General Info

General API Information

• The base endpoint is: https://papi.binance.com
• All endpoints return either a JSON object or raw primitive.
• Data is returned in ascending order. Oldest first, newest last.
• All time and timestamp related fields are in UTC milliseconds.
• All data types adopt definition in JAVA.

HTTP Return Codes

• HTTP 4XX return codes are used for for malformed requests; the issue is on the sender's side.
• HTTP 403 return code is used when the WAF Limit (Web Application Firewall) has been violated.
• 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 Binance's side.
  1. If there is an error message "Request occur unknown error.", please retry later.
• HTTP 503 return code is used when:
  1. If there is an error message "Unknown error, please check your request or try again later." returned in the response, the API successfully sent the request but not get a response within the timeout period.It is important to NOT treat this as a failure operation; the execution status is UNKNOWN and could have been a success;
  2. If there is an error message "Service Unavailable." returned in the response, it means this is a failure API operation and the service might be unavailable at the moment, you need to retry later.
  3. If there is an error message "Internal error; unable to process your request. Please try again." returned in the response, it means this is a failure API operation and you can resend your request if you need.
  4. If the response contains the error message "Request throttled by system-level protection. Reduce-only/close-position orders are exempt. Please try again." (-1008), This indicates the node has exceeded its maximum concurrency and is temporarily throttled. Close-position, reduce-only, and cancel orders are exempt and will not receive this error.

HTTP 503 Status: Message Variants & Handling

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A. “Unknown error, please check your request or try again later.” (Execution status unknown)

• Meaning: Request accepted but no response before timeout; execution may have succeeded.
• Handling:
  • Do not treat as immediate failure; first verify via WebSocket updates or orderId queries to avoid duplicates.
  • During peaks, prefer single orders over batch to reduce uncertainty.
• Rate-limit counting: May or may not count, check header to verify rate limit info

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B. “Service Unavailable.” (Failure)

• Meaning: Service temporarily unavailable; 100% failure.
• Handling: Retry with exponential backoff (e.g., 200ms → 400ms → 800ms, max 3–5 attempts).
• Rate-limit counting: not counted

---

C. “Request throttled by system-level protection. Reduce-only/close-position orders are exempt. Please try again.” (-1008, Failure)

• Meaning: System overload; 100% failure.
• Handling: Retry with backoff and reduce concurrency;
• Applicable endpoints:
  • POST /fapi/v1/order / POST /dapi/v1/order / POST /papi/v1/order
  • POST /fapi/v1/batchOrders / POST /dapi/v1/batchOrders / POST papi/v1/batchOrders
• Rate-limit counting: Not counted (overload protection).
• Exception integrated here: When a request reduces exposure (Reduce-only / Close-position: closePosition = true, or positionSide = BOTH with reduceOnly = true, or LONG+SELL, or SHORT+BUY), it is not affected or prioritized under -1008 to ensure risk reduction.
  • Covered endpoints: POST /fapi/v1/order、POST /dapi/v1/order、POST /papi/v1/order、POST /fapi/v1/batchOrders、POST /dapi/v1/batchOrders、POST /papi/v1/batchOrders (when parameters satisfy the condition)

Error Codes and Messages

• Any endpoint can return an ERROR
• Specific error codes and messages defined in Error Codes.

General Information on Endpoints

• 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.

LIMITS

• A 429 will be returned when either rate limit is violated.

Binance has the right to further tighten the rate limits on users with intent to attack.

IP Limits

• Every request will contain X-MBX-USED-WEIGHT-(intervalNum)(intervalLetter) in the response headers which has the current used weight for the IP for all request rate limiters defined.
• 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.
• The limits on the API are based on the IPs, not the API keys.
• Portfolio Margin IP Limit is 6000/min.

It is strongly recommended to use websocket stream for getting data as much as possible, which can not only ensure the timeliness of the message, but also reduce the access restriction pressure caused by the request.

Order Rate Limits

• Every order response will contain a X-MBX-ORDER-COUNT-(intervalNum)(intervalLetter) header which has the current order count for the account for all order rate limiters defined.
• Rejected/unsuccessful orders are not guaranteed to have X-MBX-ORDER-COUNT-** headers in the response.
• The order rate limit is counted against each account.
• Portfolio Margin Order Limits are 1200/min.

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 X-MBX-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 TRADE only, while another API-key can access everything except for TRADE routes.
• By default, API-keys can access all secure routes.

Security Type	Description
NONE	Endpoint can be accessed freely.
TRADE	Endpoint requires sending a valid API-Key and signature.
USER_DATA	Endpoint requires sending a valid API-Key and signature.
USER_STREAM	Endpoint requires sending a valid API-Key and signature.

SIGNED (TRADE and USER_DATA) Endpoint Security

• SIGNED endpoints require an additional parameter, signature, to be sent in the query string or request body.
• Endpoints use HMAC SHA256 signatures. The HMAC SHA256 signature is a keyed HMAC SHA256 operation. Use your secretKey as the key and totalParams as the value for the HMAC operation.
• The signature is not case sensitive.
• Please make sure the signature is the end part of your query string or request body.
• totalParams is defined as the query string concatenated with the request body.

Timing security

• A SIGNED endpoint also requires a parameter, timestamp, to be sent which should be the millisecond timestamp of when the request was created and sent.
• An additional parameter, recvWindow, may be sent to specify the number of milliseconds after timestamp the request is valid for. If recvWindow is not sent, it defaults to 5000. recvWindow cannot exceed 60000.
• If the server determines that the timestamp sent by the client is more than one second in the future of the server time, the request will also be rejected.

Serious trading is about timing. Networks can be unstable and unreliable, which can lead to requests taking varying amounts of time to reach the servers. With recvWindow, you can specify that the request must be processed within a certain number of milliseconds or be rejected by the server.

It is recommended to use a small recvWindow of 5000 or less! The max cannot go beyond 60,000!

SIGNED Endpoint Examples for POST /papi/v1/um/order

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	22BjeOROKiXJ3NxbR3zjh3uoGcaflPu3VMyBXAg8Jj2J1xVSnY0eB4dzacdE9IWn
secretKey	YtP1BudNOWZE1ag5uzCkh4hIC7qSmQOu797r5EJBFGhxBYivjj8HIX0iiiPof5yG

Parameter	Value
symbol	BTCUSDT
side	BUY
type	LIMIT
timeInForce	GTC
quantity	1
price	2000
recvWindow	5000
timestamp	1611825601400

Example 1: As a request body

Example 1

HMAC SHA256 signature:

    $ echo -n "symbol=BTCUSDT&side=BUY&type=LIMIT&timeInForce=GTC&quantity=1&price=2000&recvWindow=5000&timestamp=1611825601400" | openssl dgst -sha256 -hmac "YtP1BudNOWZE1ag5uzCkh4hIC7qSmQOu797r5EJBFGhxBYivjj8HIX0iiiPof5yG"
    (stdin)= 7c12045972f6140e765e0f2b67d28099718df805732676494238f50be830a7d7

curl command:

    (HMAC SHA256)
    $ curl -H "X-MBX-APIKEY: 22BjeOROKiXJ3NxbR3zjh3uoGcaflPu3VMyBXAg8Jj2J1xVSnY0eB4dzacdE9IWn" -X POST 'https://papi.binance.com/papi/v1/order' -d 'symbol=BTCUSDT&side=BUY&type=LIMIT&timeInForce=GTC&quantity=1&price=2000&recvWindow=5000&timestamp=1611825601400&signature=7c12045972f6140e765e0f2b67d28099718df805732676494238f50be830a7d7'
    

• requestBody:

symbol=BTCUSDT &side=BUY
&type=LIMIT
&timeInForce=GTC
&quantity=1
&price=2000
&recvWindow=5000
&timestamp=1611825601400

Example 2: As a query string

Example 2

HMAC SHA256 signature:

    $ echo -n "symbol=BTCUSDT&side=BUY&type=LIMIT&timeInForce=GTC&quantity=1&price=2000&recvWindow=5000&timestamp=1611825601400" | openssl dgst -sha256 -hmac "YtP1BudNOWZE1ag5uzCkh4hIC7qSmQOu797r5EJBFGhxBYivjj8HIX0iiiPof5yG"
    (stdin)= 7c12045972f6140e765e0f2b67d28099718df805732676494238f50be830a7d7

curl command:

    (HMAC SHA256)
   $ curl -H "X-MBX-APIKEY: 22BjeOROKiXJ3NxbR3zjh3uoGcaflPu3VMyBXAg8Jj2J1xVSnY0eB4dzacdE9IWn" -X POST 'https://papi.binance.com/papi/v1/order?symbol=BTCUSDT&side=BUY&type=LIMIT&timeInForce=GTC&quantity=1&price=2000&recvWindow=5000&timestamp=1611825601400&signature=7c12045972f6140e765e0f2b67d28099718df805732676494238f50be830a7d7'

• queryString:

  symbol=BTCUSDT
  &side=BUY
  &type=LIMIT
  &timeInForce=GTC
  &quantity=1
  &price=2000
  &recvWindow=5000
  &timestamp=1611825601400

Example 3: Mixed query string and request body

Example 3

HMAC SHA256 signature:

   $ echo -n "symbol=BTCUSDT&side=BUY&type=LIMIT&timeInForce=GTCquantity=0.01&price=2000&recvWindow=5000&timestamp=1611825601400" | openssl dgst -sha256 -hmac "YtP1BudNOWZE1ag5uzCkh4hIC7qSmQOu797r5EJBFGhxBYivjj8HIX0iiiPof5yG"
    (stdin)= fa6045c54fb02912b766442be1f66fab619217e551a4fb4f8a1ee000df914d8e 

curl command:

    (HMAC SHA256)
    $ curl -H "X-MBX-APIKEY: 22BjeOROKiXJ3NxbR3zjh3uoGcaflPu3VMyBXAg8Jj2J1xVSnY0eB4dzacdE9IWn" -X POST 'https://papi.binance.com/papi/v1/order?symbol=BTCUSDT&side=BUY&type=LIMIT&timeInForce=GTC' -d 'quantity=0.01&price=2000&recvWindow=5000&timestamp=1611825601400&signature=fa6045c54fb02912b766442be1f66fab619217e551a4fb4f8a1ee000df914d8e'

• queryString:

symbol=BTCUSDT&side=BUY&type=LIMIT&timeInForce=GTC

• requestBody:

quantity=1&price=2000&recvWindow=5000&timestamp=1611825601400

Note that the signature is different in example 3. There is no & between "GTC" and "quantity=1".

RSA Keys - SIGNED Endpoint Examples for POST /papi/v1/um/order

• This will be a step by step process how to create the signature payload to send a valid signed payload.
• We support PKCS#8 currently.
• To get your API key, you need to upload your RSA Public Key to your account and a corresponding API key will be provided for you.

For this example, the private key will be referenced as test-prv-key.pem

Key	Value
apiKey	vE3BDAL1gP1UaexugRLtteaAHg3UO8Nza20uexEuW1Kh3tVwQfFHdAiyjjY428o2

Parameter	Value
symbol	BTCUSDT
side	BUY
type	LIMIT
timeInForce	GTC
quantity	1
price	2000
recvWindow	5000
timestamp	1611825601400

Step 1: Construct the payload

Arrange the list of parameters into a string. Separate each parameter with a &.

Step 2: Compute the signature:

2.1 - Encode signature payload as ASCII data.

Step 2.2

 $ echo -n 'timestamp=1671090801999&recvWindow=9999999&symbol=BTCUSDT&side=SELL&type=MARKET&quantity=1.23' | openssl dgst -keyform PEM -sha256 -sign ./test-prv-key.pem

2.2 - Sign payload using RSASSA-PKCS1-v1_5 algorithm with SHA-256 hash function.

Step 2.3

$ echo -n 'timestamp=1671090801999&recvWindow=9999999&symbol=BTCUSDT&side=SELL&type=MARKET&quantity=1.23' | openssl dgst -keyform PEM -sha256 -sign ./test-prv-key.pem | openssl enc -base64
aap36wD5loVXizxvvPI3wz9Cjqwmb3KVbxoym0XeWG1jZq8umqrnSk8H8dkLQeySjgVY91Ufs%2BBGCW%2B4sZjQEpgAfjM76riNxjlD3coGGEsPsT2lG39R%2F1q72zpDs8pYcQ4A692NgHO1zXcgScTGgdkjp%2Brp2bcddKjyz5XBrBM%3D

2.3 - Encode output as base64 string.

Step 2.4

$  echo -n 'timestamp=1671090801999&recvWindow=9999999&symbol=BTCUSDT&side=SELL&type=MARKET&quantity=1.23' | openssl dgst -keyform PEM -sha256 -sign ./test-prv-key.pem | openssl enc -base64 | tr -d '\n'
aap36wD5loVXizxvvPI3wz9Cjqwmb3KVbxoym0XeWG1jZq8umqrnSk8H8dkLQeySjgVY91Ufs%2BBGCW%2B4sZjQEpgAfjM76riNxjlD3coGGEsPsT2lG39R%2F1q72zpDs8pYcQ4A692NgHO1zXcgScTGgdkjp%2Brp2bcddKjyz5XBrBM%3D

2.4 - Delete any newlines in the signature.

Step 2.5

aap36wD5loVXizxvvPI3wz9Cjqwmb3KVbxoym0XeWG1jZq8umqrnSk8H8dkLQeySjgVY91Ufs%2BBGCW%2B4sZjQEpgAfjM76riNxjlD3coGGEsPsT2lG39R%2F1q72zpDs8pYcQ4A692NgHO1zXcgScTGgdkjp%2Brp2bcddKjyz5XBrBM%3D

2.5 - Since the signature may contain / and =, this could cause issues with sending the request. So the signature has to be URL encoded.

Step 2.6

 curl -H "X-MBX-APIKEY: vE3BDAL1gP1UaexugRLtteaAHg3UO8Nza20uexEuW1Kh3tVwQfFHdAiyjjY428o2" -X POST 'https://papi.binance.com/papi/v1/um/order?timestamp=1671090801999&recvWindow=9999999&symbol=BTCUSDT&side=SELL&type=MARKET&quantity=1.23&signature=aap36wD5loVXizxvvPI3wz9Cjqwmb3KVbxoym0XeWG1jZq8umqrnSk8H8dkLQeySjgVY91Ufs%2BBGCW%2B4sZjQEpgAfjM76riNxjlD3coGGEsPsT2lG39R%2F1q72zpDs8pYcQ4A692NgHO1zXcgScTGgdkjp%2Brp2bcddKjyz5XBrBM%3D'

2.6 - curl command

Bash script

#!/usr/bin/env bash
# Set up authentication:
apiKey="vE3BDAL1gP1UaexugRLtteaAHg3UO8Nza20uexEuW1Kh3tVwQfFHdAiyjjY428o2"   ### REPLACE THIS WITH YOUR API KEY
# Set up the request:
apiMethod="POST"
apiCall="v1/order"
apiParams="timestamp=1671090801999&recvWindow=9999999&symbol=BTCUSDT&side=SELL&type=MARKET&quantity=1.23"
function rawurlencode {
    local value="$1"
    local len=${#value}
    local encoded=""
    local pos c o
    for (( pos=0 ; pos<len ; pos++ ))
    do
        c=${value:$pos:1}
        case "$c" in
            [-_.~a-zA-Z0-9] ) o="${c}" ;;
            * )   printf -v o '%%%02x' "'$c"
        esac
        encoded+="$o"
    done
    echo "$encoded"
}
ts=$(date +%s000)
paramsWithTs="$apiParams&timestamp=$ts"
rawSignature=$(echo -n "$paramsWithTs" \
               | openssl dgst -keyform PEM -sha256 -sign ./test-prv-key.pem \  ### THIS IS YOUR PRIVATE KEY. DO NOT SHARE THIS FILE WITH ANYONE.
               | openssl enc -base64 \
               | tr -d '\n')
signature=$(rawurlencode "$rawSignature")
curl -H "X-MBX-APIKEY: $apiKey" -X $apiMethod \
    "https://papi.binance.com/papi/$apiCall?$paramsWithTs&signature=$signature"

A sample Bash script containing similar steps is available in the right side.