diff --git a/docs/skills/index.md b/docs/skills/index.md
index 3c66768..fa842ff 100644
--- a/docs/skills/index.md
+++ b/docs/skills/index.md
@@ -103,9 +103,9 @@ Skills for packaging, deploying, and maintaining projects.
 | [PyPI](pypi.md) | Python package publishing | build, twine |
 | [GCP](gcp.md) | Google Cloud Platform services for ML workflows | gcloud, google-cloud-storage, google-cloud-aiplatform |
 | [GitHub Actions](github-actions.md) | CI/CD pipeline configuration | GitHub Actions |
-| [GitHub Repo Setup](github-repo-setup.md) | Repository initialization and configuration | gh CLI |
+| [GitHub Repo Setup](github-repo-setup.md) _(extra)_ | Repository initialization and configuration | gh CLI |
 | [Pre-commit](pre-commit.md) | Git hook automation | pre-commit |
-| [VS Code](vscode.md) | Editor configuration for ML development | VS Code |
+| [VS Code](vscode.md) _(extra)_ | Editor configuration for ML development | VS Code |
 | [Data Pipelines](data-pipelines.md) | ETL, storage formats, leakage-free splitting, schema evolution | polars, Great Expectations |
 
 ### Process & Review
diff --git a/skills/github-repo-setup/skill.toml b/skills/github-repo-setup/skill.toml
index 33140ea..40c342b 100644
--- a/skills/github-repo-setup/skill.toml
+++ b/skills/github-repo-setup/skill.toml
@@ -2,6 +2,7 @@
 name = "github-repo-setup"
 version = "1.0.0"
 category = "infra"
+tier = "extra"
 tags = ["repository", "github", "setup", "initialization"]
 
 [dependencies]
diff --git a/skills/vscode/skill.toml b/skills/vscode/skill.toml
index 17abb8a..75ea737 100644
--- a/skills/vscode/skill.toml
+++ b/skills/vscode/skill.toml
@@ -2,6 +2,7 @@
 name = "vscode"
 version = "1.0.0"
 category = "infra"
+tier = "extra"
 tags = ["editor", "ide", "vscode", "configuration"]
 
 [dependencies]