Software Architecture
Summary
Trevin Chow outlines 10 principles for agent-native CLIs, focusing on non-interactive defaults and consistent JSON output to prevent agent breakage. Drawing from Cloudflare and HeyGen, he emphasizes consistency to reduce token costs and retries.
Highlights
- CLIs must run non-interactively by default, using flags like --force to avoid hanging on prompts.
- Uniform JSON output to stdout and errors to stderr ensures reliable agent parsing.
- Idempotent mutations with --dry-run and bounded pagination prevent unexpected side effects.
- Consistent naming and output formats reduce complexity for both agents and maintainers.
- Design shifts from defensive rules to compounding benefits as agents use the CLI more.
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Context
Audience
Software Engineers
DomainSoftware Development
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Topics
Related
Cloudflare WranglerHeyGenMCP ServerOpenAPICLI Design PatternsAgent-Native Development