okx-v5-api

This is a non-official OKX V5 API SDK for javascript.

install

npm install okx-v5-api

---

Hello world

main.js

import { OkxV5Api } from 'okx-v5-api'

const run = async () => {
    const okxV5Api = new OkxV5Api({
        apiBaseUrl: 'https://www.okx.com',
        /* profileConfig: { <-- only needed if you will call private APIs
            apiKey: 'XXX',
            secretKey: 'YYY',
            passPhrase: 'ZZZ',
        }, */
    })

    const apiResult = await okxV5Api.call({
        method: 'GET',
        path: '/api/v5/market/exchange-rate',
    })

    console.log(apiResult)
    
    const apiResult2 = await okxV5Api.call({
        method: 'GET',
        path: '/api/v5/asset/currencies?ccy=BTC,ETH,USDT,USDC',
    })
    
    console.log(apiResult2)
}

run()

output

ApiResult {
  code: '0',
  msg: '',
  data: [ { usdCny: '7.244' } ],
  error: null
}

...

GET method API sample

const apiResult = (
    await okxV5Api.call({
        method: 'GET',
        path: '/api/v5/xxx/yyy?ccy=BTC'
    })
).getOrThrow()

POST method API sample

const apiResult = (
    await okxV5Api.call({
        method: 'POST',
        path: '/api/v5/xxx/yyy',
        data: {
          param: 123
        }
    })
).getOrThrow()

By default we return an ApiResult object to represent the raw response body.

Get Data or Throw Error

ApiResult object's getOrThrow method can:

• if API success, return the data
• if API error, throw the error

Demo success case

const apiResult = (
    await okxV5Api.call({
        method: 'GET',
        path: '/api/v5/market/exchange-rate',
    })
).getOrThrow()

console.log(apiResult)

output

[ { usdCny: '7.244' } ]

Demo error case

const apiResult = (
    await okxV5Api.call({
        method: 'POST',
        path: '/api/v5/account/set-position-mode',
        data: {
            posMode: 'net_mode',
        },
    })
).getOrThrow()

output

...\ApiResult.js:15
            this.error = new ApiError_1.ApiError(code, message);
                         ^

ApiError: 50114: Invalid Authority
    at new ApiResult (.....)
    at OkxV5Api.call (.....)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async run (.....\main.js:19:25) {
  code: '50114',
  msg: 'Invalid Authority'
}

---

Authentication

If you need to call private APIs, you need authentication by passing the profileConfig property when you create new OkxV5Api instance.

const okxV5Api = new OkxV5Api({
    apiBaseUrl: 'https://www.okx.com',
    profileConfig: {
        apiKey: 'XXX',
        secretKey: 'YYY',
        passPhrase: 'ZZZ',
    },
})

---

Demo-trading mode

If you need to call private APIs, you need authentication by passing the profileConfig property when you create new OkxV5Api instance.

const okxV5Api = new OkxV5Api({
    apiBaseUrl: 'https://www.okx.com',
    profileConfig: {
        apiKey: 'XXX',
        secretKey: 'YYY',
        passPhrase: 'ZZZ',
        simulated: true // <--- pass this param
    },
})

---

API

class OkxV5Api (main class)

Basically you only need to create an instance of OkxV5Api once, and reuse it to call different APIs by the call methods.

The call methods return a ApiResult object

---

class ApiResult (Thin wrapper to result)

It is thin wrapper of the V5 API's raw response result. It has the following attributes:

• code (string)
• msg (string)
• data (any)

In addition:

• success (boolean)
• error (of type ApiError or null)

It also has a method of getOrThrow, which return the data if success, or throw error otherwise.

---

class ApiError (Error wrapper)

just an Error wrapping V5-API's code and message.

export class ApiError extends Error {
    code: string
    msg: string

    constructor(code: string, msg: string) {
        super(`${code}: ${msg}`)
        this.code = code
        this.msg = msg
        this.name = 'ApiError'
    }
}