Module 6: Claude Code Configuration and Workflows

Lesson 4: Workflow Scoping and Boundaries

The most dangerous thing an agent can do is "Scope Creep." You ask Claude to fix a button, and it starts refactoring your entire database connection because it "saw a better way." In a large codebase, this is a recipe for broken builds and security risks.

In this lesson, we learn how to "Draw a Box" around Claude so it stays focused and safe.

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1. The .claudeignore File

Just like .gitignore, the .claudeignore file tells Claude Code which files it is forbidden to see or touch.

Critical things to ignore:

• Secrets: .env, keys.json.
• Large Blobs: node_modules, dist, build.
• Sensitive Infrastructure: /scripts/deploy-production.sh.

Architect's Rule: If Claude can't see it, it can't leak it or break it. Every repo must have a .claudeignore.

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2. Command-Line Scoping

You can restrict Claude's vision at the moment of invocation.

• claude "Fix the button" --path src/components/button.tsx
• By providing the --path flag, you tell Claude: "Stay in this file. Do not look at the rest of the project."

This significantly increases speed and reduces cost because the agent doesn't waste tokens scanning the whole directory.

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3. Permission Structures

Claude Code requires Manual Approval for "Risk-Heavy" actions.

• Running a command? Approval requested.
• Writing to a file? Approval requested.

The "Auto-Run" Flag (Safe to Use?)

As an Architect, you might be tempted to use flags like -y or -nopropt. Use these with extreme caution. In a "Foundation-level" context, we always recommend Human-in-the-Loop for terminal execution.

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4. Visualizing the Scoping Layers

graph TD
    A[Claude Model] --> B{Permission Layer}
    B -->|Blocked| C[.claudeignore]
    B -->|Restricted| D[CLI Path Flags]
    B -->|Verified| E[Human Approval]
    E --> F[Repository Change]

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5. Summary of Module 6

You have mastered the governance of Claude Code.

• You understand the Local-Cloud Architecture (Module 6, Lesson 1).
• You used the Configuration Hierarchy to standardize behavior (Module 6, Lesson 2).
• You anchored the agent using CLAUDE.md (Module 6, Lesson 3).
• You "Drew the Box" using Scoping and Boundaries (Module 6, Lesson 4).

In Module 7, we move into the "Mind" of the architect: Prompt Engineering for Architecture.

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Interactive Quiz

1. What is the purpose of .claudeignore?
2. How does using the --path flag reduce token cost?
3. Why is "Automatic Command Approval" considered a risk in enterprise environments?
4. Setup a .claudeignore for a project that has a /temp folder, an .env file, and a /node_modules directory.

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Reference Video: