Context Management
~3 min read
Concept & How It Works
Why Does It Exist?
Poor context management causes 'lost in the middle' failures, runaway costs, and truncated tool results that break agent reasoning.
Real-World Analogy
Context management is air traffic control for tokens — every piece of information needs a slot, or the system crashes.
Visual Workflows
What is Context Management?
Example
Scenario
A coding agent allocates 60% of context to current file + recent edits, 20% to retrieved docs, 10% to memory, 10% to system prompt — adjusting dynamically as files grow.
Solution
In Agent Memory, apply Context Management to this scenario: A coding agent allocates 60% of context to current file + recent edits, 20% to retrieved docs, 10% to memory, 10% to system prompt — adjusting dynamically as files grow. Identify the inputs, run the technique, validate the output, and note one thing you would monitor in production.
Practice Task
Do this before moving to the next module — reading alone is not enough.
Open the Code Walkthrough below and run it locally. Change one parameter related to Context Management (e.g. model, temperature, top_k, or tool name), observe the difference in output, and write 2–3 sentences explaining what changed.
Code Walkthrough
Highlighted lines show where Context Management happens in the code.
1# Context Management — minimal example2from openai import OpenAI3
4client = OpenAI() # create API client5
6# Ask the model to explain this topic7response = client.chat.completions.create( # core API call for Context Management8 model="gpt-4o-mini",9 messages=[10 {"role": "system", "content": "You explain context management clearly."},11 {"role": "user", "content": f"What is context management?"},12 ],13 temperature=0,14)15print(response.choices[0].message.content) # show output for debuggingCommands to Remember
Commands to Remember
pip install chromadb # vector store for long-term memorypip install redis # fast session / working memorypip install tiktoken # count tokens before injecting memory
Common Mistakes
- Treating Context Management as a black box without evaluation
- Ignoring cost and latency in production
- Skipping error handling for context management
Cheat Sheet
Quick recap — the most important points from this module.
Cheat Sheet
quick ref- •Context Management
- •Token Budget
- •Lost in the Middle
- •Context Caching