What is an API (interface)?
To give a common example, after placing an order and paying on JD.com, the merchant chooses SF Express to deliver the goods, and then you can view the current logistics information in real time on JD.com. JD.com and SF Express are two independent companies. Why do you see SF Express’s express delivery information in real time on JD.com? This requires the use of APIs. When viewing your own express delivery information, JD.com can use the API interface provided by SF Express to retrieve it in real time. The information is presented on its own website. In addition, you can also enter the order number on Express 100 to check the express information. As long as there is cooperation or permission, other companies can retrieve express delivery information through the API interface provided by SF Express. Since there are multiple calls, it will be much more convenient to provide a unified call specification.
Let's see how Baidu defines the API:
API (Application Programming Interface, application programming interface) are some predefined functions, the purpose is to provide applications and developers with the ability to access a set of routines based on a piece of software or hardware, without accessing the source code, or understanding the inner workings Mechanism details.
free API
Two elements of ID card - real-name authentication : Real-name verification of two elements of ID card, input name and ID number, and verify whether the two elements are consistent. Accurate real-time verification, 99.99% accuracy rate.
Weather warning : Support input of latitude and longitude or area code to obtain all kinds of weather warnings currently in effect for a specified city, such as blue cold wave warning signal, or pull all weather warnings in effect across the country at one time.
Weather Forecast Inquiry : Inquire about the weather in many cities across the country and around the world, including 15-day weather forecast inquiry.
Mobile phone number attribution : You can query the province, city, operator area code, administrative division code and other information based on the mobile phone number. Hundreds of millions of data include the latest 170, 166, 147 and other segments, which are updated in a timely manner and with high accuracy.
Basic information of the enterprise : Obtain the basic information of the enterprise through the company name/company ID/registration number or social unified credit code. The basic information of the enterprise includes the company name or ID, type, date of establishment, business status, registered capital, legal person, business registration number, unified Field information such as social credit code, organization code, and taxpayer identification number.
National express logistics query : currently supports express information query of 600+ express companies. Automatically identify the courier company and tracking number, the server responds in milliseconds, and the data is timely and accurate.
IP attribution-IPv4 district and county level : Query the attribution information according to the IP address, including 4.3 billion full IPv4, support to the district and county level in China (excluding Hong Kong and Taiwan), including operator data.
IP attribution-IPv6 district and county level : Query the attribution information according to the IP address (IPv6 version), including country, province, city, district and county, and operator information.
National express logistics map trajectory query : [H5 logistics trajectory, tracking number identification] automatically evaluates the logistics timeliness through the logistics tracking number and receiving and sending address, and displays the package transportation trajectory on the map. Including SF, YTO, STO and other mainstream express companies.
SMS verification code : supports three major operators, supports large capacity and high concurrency.
Notification SMS : SMS notification supports the three major operators and virtual operators.
Enterprise qualification certificate : Obtain enterprise qualification certificate information through company name or ID. Enterprise qualification certificate information includes detailed information on fields such as certificate type, certificate number, and certificate issuance date.
Secondary Number Query : Check whether you have entered the network twice through the mobile phone number, and directly connect to the three major operators for accurate query.
Empty number detection : Query its online activity through the mobile phone number, and return status including empty number and downtime.
Mobile phone online status : support the input of the numbers of the three major operators, query the online status of the mobile phone number, and return the online status.
Weather Forecast Inquiry : Supports weather inquiries in many cities across the country and around the world, including 15-day weather forecast inquiries.
Air quality query : Support the hourly observation of 3400+ cities in China, and obtain the air quality of the designated city.
Today in History : See what major events happened today in history.
Perpetual calendar : Obtain the lunar calendar corresponding to the Gregorian calendar date, the solar terms of the lunar calendar, the year, month and day of the heavenly stems and earthly branches, zodiac signs, taboos, constellations and other information. Support for querying the next 15 days.
Voice notification text message: initiate a direct phone call through the system and play the notification content; the notification content can be customized, and variables are supported
Zodiac query : According to the name of the zodiac, query the detailed information of the zodiac, including: five elements analysis, natal Buddha, birthday, auspicious color, lucky number, lucky flower, personality and other information. Very comprehensive.
What to Eat Today : Randomly return a delicious meal to solve the puzzle of what you eat today.
Famous quotes and epigrams : Get various types of famous quotes, covering life, inspirational, reading and many other aspects.
Idiom Encyclopedia : Idiom Encyclopedia provides idiom explanation, idiom usage, idiom source and other inquiries.
Encyclopedia of Allegory : Randomly return N interesting and amusing allegories.
Standard weight calculator : Body Mass Index (BMI for short), calculate whether your body is standard through height and weight.