August 14, 2020 Update: Please note that the API Documentation Resolver and the Object Visibility Debugger have been deprecated and are no longer available.
We've launched a new suite of debugging tools, including an API documentation resolver to connect you to the related documentation quickly and two tools to help you identify and fix bugs.
When working with the Graph API, many common issues can be solved by reviewing documentation and checking the valid fields, parameters, or permissions required for a particular endpoint. The API Documentation Resolver can instantly provide you with the relevant documentation page based on your API request, saving you time.
When querying certain objects via the Graph API, you may encounter the “unsupported get request” response, which suggests you can't access the object. However, the reasons for that may not be clear.
The Object Visibility Debugger tool may help you better understand why a particular object is not available.
When your Messenger bot doesn't work as expected, the cause can often be traced to the setup and/or handling of Webhooks. Our new Recent Errors tool allows you to check the logs on Facebook's side to see any errors with Webhook delivery.
To use this tool, head to the Messenger section of the App Dashboard, and under the Webhooks section, you can launch the tool by clicking “show recent errors”.
We hope these tools will provide more power to your development projects. We welcome any feedback, which can be submitted via a short survey within each tool.