The Claude Workflow That Replaced 200 Words of Context With Two Sentences

How stacking four Claude features lets you stop re-explaining yourself at the start of every single chat — and just ask for the thing.

Here's the whole trick before the explanation. My prompts used to open with a 200-word wall: who I am, my stack, my conventions, my tone, the project background. Now they open like this:

Add rate limiting to the /api/upload route using our existing Redis setup. Match the error-handling pattern we already use elsewhere.

Two sentences. No preamble. And the output is more on-target than the 200-word version ever was — because the context didn't disappear, it moved. It now lives in four Claude features that load automatically, instead of in a paragraph I retype every time. This post shows you exactly how to set that up.

The 200-word problem

If you use Claude for real work, you know the tax. Every new chat starts cold, so you paste the same block: "I'm a full-stack engineer, we use TypeScript and Postgres, keep it concise, here's the architecture…" You're not prompting — you're re-onboarding the model from scratch, every time.

The reason this happens is structural, not a bug. Each conversation opens in a fresh context window with nothing pre-loaded from yesterday's chat. So unless something carries that context for you, you are the carrier. The fix is to make the platform hold it instead.

There are four places to put context so it loads on its own. Stack them, and the 200 words evaporate.

Layer 1 — Profile Preferences: who you are, set once

This is the global base layer. In Settings, the personal preferences field lets you tell Claude standing facts about you and how you want responses — your role, your defaults, your hard "do nots." It applies across every chat you have, automatically.

This is where "I'm a full-stack engineer" and "keep answers concise, no fluff" live permanently. Write it once; never type it again.

Layer 2 — Custom Style: how you write, locked in

Tone is the other half of most people's preamble — "make it punchy," "match my voice." Claude's Style feature handles that. You pick a built-in style or create a custom one from samples of your own writing, and Claude applies it to outputs.

So the entire "write it in a tight, no-nonsense tone" instruction collapses into a style you select once. That's another chunk of preamble gone.

Layer 3 — Projects: the context for this work

This is the heavy lifter. A Project is a self-contained workspace with its own instructions and knowledge base S1. Two parts matter:

• Project instructions — a global prompt that every chat inside the project inherits automatically, so you define behavior once instead of repeating it S1S2.
• Project knowledge — documents you upload once (specs, style guides, API docs, architecture notes) that Claude references across every chat in that project S2.

On paid plans, when your project knowledge approaches the context limit, Claude automatically switches to RAG mode to expand capacity rather than dropping content S1. One important detail to internalize: context is not shared between chats in a project unless it's in the knowledge base S2 — so durable facts belong in knowledge, not buried in one old chat.

This is where your stack, conventions, and architecture background go. That's the bulk of your 200 words, handled.

Layer 4 — Memory: what Claude learned about you

The last layer is the one that fills itself in. With memory enabled, Claude summarizes your conversations and synthesizes key facts — your role, preferences, recurring tools — into context that loads into every new standalone chat, refreshed about every 24 hours S3. You can also just tell it "remember that I…" and it updates immediately S3.

One nuance worth knowing: memory and projects are separate spaces. The cross-chat synthesis covers your standalone conversations, and each project keeps its own dedicated memory, so contexts stay isolated and relevant rather than bleeding together S3.

The developer variant: CLAUDE.md

If your "workflow" is Claude Code rather than chat, the same principle has a cleaner home. Each Claude Code session starts with a fresh context window, and a CLAUDE.md file gives Claude persistent instructions that load at the start of every session S4. Pair it with auto memory — notes Claude writes for itself based on your corrections — and the repo effectively remembers its own rules S4.

Keep it tight: the docs recommend targeting under ~200 lines per CLAUDE.md, and treating it as context rather than hard enforcement S4. Put your build commands, conventions, and "always/never" rules there, and you stop re-explaining the codebase entirely.

The two-sentence template

Once the four layers hold your context, a good prompt only needs two things:

1. The task — what you want done, specifically.
2. The constraint — the one rule or output shape that this particular ask needs.

That's it. Everything else is already loaded.

[Task]  Add rate limiting to the /api/upload route using our existing Redis setup.
[Constraint]  Match the error-handling pattern we already use elsewhere.

Notice what's not there: no "I'm an engineer," no stack description, no tone instruction, no architecture recap. Preferences cover who you are, Style covers the voice, the Project covers the stack and patterns, Memory covers your habits.

Setting it up (about 20 minutes, once)

1. Fill in Profile Preferences. Settings → personal preferences. Add your role, defaults, and 2–3 "do not" rules. Keep it to facts that are true in every chat.
2. Create or pick a Style. Generate a custom style from a few samples of your own writing so outputs match your voice by default.
3. Build a Project per context. One project per client, product, or codebase. Write the project instructions (behavior + standards) and upload your reference docs to project knowledge S1S2. Don't duplicate what's already in your preferences — let them stack.
4. Turn on Memory. Settings → Capabilities → enable memory, then seed it: tell Claude the few durable facts you want it to hold S3.
5. (Devs) Add a CLAUDE.md. Drop build commands, conventions, and rules into the repo root; keep it under ~200 lines S4. Use the # shortcut to promote a one-off instruction into it when it proves useful.

After that, every new chat starts with Claude already knowing the setup. You just ask for the thing.

Is this workflow a fit for you?

It's a fit if you:

• Start most chats by pasting the same background block
• Work on the same projects or codebases repeatedly
• Care about consistent tone and standards across outputs
• Are on a paid plan (project knowledge with RAG scaling needs one) S1

It's probably not a fit if you:

• Mostly ask one-off, unrelated questions with no shared context
• Need strict, enforced guardrails — these features are context, not hard rules, so for non-negotiable blocks a tool-level hook is the right call S4
• Handle sensitive data you can't put into project knowledge (redact first, or keep it out)

Sources

1. S1Anthropic — "What are projects?" Claude Help Center. https://support.claude.com/en/articles/9517075-what-are-projects
2. S2Anthropic — "How can I create and manage projects?" Claude Help Center. https://support.claude.com/en/articles/9519177-how-can-i-create-and-manage-projects
3. S3Anthropic — "Use Claude's chat search and memory to build on previous context." Claude Help Center. https://support.claude.com/en/articles/11817273-use-claude-s-chat-search-and-memory-to-build-on-previous-context
4. S4Anthropic — "How Claude remembers your project" (CLAUDE.md & auto memory), Claude Code Docs. https://code.claude.com/docs/en/memory

Written by

Syed Moinuddin

Full Stack Engineer writing about AI tooling, agentic systems, and shipping things that survive production. Follow along for more deep dives on the tools changing how we ship software.