diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index ea9a16c..ef3b957 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -1,10 +1,11 @@
 {
-  "$schema": "https://anthropic.com/claude-code/marketplace.schema.json",
   "name": "nelson-marketplace",
-  "description": "Royal Navy agent coordination framework for Claude Code",
   "owner": {
     "name": "Harry Munro"
   },
+  "metadata": {
+    "description": "Royal Navy agent coordination framework for Claude Code"
+  },
   "plugins": [
     {
       "name": "nelson",
diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index b1cbf5f..84b5ed3 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -5,7 +5,5 @@
   "author": { "name": "Harry Munro" },
   "repository": "https://github.com/harrymunro/nelson",
   "license": "MIT",
-  "keywords": ["agents", "coordination", "teams", "workflow"],
-  "skills": "./skills/",
-  "agents": "./agents/"
+  "keywords": ["agents", "coordination", "teams", "workflow"]
 }
diff --git a/README.md b/README.md
index b934be3..5998604 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ Or add the marketplace first, then install by name:
 
 ```
 /plugin marketplace add harrymunro/nelson
-/plugin install nelson
+/plugin install nelson@nelson-marketplace
 ```
 
 ### Prompt-based
@@ -245,10 +245,12 @@ skills/nelson/
     ├── admiralty-templates/                  # Individual template files
     │   ├── battle-plan.md
     │   ├── captains-log.md
+    │   ├── crew-briefing.md
     │   ├── quarterdeck-report.md
     │   ├── red-cell-review.md
     │   ├── sailing-orders.md
     │   └── ship-manifest.md
+    ├── commendations.md                       # Recognition signals and correction guidance
     ├── crew-roles.md                         # Crew role definitions, ship names, sizing
     ├── damage-control.md                     # Error recovery routing index
     ├── damage-control/                       # Individual procedure files
@@ -273,7 +275,7 @@ skills/nelson/
         ├── split-keel.md
         └── unclassified-engagement.md
 agents/
-└── openai.yaml                              # OpenAI agent interface definition
+└── nelson.md                                # Subagent definition
 ```
 
 - `plugin.json` declares the plugin name, version, and component paths for Claude Code's plugin system.
diff --git a/agents/nelson.md b/agents/nelson.md
new file mode 100644
index 0000000..0596569
--- /dev/null
+++ b/agents/nelson.md
@@ -0,0 +1,8 @@
+---
+name: nelson
+description: England expects every agent to do its duty
+---
+
+# Nelson
+
+Use $nelson to run a Royal Navy agent mission with sailing orders, action stations, and a captain's log.
diff --git a/agents/openai.yaml b/agents/openai.yaml
deleted file mode 100644
index 553c7da..0000000
--- a/agents/openai.yaml
+++ /dev/null
@@ -1,4 +0,0 @@
-interface:
-  display_name: "Nelson"
-  short_description: "England expects every agent to do its duty"
-  default_prompt: "Use $nelson to run a Royal Navy agent mission with sailing orders, action stations, and a captain's log."