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AuthorXinye Tang, Wei Sun

LLM applications often fail because the model gets the wrong information in the wrong form at the wrong time. That's a context problem, and it can't be solved with a prompt. Hands-On Context Engineering helps you design an inspectable, debuggable, and reliable context system that uses techniques like prompting, RAG, and agents to manage and deliver the right context to the model exactly when it needs it.

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Whole-book reading guide from stratified index samples; jump to passages in the text

Brief outline
【One-Line Pitch】 LLM applications often fail because the model gets the wrong information in the wrong form at the wrong time. That's … 【Book Arc】 - **Opening (~0%–12%)**: 书名: Hands-On Context Engineering (for .; th such licenses and/or rights. - **Early (~12%–35%)**: y works from a single instruction and a single user message.; But for this customer, it could be wrong. - **Middle (~35%–65%)**: most visible part of the context, but rarely the only part.; nd relevance score is a more useful context item. - **Late (~65%–88%)**: simple: build the first version of Loopmend Support Copilot.; ry root, run python chapters/ch02_baseline_pipeline/run.py . - **Ending (~88%–100%)**: It is better to discover too much and narrow later than to fail before an important item ever becomes visible.; Some context items should not compete with product docs or old tickets. 【Key Takeaways】 - **书名: Hands-On Context E…** (Opening): 书名: Hands-On Context Engineering (for . - **th such licenses and/o…** (Opening): th such licenses and/or rights. - **Warning This element i…** (Opening): Warning This element indicates a warning or caution. - **y works from a single…** (Early): y works from a single instruction and a single user message. - **But for this customer** (Early): But for this customer, it could be wrong. - **, fail to reason over…** (Early): , fail to reason over evidence, or produce an unsafe answer. 【Reading Tips】 - Use Passage locations below to jump into the text and set reading anchors - If this is a brief outline, click Regenerate (top right) for a synthesized guide 【Coverage Limits】 Compressed outline without the model (~33 index chunks). Full structured guide needs AI available.
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eilly logo is a registered trademark of O’Reilly Media, Inc. Hands-On Context Engineering , the cover image, and related trade dress are trademarks of O’Reil...
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ht first response. But for this customer, it could be wrong. What if the customer belongs to a workspace that uses Okta single sign-on? In that case, resetti...
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se. Irrelevant context can distract the model from the task. It can cause the model to mention details that do not matter, follow the wrong thread of reasoni...
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the simple sign-in problem because it is easy to understand. Later chapters will add more realistic complexity: retrieval over product docs, tool calls over ...
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ot only text. It has structure. It has source. It has scope. It has visibility. In later chapters, we will make those properties more explicit and use them t...
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eve , select , process , assemble , generate , and inspect . data/loopmend/ Contains local demo data for Loopmend accounts, docs, tickets, release notes, and...
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decision changes the information environment for the model. When those decisions are visible, the system becomes much easier to improve. Table 2-5. Caption f...
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normalize enough to keep the packet readable. Example 2-10. Processing selected context def process(items: list[ContextItem], trace: ContextTrace | None = No...
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Tags
AI categories
AI
Publish Year: 2026
Language: English
File Format: EPUB
File Size: 1.9 MB