diff --git a/claude-marketplace/plugins/code-quality/commands/size.md b/claude-marketplace/plugins/code-quality/commands/size.md
index cfb8ea9..5f63bb2 100644
--- a/claude-marketplace/plugins/code-quality/commands/size.md
+++ b/claude-marketplace/plugins/code-quality/commands/size.md
@@ -11,6 +11,8 @@ Run the `size-review` skill against the specified target.
 - `/code-quality:size` -- review the current branch against its base
 - `/code-quality:size PR` or `/code-quality:size #123` -- review a pull request
 - `/code-quality:size <branch-name>` -- review a specific local branch
+- `/code-quality:size <scope> --exclude <pattern>` -- review the scope while
+  treating the pattern as a CLI-supplied exclusion for size calculations
 
 ## Instructions
 
@@ -18,3 +20,9 @@ Invoke the `size-review` skill with the user's specified scope. If no scope
 is given, default to the current branch against its merge-base with the
 trunk (`origin/main` or whatever the project's trunk is). Pass any arguments
 the user provided as the scope for the review.
+
+If the invocation includes `--exclude <pattern>`, pass the pattern to the
+`size-review` skill as a CLI-supplied exclusion. CLI-supplied exclusions augment
+the bundled defaults, repo-local `.code-quality/size-review-exclude`, and
+`.gitattributes` generated-file exclusions. Quote patterns containing spaces in
+the invocation so the pattern boundary is unambiguous.
diff --git a/claude-marketplace/plugins/code-quality/skills/size-review/SKILL.md b/claude-marketplace/plugins/code-quality/skills/size-review/SKILL.md
index 758f33c..87d6ef9 100644
--- a/claude-marketplace/plugins/code-quality/skills/size-review/SKILL.md
+++ b/claude-marketplace/plugins/code-quality/skills/size-review/SKILL.md
@@ -147,7 +147,7 @@ dependencies. Exclude them from the threshold check, the seam analysis,
 and the file counts. **Report them separately** so reviewers know they
 were considered (transparency, not silent dropping).
 
-Build the exclusion glob list from up to three sources, in this order:
+Build the exclusion glob list from these sources, in this order:
 
 1. **Bundled universal defaults** — read
    `${CLAUDE_PLUGIN_ROOT}/skills/size-review/references/default-exclusions.md`.
@@ -162,6 +162,10 @@ Build the exclusion glob list from up to three sources, in this order:
 3. **`.gitattributes` `linguist-generated=true`** — if the repo marks
    files as generated via the GitHub linguist attribute, honor that.
    Optional convenience layer.
+4. **invocation-supplied `--exclude` patterns** — include every `--exclude <pattern>`
+   passed to the size-review command invocation. These augment the bundled
+   defaults, repo-local `.code-quality/size-review-exclude`, and `.gitattributes`
+   generated-file exclusions.
 
 After resolving the union of globs, partition the diff file list: