Developer portal or documentation site UI design. Usability and graphics are both important.
Use company branding and content creation guidelines. But remember, your audience is much more technical than the average customer.
Depending on developer portal capabilities and API -specific configuration developers can subscribe access to APIs with
All human readable API documentation pages should be created automatically from API productization and OpenAPI documents. Masters should be stored and edited using version control, not just in the developer portal / documentation site.
Content, language, what information is shared, which channels and formats are used, etc. should be planned and optimized for your developer community.
Terms and conditions for using our APIs are important. Remember to create them together with business, legal and technology people. They need to address privacy and re-use, service levels and data ownership. Try to still keep them understandable.
You can create SDKs or provide code snippets. Remember that not all developers undestand cURL and that maintaining SDK will require work. Your Developer Portal may provide you a way to generate code snippets automatically from an Open API definition.
Presentations and demos help developers understand what they can use the API for. They may also need help in using the tools or figuring out the authentication. so make sure you address that, too.
Think how you are going to collect feedback and feature suggestions.
Some additional things that can impact developer experience:
Pay a few moments of attention to how your API Consuming applications and developers need to authenticate to your APIs and your developer portal. Your priority maybe to make it very easy, but remember to make it secure enough.