anthropic
#10154
input_validation_error
At least one message is required. Please ensure your input includes one or more messages.
This error has been identified and solved.
Reason
The HTTP 400 Bad Request error in the Anthropic API with the message "messages: at least one message is required" indicates that the request is missing a necessary component. Here are the key reasons for this error:
Missing Required Parameters: The API expects a
messagesfield in the request body, but it is either absent or empty. This field is essential for the API to process the request correctly.Invalid Request Format: The request body may not adhere to the expected JSON structure, specifically lacking the required
messagesfield or containing emptytextcontent blocks.Client Error: The error suggests a client-side issue where the request does not meet the API's validation criteria, such as having non-empty text content blocks in the messages.
Solution
To fix the HTTP 400 Bad Request error in the Anthropic API with the message "messages: at least one message is required," you need to ensure your request is properly formatted and includes all necessary parameters.
Review the API documentation to ensure you are including the required
messagesfield in your request body.Check that the
messagesfield contains at least one non-empty text content block.Verify that your request body adheres to the expected JSON structure.
Inspect the error response for specific details about what is missing or malformed in your request.
By addressing these points, you can correct the issues causing the 400 error.
Suggested Links
https://github.com/continuedev/continue/issues/2006
https://www.googlecloudcommunity.com/gc/AI-ML/Unexpected-400-errors-with-Generated-Output-Schema/m-p/808440
https://www.restack.io/p/anthropic-answer-http-400-bad-request-cat-ai
https://community.openai.com/t/content-is-required-property-error-400/486260
https://forum.cursor.com/t/unable-to-reach-anthropic/22766
https://support.anthropic.com/en/articles/10366432-i-m-getting-an-api-connection-error-how-can-i-fix-it
https://community.openai.com/t/request-failed-with-status-code-400/39242/25
https://github.com/cline/cline/issues/261
