{"slug": "context-window-exceeded-at-turn-23-here-s-how-i-track-token-usage-without-a", "title": "Context window exceeded at turn 23. Here's how I track token usage without a tokenizer.", "summary": "A developer building an agent for the Hermes Agent Challenge encountered a context window overflow error at turn 23, with no warning or graceful handling before the API exception. To prevent future crashes, the engineer implemented token usage tracking without a tokenizer, enabling proactive monitoring of context consumption.", "body_md": "*This is a submission for the Hermes Agent Challenge.*\n\nMy Hermes agent's context window fills up gradually. Each turn adds messages. Tool call results add more. After 23 turns, the API returned a context length error — with no warning, no graceful handling, just an exception in the middle of a synthesis step.", "url": "https://wpnews.pro/news/context-window-exceeded-at-turn-23-here-s-how-i-track-token-usage-without-a", "canonical_source": "https://dev.to/mukundakatta/context-window-exceeded-at-turn-23-heres-how-i-track-token-usage-without-a-tokenizer-2cm1", "published_at": "2026-05-25 21:21:14+00:00", "updated_at": "2026-05-25 21:33:37.053450+00:00", "lang": "en", "topics": ["ai-agents", "large-language-models", "ai-tools"], "entities": ["Hermes"], "alternates": {"html": "https://wpnews.pro/news/context-window-exceeded-at-turn-23-here-s-how-i-track-token-usage-without-a", "markdown": "https://wpnews.pro/news/context-window-exceeded-at-turn-23-here-s-how-i-track-token-usage-without-a.md", "text": "https://wpnews.pro/news/context-window-exceeded-at-turn-23-here-s-how-i-track-token-usage-without-a.txt", "jsonld": "https://wpnews.pro/news/context-window-exceeded-at-turn-23-here-s-how-i-track-token-usage-without-a.jsonld"}}