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SMMRY is accessible by an API. Developers are able to implement SMMRY into applications that may require a summary of a webpage or variable. Developers need to generate an API key to access this feature.

To receive an API key, you need a Partner account. Get a partner account here and an API key will be generated automatically.

The API request must be made to The response is encoded in JSON.

Here are the possible parameters placed in the request URL.

&SM_API_KEY=N       // Mandatory, N represents your registered API key.
&SM_URL=X           // Optional, X represents the webpage to summarize.
&SM_LENGTH=N        // Optional, N represents the number of sentences returned, default is 7
&SM_KEYWORD_COUNT=N // Optional, N represents how many of the top keywords to return
&SM_QUOTE_AVOID     // Optional, summary will not include quotations
&SM_WITH_BREAK      // Optional, summary will contain string [BREAK] between each sentence

Here are the possible indexes of the array returned by JSON.

$result = json_decode($response, true);
$result['sm_api_message'];        // Contains notices, warnings, and error messages.
$result['sm_api_character_count'];// Contains the amount of characters of summary content that might have been returned
$result['sm_api_title'];          // Contains the title when possible
$result['sm_api_content'];        // Contains the summary
$result['sm_api_keyword_array'];  // Contains an array of the top ranked keywords in descending order
$result['sm_api_error'];          // Contains error number to indicate kind of error

//Error Number Descriptions:

//0 - Internal server problem which isn't your fault
//Recommended behaviour is to try again later

//1 = Incorrect submission variables
//Cease making API requests and review documentation

//2 - Intentional restriction (low credits/disabled API key/banned API key)
//Cease making API requests until you visit the partner page to lift the restriction

//3 - Summarization error
//Review the length and validity of the articles being submitted if this error occurs frequently.

cURL or an equivalent function/library must either send the article variable as POST data labeled sm_api_input or specify a URL with &SM_URL=X. If both are given the latter is used.

Here is an example of PHP using cURL to summarize a variable:

$long_article = "Long article text goes here";

$ch = curl_init("");
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Expect:"));
// IMPORTANT! Without ^this^ any article over 1000 characters will make SMMRY throw a 417 http error
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, "sm_api_input=".$long_article);// Your variable is sent as POST
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);
curl_setopt($ch, CURLOPT_TIMEOUT, 20);
$return = json_decode(curl_exec($ch), true);//You're summary is now stored in $return['sm_api_content'].

And here we summarize an external webpage:

$ch = curl_init("");
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT,20);
curl_setopt($ch, CURLOPT_TIMEOUT,20);
$return = json_decode(curl_exec($ch), true);//You're summary is now stored in $return['sm_api_content'].

The maximum number of sentences returned is 40. When using SM_WITH_BREAK, make sure to replace the [BREAK] strings with whatever you want to seperate each sentence (’/n’, ‘’ etc). Also, make sure any webpage URL sent to summarize is accessible to SMMRY, pages requiring authentication won’t do.

There are two active modes of the API, Limited and Full:

Limited: A limit of 100 free API requests can be made daily, and each request must be at least 10 seconds apart. If a request was made too soon, the API script will wait the required time until fulfilling the request.

Full: An unlimited amount of requests can be made with no articifical time limit in between. 1 credit costs $0.001, or a tenth of a cent. It costs approximately 1 credit per 500 characters returned by the API (only summary content is counted). It costs an additional 8 credits if the article has not been previously submitted and cached by the algorithm, that way re-summarizing the same article is cheaper. When credit costs are being calculated, decimals are rounded upwards.

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