Here are the calls in the raak.it URL shortener API:

The API is a RESTful API, ie each call is implemented as a URI.
All calls return JSON strings as output.

register.php

http://raak.it/register.php?url=your url

your url: The URL you want to shorten.

output:

• code: 0 on success, a negative value on error, translating to:
  • -1: No URL was entered
  • -2: URL could not be resolved
  • -3: URL returned an error
  • -4: Cannot connect to the database
  • -5: Cannot select the database
  • -6: Cannot query the database
  • -7: URL was stored before, but it can not be fetched
  • -8: URL was not stored before, and it can not be entered into the database
  • -9: URL’s page title could not be updated
• result: only on success, the short URL that will redirect to the given URL
• error: only on error, a message describing the error
• http_code: only on error code -2, the HTTP code returned
• mysql_error: only on error codes -4 to -9, a message describing the database error

retrieve.php

http://raak.it/retrieve.php?shorturl=short url

short url: The short URL whose long URL you want to retrieve.

output:

• code: 0 on success, a negative value on error, translating to:
  • -1: No short URL was entered
  • -4: Cannot connect to the database
  • -5: Cannot select the database
  • -6: Cannot query the database
  • -8: Cannot update this retrieval stat (still returns URL)
  • -9: URL can not be found
• result: only on success, or error code -8, the long URL that will be redirected to by the given short URL
• error: only on error, a message describing the error
• mysql_error: only on error codes -4 to -8, a message describing the database error

stats.php

http://raak.it/stats.php?[url=long url][shorturl=short url]

long url (optional): The long URL whose stats you want to retrieve.
short url (optional): The short URL whose stats you want to retrieve.
default (no args): Basic stats (no ip addresses) for all URLs.

output:

• code: 0 on success, a negative value on error, translating to:
  • -1: No short URL was entered
  • -4: Cannot connect to the database
  • -5: Cannot select the database
  • -6: Cannot query the database
  • -9: URL can not be found
• urls: a list of URL stats
  • url hash: The hash part of the short url, acts as a key
    • url: The long URL
    • title: The page title of the URL
    • count: The amount of hits on the URL
    • ips: (only when shorturl or url have been provided) A list of IP address that visited this URL
• error: only on error, a message describing the error
• mysql_error: only on error codes -4 to -8, a message describing the database error