diff --git a/.agents/skills/certd/agents/openai.yaml b/.agents/skills/certd/agents/openai.yaml
new file mode 100644
index 000000000..15261847c
--- /dev/null
+++ b/.agents/skills/certd/agents/openai.yaml
@@ -0,0 +1,6 @@
+interface:
+  display_name: "Certd"
+  short_description: "Repo-specific patterns and workflows for certd"
+  default_prompt: "Use the certd repo skill to follow existing architecture, testing, and workflow conventions."
+policy:
+  allow_implicit_invocation: true
\ No newline at end of file