Tools and protocols
Learn how coding tools find project instructions and when an external connection is worth its permissions and failure modes.
Learning
How coding agents find your design rules
For a founder who saved design.md and expected the tool to follow it. Codex, Claude, and Gemini each read a different file, and none of them open design.md on their own.
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Use MCP when the connection earns its permissions
MCP lets a coding tool reach something outside the project, such as a browser. It is not permission to publish, pay, or read private files.
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Agent skills vs MCP
Separate reusable operating instructions from the protocol that exposes tools and context.
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Impeccable for AI design review
See how a review toolkit can make an agent's design checks more specific.
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AI web design tools compared
Compare tool roles and limits using their documented behaviour rather than one shared agent label.
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Responsive design review with Codex
Use code and a rendered browser view together when checking a responsive page.
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