Public Rest API for 3commas.io (2020-06-10)

General API Information

• Official Announcements regarding changes, downtime, etc. to the API will be reported here: https://t.me/commas_API

• We have telegram group where you can discuss any issues with API https://t.me/xcommas_api

• Streams, endpoints, parameters, payloads, etc. decscribed in the documents in this repository are considered official and supported.

• The use of any other streams, endpoints, parameters, or payloads, etc. is not supported; use them at your own risk and with no guarantees.

• The base endpoint is: https://api.3commas.io/public/api

• All endpoints return either a JSON object or array.

• PAIR format is QUOTE_BASE (for example USDT_BTC) for all exchanges (no matter what format the exchange is using).

• Data is returned in ascending order. Oldest first, newest last.

• All time and timestamp related fields are in seconds.

• HTTP 4XX return codes are used for malformed requests; the issue is on the sender's side.

• HTTP 429 return code is used when breaking a request rate limit.

• HTTP 418 return code is used when an IP has been auto-banned for continuing to send requests after receiving 429 codes.

• HTTP 5XX return codes are used for internal errors; the issue is on 3commas's side.

• HTTP 504 return code is used when the API successfully sent the message

• Any endpoint can return an ERROR; the error payload is as follows:

{
  "error": "record_invalid",
  "error_description": "Invalid parameters",
  "error_attributes": {
    "api_key": [
      "is too short (minimum is 5 characters)"
    ],
    "secret": [
      "is too short (minimum is 5 characters)"
    ],
    "name": [
      "is too short (minimum is 2 characters)"
    ]
  }
}

• error field is mandatory. Specific error codes and messages defined in another document.
• error_description is localized extended description of error occurred. Optional.
• error_attributes used to show fields that didn't pass validations. Optional.
• For GET endpoints, parameters must be sent as a query string.
• For POST, PUT, and DELETE endpoints, the parameters may be sent as a query string or in the request body with content type application/x-www-form-urlencoded. You may mix parameters between both the query string and request body if you wish to do so.
• Parameters may be sent in any order.
• If a parameter sent in both the query string and request body, the query string parameter will be used.

Third-party implementations

• https://www.npmjs.com/package/3commas-api-node
• https://github.com/TheKimono/3Commas.Net
• https://github.com/bogdanteodoru/py3cw (Python 3.x implementation)

LIMITS

• A 429 will be returned when either rather limit is violated.
• Each route has a weight which determines for the number of requests each endpoint counts for. Heavier endpoints and endpoints that do operations on multiple symbols will have a heavier weight.
• When a 429 is received, it's your obligation as an API to back off and not spam the API.
• Repeatedly violating rate limits and/or failing to back off after receiving 429s will result in an automated IP ban (HTTP status 418).
• IP bans are tracked and scale in duration for repeat offenders, from 2 minutes to 3 days.

Endpoint security type

• Each endpoint has a security type that determines the how you will interact with it.
• API-keys are passed into the Rest API via the APIKEY header.
• API-keys and secret-keys are case sensitive.
• API-keys can be configured to only access certain types of secure endpoints. For example, one API-key could be used for STATS only, while another API-key can access everything.

Security Type	Description
NONE	Endpoint can be accessed freely.
APIKEY_ONLY	Endpoint requires sending a valid API-Key.
SIGNED	Endpoint requires sending a valid API-Key and signature.

SIGNED Endpoint security

• SIGNED endpoints require an additional header, Signature, to be sent.
• Endpoints use HMAC SHA256 signatures. The HMAC SHA256 signature is a keyed HMAC SHA256 operation. Use your secretKey as the key and uri?totalParams as the value for the HMAC operation.
• The signature is not case sensitive.
• totalParams is defined as the query string concatenated with the request body.

SIGNED Endpoint Examples for POST /public/api/ver1/accounts/new

Here is a step-by-step example of how to send a valid signed payload from the Linux command line using echo, openssl, and curl.

Key	Value
apiKey	vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A
secretKey	NhqPtmdSJYdKjVHjA7PZj4Mge3R5YNiP1e3UZjInClVN65XAbvqqM6A7H5fATj0j

Parameter	Value
type	binance
name	binance_account
api_key	XXXXXX
secret	YYYYYY

Example 1: As a query string

• queryString: type=binance&name=binance_account&api_key=XXXXXX&secret=YYYYYY

• HMAC SHA256 signature:

  [linux]$ echo -n "/public/api/ver1/accounts/new?type=binance&name=binance_account&api_key=XXXXXX&secret=YYYYYY" | openssl dgst -sha256 -hmac "NhqPtmdSJYdKjVHjA7PZj4Mge3R5YNiP1e3UZjInClVN65XAbvqqM6A7H5fATj0j"
  (stdin)= 30f678a157230290e00475cfffccbc92ae3659d94c145a2c0e9d0fa28f41c11a
  

• curl command:

  (HMAC SHA256)
  [linux]$ curl -H "APIKEY: vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A" -H "Signature: 30f678a157230290e00475cfffccbc92ae3659d94c145a2c0e9d0fa28f41c11a" -X POST 'https://api.3commas.io/public/api/ver1/accounts/new?type=binance&name=binance_account&api_key=XXXXXX&secret=YYYYYY'
  

Example 2: As a request body

• requestBody: type=binance&name=binance_account&api_key=XXXXXX&secret=YYYYYY

• HMAC SHA256 signature:

  [linux]$ echo -n "/public/api/ver1/accounts/new?type=binance&name=binance_account&api_key=XXXXXX&secret=YYYYYY" | openssl dgst -sha256 -hmac "NhqPtmdSJYdKjVHjA7PZj4Mge3R5YNiP1e3UZjInClVN65XAbvqqM6A7H5fATj0j"
  (stdin)= 30f678a157230290e00475cfffccbc92ae3659d94c145a2c0e9d0fa28f41c11a
  

• curl command:

  (HMAC SHA256)
  [linux]$ curl -H "APIKEY: vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A" -H "Signature: 30f678a157230290e00475cfffccbc92ae3659d94c145a2c0e9d0fa28f41c11a" -X POST 'https://api.3commas.io/public/api/ver1/accounts/new' -d 'type=binance&name=binance_account&api_key=XXXXXX&secret=YYYYYY' 
  

Public API Endpoints

Deal status:

• CREATED
• BASE_ORDER_PLACED
• BOUGHT
• CANCEL_PENDING
• CANCELED
• COMPLETED
• FAILED
• PANIC_SELL_PENDING
• PANIC_SELL_ORDER_PLACED
• PANIC_SOLD

Permissions:

• BOTS_READ
• BOTS_WRITE
• ACCOUNTS_READ
• ACCOUNTS_WRITE
• SMART_TRADES_READ
• SMART_TRADES_WRITE

Rate limiters (rateLimitType)

• REQUESTS
• ORDERS

Rate limit intervals

• SECOND
• MINUTE
• DAY

Test connectivity to the Rest API (Permission: NONE, Security: NONE)

GET /ver1/ping

Weight: 1

Parameters: NONE

PongEntity

{
pong: 'pong' 
 } 

Test connectivity to the Rest API and get the current server time (Permission: NONE, Security: NONE)

GET /ver1/time

Weight: 1

Parameters: NONE

TimeEntity

{
server_time: 1525533222 
 }