diff --git a/.codex-plugin/plugin.json b/.codex-plugin/plugin.json
index 952af87..dfe6133 100644
--- a/.codex-plugin/plugin.json
+++ b/.codex-plugin/plugin.json
@@ -1,5 +1,6 @@
 {
   "name": "plugin-stack",
+  "version": "1.0.0",
   "description": "Skills for AI plugin builders: optimize listings, submit to stores, audit discoverability, design widgets and watch competitors, on live data from OpenApps",
   "author": {
     "name": "The Open Apps, Inc.",
@@ -8,5 +9,12 @@
   "homepage": "https://theopenapps.com?ref=plugin-stack",
   "repository": "https://github.com/theopenapps/plugin-stack",
   "license": "MIT",
-  "skills": "./skills/"
+  "skills": "./skills/",
+  "interface": {
+    "displayName": "Plugin Stack",
+    "shortDescription": "Optimize listings, submit to stores, audit discoverability, design widgets and watch competitors",
+    "developerName": "The Open Apps, Inc.",
+    "websiteURL": "https://theopenapps.com?ref=plugin-stack",
+    "composerIcon": "./assets/icon.svg"
+  }
 }
diff --git a/assets/icon.svg b/assets/icon.svg
new file mode 100644
index 0000000..1510831
--- /dev/null
+++ b/assets/icon.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1024 1024"><path fill="#0d0f12" d="M230.4 0L793.6 0C920.85 0 1024 103.15 1024 230.4L1024 793.6C1024 920.85 920.85 1024 793.6 1024L230.4 1024C103.15 1024 0 920.85 0 793.6L0 230.4C0 103.15 103.15 0 230.4 0Z"/><path fill="#ffffff" d="M538.26 512C538.26 618.39 449.86 704.63 340.81 704.63C231.76 704.63 143.36 618.39 143.36 512C143.36 405.61 231.76 319.37 340.81 319.37C449.86 319.37 538.26 405.61 538.26 512ZM439.53 512C439.53 454.82 395.33 408.46 340.81 408.46C286.28 408.46 242.08 454.82 242.08 512C242.08 569.18 286.28 615.54 340.81 615.54C395.33 615.54 439.53 569.18 439.53 512Z"/><path fill="#ffffff" d="M464.55 704.63L464.56 704.63C529.82 664.34 573.17 593.13 573.17 512C573.17 491.5 570.4 471.63 565.21 452.74L618.51 319.37L726.69 319.37L880.64 704.63L774.33 704.63L748.73 640.58L596.46 640.58L570.87 704.63ZM718.9 565.94L672.6 450.06L626.29 565.94Z"/></svg>
\ No newline at end of file
diff --git a/scripts/check-skills.mjs b/scripts/check-skills.mjs
index bba6aea..85eec88 100644
--- a/scripts/check-skills.mjs
+++ b/scripts/check-skills.mjs
@@ -79,9 +79,9 @@ for (const skill of skills) {
 if (licenses.size > 1) fail("LICENSE.txt", `differs across skills: ${[...licenses.values()].map((s) => s.join(", ")).join(" | ")}`);
 
 // Claude Code holds back an update until the version changes. With no version, every commit on main is an update.
-for (const manifest of [".claude-plugin/plugin.json", ".codex-plugin/plugin.json"]) {
-  if ("version" in JSON.parse(readFileSync(manifest, "utf8"))) fail(manifest, "has a version");
-}
+if ("version" in JSON.parse(readFileSync(".claude-plugin/plugin.json", "utf8"))) fail(".claude-plugin/plugin.json", "has a version");
+// Codex updates whatever the version says, and the HOL list requires one, so its manifest keeps a fixed one.
+if (JSON.parse(readFileSync(".codex-plugin/plugin.json", "utf8")).version !== "1.0.0") fail(".codex-plugin/plugin.json", "version is not 1.0.0");
 
 if (errors.length) {
   console.error(errors.join("\n"));