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◆ AI Learning · Hard rule

How many times should an AI model try to call an external API?

An AI model makes only one attempt to call an external API. The AI model does not retry failed calls. The AI model stops and reports an error if the call fails.

By Pawan Nayar · from the LLOS AI Learning record

The rule

An AI model makes only one attempt to call an external API.

The AI model does not retry failed calls. The AI model stops and reports an error if the call fails.

An AI model should try to call an external API only one time. This rule applies to APIs like Gemini or OpenAI. It also applies to any API that limits how many calls a user can make. If the call fails, the AI model must show the error. The AI model must then stop trying to call the API. The AI model must not try again later. The AI model must not use a loop to make multiple attempts. The AI model must not wait and then try again. All parts of the system must share one queue for API calls. This prevents too many calls at once.

A developer creates an AI model that calls an external translation API. The developer adds code to retry the API call three times if it fails. The translation API has a limit on calls per minute. The AI model makes many calls at once. Many calls fail and are retried. The external API provider temporarily bans the developer's API key. The project cannot use the translation service.

Words you'll need

Resolved from this lesson's own record — real definitions, not invented for this page.

Fault Tolerance

System keeps working even when parts break

Failure Modes

Ways an AI system can give you wrong answers

Resource Management

Deciding what computing power the AI actually needs

Failure Detection

Spotting when the AI gets it wrong

Questions people ask

More from the same record, pulled by shared topic — not written new for this page.

How should a developer handle errors when calling an external API?

When a developer's code calls an external API, it should try only one time. The developer must not use loops to retry the call.

When should a developer use the Batch API, and what are the risks?

The Batch API is best for tasks with more than 50,000 calls. The cost savings must be worth a 24 to 48-hour wait time.

What happens when a user sends too many requests to a system?

When a user sends too many requests, the system stops all new requests from that user. This is called a 'hard stop'.

How can a developer test for common errors in an AI application?

A developer should test specific error scenarios. First, turn off the server and try to access the application.

What to remember

An AI model makes only one attempt to call an external API. The AI model does not retry failed calls. The AI model stops and reports an error if the call fails.