API Request Lifecycle Flowchart Flowchart Template
Auth → rate limit → processing → response → retry, end-to-end.
When to Use This Template
Use this template when you need to document or design your API request handling.
What You Input
A complete API request lifecycle flowchart from request to response.
What You Get
A clear flowchart showing your API request lifecycle.
Template ContentCopy and customize
Client sends API request. Validate request format. If invalid, return 400 Bad Request. Check authentication token. If token missing, return 401 Unauthorized. If token expired, return 401 with refresh hint. Check authorization permissions. If not authorized, return 403 Forbidden. Check rate limit. If limit exceeded, return 429 Too Many Requests. Process request. If processing error, return 500 Internal Error. If resource not found, return 404 Not Found. Return 200 OK with response data. Log request for analytics.
How to Use This Template
- 1Click "Use This Template" to open the flowchart generator with pre-filled example text.
- 2Edit the authentication methods, rate limits, and error responses to match your API.
- 3Click generate to create your flowchart, then export as an image or copy to share.
Frequently Asked Questions
Can I add different flows for different HTTP methods?
Yes, describe method-specific handling (e.g., "If POST, validate request body").
How do I show async processing?
Describe async patterns and the flowchart will represent queuing and callbacks.
Can I include caching logic?
Yes, add cache check and cache update steps to your API flow description.