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natorion merged 1 commit into from
Dec 5, 2025
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docs: Add AX design principles #643

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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -7,7 +7,7 @@ control and inspect a live Chrome browser. It acts as a Model-Context-Protocol
(MCP) server, giving your AI coding assistant access to the full power of
Chrome DevTools for reliable automation, in-depth debugging, and performance analysis.

## [Tool reference](./docs/tool-reference.md) | [Changelog](./CHANGELOG.md) | [Contributing](./CONTRIBUTING.md) | [Troubleshooting](./docs/troubleshooting.md)
## [Tool reference](./docs/tool-reference.md) | [Changelog](./CHANGELOG.md) | [Contributing](./CONTRIBUTING.md) | [Troubleshooting](./docs/troubleshooting.md) | [Design Principles](./docs/design-principles.md)

## Key features

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10 changes: 10 additions & 0 deletions docs/design-principles.md
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# Design Principles

These are rough guidelines to follow when shipping features for the MCP server.
Apply them with nuance.

- **Agent-Agnostic API**: Use standards like MCP. Don't lock in to one LLM. Interoperability is key.
- **Token-Optimized**: Return semantic summaries. "LCP was 3.2s" is better than 50k lines of JSON. Files are the right location for large amounts of data.
- **Small, Deterministic Blocks**: Give agents composable tools (Click, Screenshot), not magic buttons.
- **Self-Healing Errors**: Return actionable errors that include context and potential fixes.
- **Human-Agent Collaboration**: Output must be readable by machines (structured) AND humans (summaries).