• chain-registry Everything from token symbols, logos, and IBC denominations for all assets you want to support in your application.
• cosmos-kit Experience the convenience of connecting with a variety of web3 wallets through a single, streamlined interface.
• create-cosmos-app Set up a modern Cosmos app by running one command.
• interchain-ui The Interchain Design System, empowering developers with a flexible, easy-to-use UI kit.
• starship Unified Testing and Development for the Interchain.