What the course quotes, and whether it is still there
Every claim this course makes about a model is a quotation from the vendor’s own page, with the date it was read. A job re-reads those pages every Monday and fails when a sentence has gone. This page is that check, made visible. It is rebuilt whenever the lessons are reloaded.
Last checked 2026-09-23 03:04 UTC. TMTW quote drift PASS: 19/19 quotes found on 9 pages, 2026-09-23 03:04 UTC, KNJ-M5-MBP, manifest = workspace file
Course one
| Lesson | Quoted phrase | Page | Read | Last check |
|---|---|---|---|---|
| 2.1 | Show your prompt to a colleague with minimal context on the task | platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices | 2026-09-09 | found |
| 2.2 | Providing context or motivation behind your instructions | platform.claude.com/…/claude-prompting-best-practices | 2026-09-09 | found |
| 5.1 | Claude Opus 5 verifies its own work without being told to | platform.claude.com/…/prompting-claude-opus-5 | 2026-09-09 | found |
| 5.1 | Before reporting progress, audit each claim against a tool result from this session | platform.claude.com/…/prompting-claude-fable-5 | 2026-09-09 | found |
| 5.1 | nearly eliminated fabricated status reports even on tasks designed to elicit them | platform.claude.com/…/prompting-claude-fable-5 | 2026-09-09 | found |
| 6.1 | Projects allow you to create self-contained workspaces | support.claude.com/en/articles/9517075-what-are-projects | 2026-09-12 | found |
| 6.1 | You can upload relevant documents, text, code, or other files to a project's knowledge base | support.claude.com/en/articles/9517075-what-are-projects | 2026-09-12 | found |
| 6.2 | Skills are folders of instructions, scripts, and resources that Claude loads dynamically | support.claude.com/en/articles/12512176-what-are-skills | 2026-09-12 | found |
| 6.2 | it reviews available skills, loads relevant ones, and applies their instructions | support.claude.com/en/articles/12512176-what-are-skills | 2026-09-12 | found |
| 6.4 | The fix is to dial back any aggressive language | platform.claude.com/…/claude-prompting-best-practices | 2026-09-09 | found |
| 6.4 | treat it as measured on that model and re-check it against your own evals | platform.claude.com/…/claude-prompting-best-practices | 2026-09-09 | found |
Course two
| Lesson | Quoted phrase | Page | Read | Last check |
|---|---|---|---|---|
| 1.2 | We removed over 80% of Claude Code's system prompt for models like Claude Opus 5 and Claude Fable 5 | claude.com/blog/the-new-rules-of-context-engineering-for-claude-5-generation-models | 2026-09-23 | found |
| 1.2 | giving examples actually constrains them to a certain exploration space | claude.com/blog/the-new-rules-of-context-engineering-for-claude-5-generation-models | 2026-09-23 | found |
| 2.1 | contains hidden instructions embedded in white text, invisible to you but processed by the agent | www.anthropic.com/research/prompt-injection-defenses | 2026-09-23 | found |
| 2.1 | No browser agent is immune to prompt injection | www.anthropic.com/research/prompt-injection-defenses | 2026-09-23 | found |
| 2.2 | It makes no difference whether the information comes from a static page or a chatbot | www.bbc.com/travel/article/20240222-air-canada-chatbot-misinformation-what-travellers-should-know | 2026-09-23 | found |
| 3.1 | Place your long documents and inputs near the top of your prompt, above your query, instructions, and examples | platform.claude.com/…/claude-prompting-best-practices | 2026-09-23 | found |
| 4.2 | By default, Claude asks before taking an action | claude.com/blog/cowork-is-now-claude | 2026-09-23 | found |
| 4.2 | You keep the final say | claude.com/blog/cowork-is-now-claude | 2026-09-23 | found |
A phrase marked not found is a rewrite ticket, not a correction to the vendor: the lesson that quotes it is out of date until it is rewritten.