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Preview Computed Attributes in MCP

The attributes-manage preview action in MCP, showing the input a computed attribute's function receives for two products, with the live function's output beside it

Your AI assistant can now check a computed attribute before you publish it. The new preview action in attributes-manage takes 1 to 5 products and returns the exact input your function receives for each one. Nothing is saved.

Add run_function: true to see the live function's output too. It runs once the attribute's compile status is ready.

Input queries are also checked more strictly. Unknown fields are rejected with a closest-match suggestion, and draft_update follows the same rules as publish.

After a publish, Layers now recomputes only that attribute. A full rebuild runs only when it feeds search, sequences, families, merchandising rules, or variant breakout conditions.

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