diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
new file mode 100644
index 0000000..1363491
--- /dev/null
+++ b/.claude-plugin/marketplace.json
@@ -0,0 +1,48 @@
+{
+  "name": "cc-os",
+  "owner": {
+    "name": "Jared Swanson"
+  },
+  "plugins": [
+    {
+      "name": "os-adr",
+      "source": "./plugins/os-adr",
+      "description": "Architecture Decision Records, consistently in every project: one template, docs/adr/NNNN-title.md + mechanical index, deterministic SessionStart existence check, non-destructive migration, and deterministic-first retrieval."
+    },
+    {
+      "name": "os-backlog",
+      "source": "./plugins/os-backlog",
+      "description": "Uniform Planka backlog boards across projects: idempotent board-ensure (lists, labels, archive convention, Planka 2.1.1 quirk handling) and a deterministic repo-to-board routing resolver."
+    },
+    {
+      "name": "os-context",
+      "source": "./plugins/os-context",
+      "description": "Prompt-composer SessionStart plugin: concatenates prompts/session-start/*.md (currently session-orchestration rules — delegation threshold, explicit model routing on Agent spawns) into one additionalContext block, injected at session start and after compaction."
+    },
+    {
+      "name": "os-doc-hygiene",
+      "source": "./plugins/os-doc-hygiene",
+      "description": "Monitor and manage stale and bloated project documentation. Deterministic SessionStart reminder + AI-assisted check/clean skills with git-safe, scoped cleanup."
+    },
+    {
+      "name": "os-sdlc",
+      "source": "./plugins/os-sdlc",
+      "description": "Harness-driven software development lifecycle for cc-os: grill/wayfinder/to-spec/to-tickets/implement/review, adapted from Matt Pocock's skill lifecycle and Delta Refinery's multi-level pipeline, wired into os-backlog and os-adr."
+    },
+    {
+      "name": "os-shortcuts",
+      "source": "./plugins/os-shortcuts",
+      "description": "User-invoked QOL shortcut commands for the cc-os plugin family — the 'keybindings' of cc-os, ritual multi-step sequences invoked on demand (not automatic hook injection). Starts with /os-shortcuts:wrap (session-close ritual); expect more shortcuts to accumulate here."
+    },
+    {
+      "name": "os-status",
+      "source": "./plugins/os-status",
+      "description": "Aggregated deterministic SessionStart status checks for the cc-os plugin family: per-project artifacts (ADR system, vault hub note) and environment hazards (subagent model env override). At most one banner per session; snooze/suppress state in .cc-os/."
+    },
+    {
+      "name": "os-vault",
+      "source": "./plugins/os-vault",
+      "description": "Vault and graph memory system for Claude Code — integrates SecondBrain knowledge graph, episodic journal, and convention summaries into every session"
+    }
+  ]
+}