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5 Ways To Master Context For NEXT-LEVEL AI Performance

All About AI·
5 min read

Based on All About AI's video on YouTube. If you like this content, support the original creators by watching, liking and subscribing to their content.

TL;DR

Context management is the main performance lever as LLMs converge on similar core abilities.

Briefing

Context management is becoming the main lever for improving large language model output as models converge on similar capabilities. Instead of chasing ever-bigger prompts, the practical edge comes from feeding the right information—reliably, repeatedly, and with enough control that answers stay grounded in what matters to a specific project.

The simplest approach is copy-paste. Pull in a snippet of relevant text (or even an image) and include it directly in the model’s context, then ask for code or a task based on that material. It works quickly for one-off needs, including examples like pasting OpenAI-related material and then requesting code for “OpenAI GPT 4.1,” or doing the same with an image-based example. But copy-paste doesn’t scale well when the same context must be reused across sessions or projects.

For reuse, the workflow shifts to local, versionable context files. The recommended pattern is to create a documentation folder (for example, a “docs” directory) and store project-specific reference material as files such as “OpenAI docs.md.” Then the model can be prompted to use that file as context—often inside an IDE like Cursor—so the information is consistent and easy to update. This also supports multiple tagged files, letting teams build an indexed knowledge base upfront so new projects start with the right background material already staged.

Web search is the next step for dynamic context. Many tools integrate search directly into chat, enabling the model to fetch current information and return results with sources. The transcript highlights an example where a model searches Reuters and other outlets for major news items, then continues the workflow using the retrieved context and source links. The tradeoff is precision: leaving source selection to the model can pull in irrelevant material, and repeated searching can feel slow or redundant. Cursor’s web tool is also described as sometimes struggling, which reduces trust in the feature for frequent use.

To regain control, the transcript moves to custom MCP server tools that combine targeted search with controlled fetching. Using MCP connections such as “brave” and “fetch,” a user can steer the query (e.g., “find news on Ukraine May 15, 2025”), collect URLs from Brave, and then use Fetch to retrieve and render HTML from those pages. The retrieved content can then be summarized into a local artifact like “Ukraine.txt,” creating a repeatable pipeline from search → extraction → summarization.

The most advanced method is an MCP RAG (retrieval-augmented generation) server backed by a vector database. In the example, a “3JS vector search” MCP server indexes 3JS documentation into a vector store. When building a 3JS game and asking about “fog” or “textures,” the system queries the vector store and returns top documentation matches—such as linear vs. exponential fog examples—so the model can answer using project-relevant references without manually digging through documentation. The core message is that as LLMs become more similar, the biggest performance gains will come from dynamically and accurately retrieving relevant context from codebases, documentation, and curated knowledge stores—whether through local files, controlled web pipelines, or RAG servers.

Cornell Notes

As LLM capabilities converge, performance gains increasingly come from better context—not longer prompts. The transcript lays out five practical ways to gather context: quick copy-paste for one-offs, reusable local documentation files for repeat projects, integrated web search for current information (with source links but sometimes imprecise), controlled MCP pipelines that steer search and fetch specific pages, and an advanced MCP RAG setup using a vector store to retrieve the most relevant documentation snippets. The most powerful approach is the RAG server, which can pull targeted examples (e.g., 3JS fog and texture guidance) from an indexed documentation corpus, saving time and improving answer grounding. This matters because the right context—code, docs, and curated references—directly determines whether outputs are correct and actionable.

Why does copy-paste help, and why does it stop being enough?

Copy-paste is fast for one-off tasks: relevant text or even an image can be inserted into the model’s context, then the model can generate code or instructions based on that material (e.g., pasting OpenAI-related content and requesting “GPT 4.1” code). The limitation is reuse: once the same context is needed repeatedly across sessions or projects, manual copy-paste becomes inefficient and error-prone.

How do local documentation files improve reliability and reuse?

Local files make context persistent and editable. The workflow described is to create a “docs” folder in an editor like Cursor, store reference material such as “OpenAI docs.md,” and then prompt the model to use those files as context. Because the documentation is organized into multiple files, it can be tagged and updated over time, enabling smoother project starts and consistent answers across future prompts.

What’s the upside and downside of integrated web search for context?

Web search can add up-to-date information and often returns sources. The transcript’s example shows a model searching online (including Reuters) for major news topics and then using that retrieved context in follow-up work. The downside is precision: source selection can be left to the model, which may pull in irrelevant material, and repeated searching can be slower than manually finding what’s needed.

How do MCP servers with Brave and Fetch add control compared with generic web search?

MCP tools let users steer the query and control extraction. The example uses Brave to find relevant URLs for a specific request (e.g., Ukraine news on a particular date) and then uses Fetch to retrieve and render HTML from those pages. The extracted content can be summarized into a local file like “Ukraine.txt,” turning a messy web lookup into a more deterministic pipeline.

What makes an MCP RAG server with a vector store the most powerful context method here?

A RAG server retrieves the most relevant documentation snippets automatically. The transcript describes a “3JS vector search” MCP server connected in Cursor, backed by a vector database of 3JS documentation text files. When asked about implementing “fog” or applying “textures,” the system queries the vector store and returns top matches—such as linear vs. exponential fog examples—so the model can answer using curated references without manually browsing documentation.

Review Questions

  1. Which context method best fits a one-time task, and which method best supports repeated use across projects?
  2. What tradeoffs come with integrated web search, and how does an MCP Brave+Fetch pipeline address them?
  3. How does a vector-store-backed MCP RAG server change the way documentation is used during development (e.g., for 3JS fog or textures)?

Key Points

  1. 1

    Context management is the main performance lever as LLMs converge on similar core abilities.

  2. 2

    Copy-paste is effective for quick, one-off tasks but doesn’t scale for reuse.

  3. 3

    Storing project documentation in local, reusable files (e.g., a “docs” folder) improves consistency and updateability.

  4. 4

    Integrated web search can add current information with sources, but it can be imprecise and repetitive.

  5. 5

    MCP server pipelines (e.g., Brave for URL discovery plus Fetch for page retrieval) provide tighter control over what context gets pulled.

  6. 6

    An MCP RAG server backed by a vector store enables targeted retrieval of relevant documentation snippets, reducing manual lookup and improving grounding.

Highlights

Copy-paste works for immediate tasks, but local documentation files are the practical upgrade for anything that must be reused.
Web search can return sources, yet precision suffers when the model chooses which outlets to use.
Brave + Fetch via MCP turns “search the web” into a controlled pipeline: query → URLs → rendered content → local summary.
A vector-store-backed MCP RAG server can answer development questions (like 3JS fog and textures) by retrieving the most relevant documentation examples automatically.

Topics

Mentioned

  • MCP
  • RAG