Claude Prompt Mastery — complete guide index across 9 posts
Series wrap-up
Honestly, nine straight days of writing about prompts felt much longer than nine days.
The “Claude Prompt Mastery” series comes to a close here.
As I wrote on day one, the playbook was hiding in the official docs. Built on those sources, the series delivered 42 patterns + 18 principles across 8 guide posts.
This final post is a directory — which post to open for which need.
The whole series
| Part | Title | Focus |
|---|---|---|
| 1 | Series kick-off | Big picture + what changed for me |
| 2 | Three core principles | Golden Rule / context / verification |
| 3 | Workflow | Explore → Plan → Code → Commit |
| 4 | 11 dev patterns | Implement, review, debug, refactor |
| 5 | 5 instruction techniques | CLAUDE.md / XML / few-shot |
| 6 | Claude Code-only features | Skills / Subagents / Hooks / Plan Mode |
| 7 | 13 thinking patterns | Research, learning, decisions |
| 8 | 18 daily-life patterns | Writing, career, emotions, daily tasks |
Reading guide by goal
”I just started using Claude — where do I begin?”
- Part 2 — three principles
- Part 3 — workflow
- Part 4 — dev patterns (paste templates from here)
That covers 90 % of daily usage.
”I’ve been using Claude but the quality is inconsistent”
- Part 5 — instruction techniques (get a
CLAUDE.mdset up) - Part 6 — Claude Code features
A proper CLAUDE.md alone lifts quality a notch.
”I want to use Claude beyond code”
Five rules distilled from the whole series
Rule 1 — Always attach a way for Claude to verify
Anthropic explicitly calls this “the single highest-leverage thing you can do.” Test, screenshot, or expected output. Always. Quality jumps on day one.
Rule 2 — Never jump straight to code
Follow Explore → Plan → Code → Commit. Plan Mode is non-negotiable for multi-file changes.
Rule 3 — Fear context pollution
Correct Claude twice on the same thing → /clear. Long sessions don’t make Claude smarter.
Rule 4 — Persist rules in CLAUDE.md
Put things you keep repeating into CLAUDE.md. Aim for ~150 lines.
Rule 5 — Write as if Claude is an intern on day one
Claude is brilliant but doesn’t know your team’s conventions. “Would a context-less colleague follow this?” is the right litmus test before hitting send.
What changed for me (personal)
Development
- Personal-project velocity roughly 5× higher
- Test coverage rose naturally (Claude writes them)
- I can now pick up unfamiliar frameworks and ship on day one
- Self-review culture survives even as a solo developer
Thinking
- Making Claude argue against me surfaces blind spots
- Decision frameworks became reflex, ad-hoc calls diminished
- Journal-style reflection finally stuck
Life
- Less time bottling up worries alone
- I can evaluate life choices across multiple axes now
- Fewer “I don’t know why I picked this” decisions
The Claude Code subscription isn’t cheap, but against this, it pays for itself many times over.
What’s next
This series is a snapshot of where I am today. Anthropic updates the docs. Claude Code ships frequently. “Complete guide” is the title, not the end. Anything new worth sharing will appear in future posts.
Primary sources
- Best Practices for Claude Code — Anthropic official
- Prompting best practices for Claude 4 — Anthropic official
Reference-grade version on Qiita
The homepage version prioritizes personal takeaways and readability. The reference-grade series, with full official quotations, is on Qiita.
If a single pattern from this series ends up living in your workflow next month, that — for me — is the whole point.
Thank you for reading.