claude
Claude Tag in Slack: 3 Prompt Patterns That Ship + 2 Failure Modes (June 2026)
Three production prompt patterns for Anthropic's Claude Tag in Slack channels, plus two failure modes that bite in week one. June 2026.
5 min read97
Author
Roo Iyer
Roo Iyer writes tested, no-preamble prompt and API recipes for PromptAttic. Every recipe ships with a receipt and a cost to test.
Recipes
Claude Prompt Caching: 3 Recipes That Pay Off, 2 That Lose Money (June 2026)
Three Claude prompt-caching recipes with real cost math for Sonnet 4.6, Opus 4.7, and Haiku 4.5. Plus two patterns where caching quietly costs you 25% more than not using it.
6 min read94
Multi-step
Multi-step JSON repair: make any model return valid JSON on the second try
Step one: ask for JSON. Step two: if JSON.parse throws, send the broken string plus the parser error back and ask only for a corrected version. Don't re-explain the task. Models fix syntax far more reliably than they self-correct semantics. Two steps, near-zero unparseable output.
1 min read103