diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index 3d53c2d..4973007 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "sourcey",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Explore sourced startup offers and Agent Readiness reports with evidence, freshness and eligibility details.",
   "author": {
     "name": "Sourcey",
diff --git a/.cursor-plugin/plugin.json b/.cursor-plugin/plugin.json
index f8e8dcb..7661e6d 100644
--- a/.cursor-plugin/plugin.json
+++ b/.cursor-plugin/plugin.json
@@ -2,7 +2,7 @@
   "name": "sourcey",
   "displayName": "Sourcey",
   "description": "Explore sourced startup offers and Agent Readiness reports with evidence, freshness and eligibility details.",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "author": {
     "name": "Sourcey",
     "email": "hello@sourcey.com"
@@ -12,5 +12,5 @@
   "license": "MIT",
   "keywords": ["sourcey", "startup credits", "offers", "agent readiness", "evidence"],
   "logo": "./assets/sourcey-mark.png",
-  "mcpServers": "mcp.json"
+  "mcpServers": ".mcp.json"
 }
diff --git a/.grok-plugin/plugin.json b/.grok-plugin/plugin.json
index f978b53..878d1cc 100644
--- a/.grok-plugin/plugin.json
+++ b/.grok-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "sourcey",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Explore sourced startup offers and Agent Readiness reports with evidence, freshness and eligibility details.",
   "author": {
     "name": "Sourcey",
diff --git a/README.md b/README.md
index 3363958..90ad244 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ data or tool-description update therefore needs no package release.
 
 ## Agent plugins
 
-This repository also packages the **hosted Sourcey connection** for Claude, Cursor and Grok Build. The plugin manifests are in `.claude-plugin/`, `.cursor-plugin/` and `.grok-plugin/`; `mcp.json` and `.mcp.json` both point directly to `https://mcp.sourcey.com/mcp`. The bundled [Sourcey research skill](skills/sourcey-research/SKILL.md) shows how to check evidence and eligibility before recommending an offer. Marketplace review and live cards are separate from the source package.
+This repository also packages the **hosted Sourcey connection** for Claude, Cursor, Grok Build and portable ChatGPT/Codex distribution. Host manifests are in `.claude-plugin/`, `.cursor-plugin/` and `.grok-plugin/`; root `plugin.json` carries Agent Plugins metadata for ChatGPT/Codex. Portable `mcp.json` and host-specific `.mcp.json` point directly to `https://mcp.sourcey.com/mcp`. The bundled [Sourcey research skill](skills/sourcey-research/SKILL.md) shows how to check evidence and eligibility before recommending an offer. Marketplace review and live cards are separate from the source package; no ChatGPT/Codex approval is claimed here.
 
 The plugin connects to Sourcey's startup-offer and Agent Readiness data. It does **not** run Sourcey's separate documentation generator or pay for Sourcey's HTTP services. The current square mark is in `assets/sourcey-mark.png`; [privacy](https://sourcey.com/privacy), [terms](https://sourcey.com/terms) and [support](https://sourcey.com/support) are available on the product site.
 
diff --git a/mcp.json b/mcp.json
index 2acd635..5380dba 100644
--- a/mcp.json
+++ b/mcp.json
@@ -1,7 +1,8 @@
 {
+  "$schema": "https://agent-plugins.org/schemas/1.0.0/mcp.schema.json",
   "mcpServers": {
     "sourcey": {
-      "type": "http",
+      "type": "streamable-http",
       "url": "https://mcp.sourcey.com/mcp"
     }
   }
diff --git a/plugin.json b/plugin.json
new file mode 100644
index 0000000..ae9e1eb
--- /dev/null
+++ b/plugin.json
@@ -0,0 +1,42 @@
+{
+  "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
+  "name": "sourcey",
+  "version": "0.1.1",
+  "description": "Explore sourced startup offers and Agent Readiness reports with evidence, freshness and eligibility details.",
+  "author": {
+    "name": "Sourcey",
+    "email": "hello@sourcey.com",
+    "url": "https://sourcey.com"
+  },
+  "repository": "https://github.com/sourcey/mcp-server",
+  "homepage": "https://sourcey.com",
+  "license": "MIT",
+  "keywords": ["sourcey", "startup credits", "offers", "agent readiness", "evidence"],
+  "extensions": {
+    "com.openai": {
+      "interface": {
+        "displayName": "Sourcey",
+        "shortDescription": "Explore sourced startup offers",
+        "longDescription": "Search Sourcey’s public startup offers and Agent Readiness records. Inspect original evidence, eligibility conditions, freshness and unknowns before relying on a result. Sourcey Docs is a separate documentation generator.",
+        "developerName": "Sourcey",
+        "category": "Productivity",
+        "capabilities": [
+          "Search startup offers",
+          "Inspect evidence and eligibility",
+          "Explore Agent Readiness"
+        ],
+        "websiteURL": "https://sourcey.com",
+        "supportURL": "https://sourcey.com/support",
+        "privacyPolicyURL": "https://sourcey.com/privacy",
+        "termsOfServiceURL": "https://sourcey.com/terms",
+        "defaultPrompt": [
+          "Find current startup offers for a small software team and show the original terms.",
+          "What eligibility conditions are known for this Sourcey offer?",
+          "Compare two Sourcey Agent Readiness records and identify what has not been verified."
+        ],
+        "composerIcon": "./assets/sourcey-mark.png",
+        "logo": "./assets/sourcey-mark.png"
+      }
+    }
+  }
+}