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API creation is the process of linking an existing backend API implementation to the API Publisher so that you can manage and monitor the API's lifecycle, documentation, security, community and subscriptions. Alternatively, you can provide the API implementation in-line in the API Publisher itself.

In this tutorial, you create an API using a production endpoint and publish it to the API Store.

Click the following topics for a description of the concepts that you need to know when creating an API:

| API visibility | Resources | Endpoints | Throttling tiers | Sequences | Response caching |

Let's get started. See the video tutorial here or a step-by-step walk-through of the video tutorial below.

Here's a step-by-step walk-though of the video tutorial:

  1. If you have not registered to the API Cloud yet, go to https://cloud.wso2.com/ and sign up. 
  2. Log in to the API Cloud and the API Publisher Web application will open automatically.
  3. Select the option to design a new API and click Start Creating.
  4. Give the information in the table below and click the Add button to add the resource.

    FieldSample value
    NamePhoneVerification
    Context

    /phoneverify

    Tip: You can define the API's version as a parameter of its context by adding the {version} into the context. For example, {version}/phoneverifyThe API Manager assigns the actual version of the API to the {version} parameter internally. For example, https://gateway.api.cloud.wso2.com:8243/t/companyn/1.0.0/phoneverify. Note that the version appears before the context, allowing you to group your APIs according to versions.

    Version1.0.0
    VisibilityPublic
    Resources
    • URL Pattern: CheckPhoneNumber
    • Request Types: GET, POST

  5. After the resource is added, expand its GET method, add the following parameters. You use them to invoke the API using our integrated API Console in later tutorials. Once done, click Implement.

    Parameter NameDescriptionParameter TypeData TypeRequired
    PhoneNumberGive the phone number to be validatedQueryStringTrue
    LicenseKeyGive the license key as 0 for testing purposeQueryStringTrue

  6. Click the Managed API option.

  7. The Implement tab opens. Give the information in the table below.

    FieldSample value
    Endpoint typeHTTP endpoint
    Production endpoint

    This sample service has two operations as CheckPhoneNumber and CheckPhoneNumbers. Let's use CheckPhoneNumber here.
    http://ws.cdyne.com/phoneverify/phoneverify.asmx

    To verify the URL, click the Test button next to it.

  8. Click Manage to go to the Manage tab and give the information in the table below.

    FieldSample valueDescription
    Tier AvailabilitySelect allThe API can be available at different level of service. They allow you to limit the number of successful hits to an API during a given period of time.

  9. Click Save & Publish. This will publish the API that you just created in the API Store so that subscribers can use it.

You have created an API.

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