Writing
- Use your Claude or ChatGPT plan for coding agents: which tools are allowed, what they do and what they costAnthropic and OpenAI now take opposite positions on third-party tools that run on a subscription. Here is what each vendor's terms allow, about 40 orchestrators, mobile apps, cloud runners and editors compared on how they connect to your plan, and when a subscription beats paying per token.2026-10-14
- How to write instructions for AI agents: what's tested and what's vibesDo AGENTS.md, CLAUDE.md and system prompts actually help? We read the studies, benchmarks and lab guides on length, specificity, emphasis, structure and conflicts, and labelled every rule by its evidence: tested, lab guidance, vendor eval or vibes.2026-10-09
