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app/modules/agent/prompts/docs_examples/incremental_update_example.md

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+# API Client Module
+
+## Purpose
+This document explains how the API client authenticates and retries requests.
+
+## Current Behavior
+- Access token is fetched before outbound request.
+- Retry policy uses exponential backoff for transient failures.
+
+## Recent Increment (v2)
+### Added cache for tokens
+- Token is cached in memory for a short TTL.
+- Cache invalidates on 401 responses.
+
+### Operational impact
+- Reduced auth latency for repetitive calls.
+- Fewer token endpoint requests.
+
+## Limitations
+- Single-process cache only.
+- No distributed cache synchronization.