本页目录

快速开始

读取密钥信息或请求签名前，先启用目标链。使用该链的账户编号、sequence、手续费和 RPC 端点；运行签名示例前，请替换其中的占位值。

了解如何检测、连接和与 Cosmos 链进行交互。

Provider 检测


// Detect OneKey Cosmos provider
const provider = window.$onekey?.cosmos
 
if (!provider) {
  throw new Error('OneKey Cosmos provider not detected')
}
 
// Check if it's OneKey
console.log('Provider:', provider.isOneKey ? 'OneKey' : 'Unknown')

连接到链


const chainId = 'cosmoshub-4'
 
// Request access to the chain. Read key information separately with getKey().
await provider.enable(chainId)
 
// Or enable multiple chains at once
await provider.enable(['cosmoshub-4', 'osmosis-1', 'juno-1'])

获取账户信息


const chainId = 'cosmoshub-4'
const key = await provider.getKey(chainId)
 
console.log({
  name: key.name,           // Account name
  algo: key.algo,           // Signing algorithm (secp256k1)
  pubKey: key.pubKey,       // Public key (Uint8Array)
  address: key.address,     // Raw address bytes
  bech32Address: key.bech32Address,  // Bech32 formatted address
  isNanoLedger: key.isNanoLedger,    // Ledger compatibility flag
})

添加自定义链

使用 experimentalSuggestChain 添加原生不支持的链：


await provider.experimentalSuggestChain({
  chainId: 'my-chain-1',
  chainName: 'My Custom Chain',
  rpc: 'https://rpc.mychain.io',
  rest: 'https://lcd.mychain.io',
  bip44: { coinType: 118 },
  bech32Config: {
    bech32PrefixAccAddr: 'mychain',
    bech32PrefixAccPub: 'mychainpub',
    bech32PrefixValAddr: 'mychainvaloper',
    bech32PrefixValPub: 'mychainvaloperpub',
    bech32PrefixConsAddr: 'mychainvalcons',
    bech32PrefixConsPub: 'mychainvalconspub',
  },
  currencies: [{
    coinDenom: 'TOKEN',
    coinMinimalDenom: 'utoken',
    coinDecimals: 6,
  }],
  feeCurrencies: [{
    coinDenom: 'TOKEN',
    coinMinimalDenom: 'utoken',
    coinDecimals: 6,
    gasPriceStep: { low: 0.01, average: 0.025, high: 0.04 },
  }],
  stakeCurrency: {
    coinDenom: 'TOKEN',
    coinMinimalDenom: 'utoken',
    coinDecimals: 6,
  },
})

断开连接


await provider.disconnect()

与 CosmJS 配合使用

获取离线签名器以配合 CosmJS 使用：


import { SigningStargateClient } from '@cosmjs/stargate'
 
const chainId = 'cosmoshub-4'
 
// Auto-detect best signer type
const offlineSigner = await provider.getOfflineSignerAuto(chainId)
 
// Or use specific signer types
const aminoSigner = provider.getOfflineSignerOnlyAmino(chainId)
const directSigner = provider.getOfflineSigner(chainId)
 
// Use with CosmJS
const client = await SigningStargateClient.connectWithSigner(
  'https://rpc.cosmos.network',
  offlineSigner
)
 
// Send tokens
const result = await client.sendTokens(
  senderAddress,
  recipientAddress,
  [{ denom: 'uatom', amount: '1000000' }],
  { amount: [{ denom: 'uatom', amount: '5000' }], gas: '200000' }
)

从 Keplr 迁移

OneKey 的 Cosmos provider 与 Keplr 兼容。只需更改您的 provider 检测方式：


// Before (Keplr only)
const provider = window.keplr
 
// After (OneKey with Keplr fallback)
const provider = window.$onekey?.cosmos || window.keplr