Agentic Coding with Claude Code: Best Practices and Advanced Techniques

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Full article here: Anthropic’s Engineering Blog – Claude Code Best Practices

You Should Know:

1. Contextual Intelligence via CLAUDE_md

Claude automatically reads structured knowledge (bash commands, testing norms, repo etiquette) at runtime.

Example Commands:

 Initialize Claude with a custom knowledge file 
claude --context CLAUDE_md.md

View available context rules 
claude --list-context
  1. Composable Tooling with GitHub CLI & REST APIs

Extend Claude’s capabilities with external tools.

Example Workflow:

 Integrate GitHub CLI for PR automation 
gh pr create --title "Claude-generated fix" --body "Automated by Claude Code"

Trigger REST API calls via Claude 
curl -X POST https://api.example.com/deploy \ 
-H "Authorization: Bearer $TOKEN" \ 
-d '{"commit": "$(git rev-parse HEAD)"}'

3. Test-Driven Development (TDD) Automation

Claude generates tests before implementation.

Example Python Unit Test:

 Generated by Claude 
def test_addition(): 
assert 2 + 2 == 4, "Math sanity check failed"

Run tests 
pytest test_suite.py -v

4. Multi-Agent DevOps with Git Worktrees

Parallelize workflows using multiple Claude instances.

Bash Setup:

git worktree add ../feature-branch 
cd ../feature-branch && claude --task "Implement OAuth2 flow"

5. Headless Automation in CI/CD

Run Claude in pipelines for issue triage.

GitHub Actions Snippet:

- name: Run Claude Linter 
run: | 
claude -p "Review code for stale comments" >> lint_results.md

6. Subagent Loops & Thinking Budgets

Increase reasoning depth with `ultrathink` mode.

Claude Command:

claude --think-mode ultrathink "Optimize SQL query for 1M rows"

7. Visual Regression with Puppeteer

Claude matches UI mocks via screenshots.

Node.js Automation:

const puppeteer = require('puppeteer'); 
(async () => { 
const browser = await puppeteer.launch(); 
const page = await browser.newPage(); 
await page.goto('https://example.com'); 
await page.screenshot({ path: 'claude_ui_check.png' }); 
await browser.close(); 
})();

What Undercode Say:

Claude Code revolutionizes AI-assisted development by integrating:

  • Bash scripting (claude --task "Deploy Kubernetes pod")
  • Git automation (git worktree + parallel agents)
  • CI/CD optimization (claude -p in pipelines)
  • Visual testing (Puppeteer/simulator hooks)

For AI-driven DevOps, mastering these commands ensures seamless human-AI collaboration.

Prediction:

Future AI coding tools will merge real-time debugging, auto-refactoring, and self-healing CI/CD—reducing manual review by 70%.

Expected Output:

A fully automated, Claude-assisted DevOps pipeline with:

✔ Auto-generated tests

✔ Parallel agent workflows

✔ Visual regression checks

✔ GitHub PR automation

Reference: Anthropic Claude Code Docs

IT/Security Reporter URL:

Reported By: Greg Coquillo – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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