diff --git a/graph/decisions/auto-edge-creation-on-memory-store-in-mcp-server-ee85bf.md b/graph/decisions/auto-edge-creation-on-memory-store-in-mcp-server-ee85bf.md
index 9d50e820180..36e47cc4f80 100644
--- a/graph/decisions/auto-edge-creation-on-memory-store-in-mcp-server-ee85bf.md
+++ b/graph/decisions/auto-edge-creation-on-memory-store-in-mcp-server-ee85bf.md
@@ -6,7 +6,7 @@ tags: [cognitive-memory, edges, mcp, automation, architecture, mcp-server]
 importance: 0.8
 confidence: 0.8
 created: "2026-03-01T04:12:39.570452+00:00"
-updated: "2026-03-01T04:13:02.149309+00:00"
+updated: "2026-03-01T04:13:04.584719+00:00"
 relations:
   - target: ab3ffc18-1707-42ff-ad7e-bffb16f6fdef
     type: RELATED_TO
@@ -18,6 +18,11 @@ relations:
     direction: incoming
     strength: 0.7
     edge_id: d48a8a66-5b89-435c-9e8b-1f41a10b8b13
+  - target: 9ea72015-0b85-4a42-9ae1-144866f8d86f
+    type: BUILDS_ON
+    direction: outgoing
+    strength: 0.85
+    edge_id: bc703713-c85f-478c-be2c-0f0cd35f53c7
 ---
 
 # Auto-edge Creation on memory_store in MCP Server
diff --git a/graph/edges/auto-edge-creation-on-memory-s--BUILDS_ON--cognitive-memory-v30-rich-edge-bc7037.md b/graph/edges/auto-edge-creation-on-memory-s--BUILDS_ON--cognitive-memory-v30-rich-edge-bc7037.md
new file mode 100644
index 00000000000..0b19cda58c1
--- /dev/null
+++ b/graph/edges/auto-edge-creation-on-memory-s--BUILDS_ON--cognitive-memory-v30-rich-edge-bc7037.md
@@ -0,0 +1,13 @@
+---
+id: bc703713-c85f-478c-be2c-0f0cd35f53c7
+type: BUILDS_ON
+from_id: ee85bf89-93f0-48e4-b911-7ddc18a735b5
+from_title: "Auto-edge creation on memory_store in MCP server"
+to_id: 9ea72015-0b85-4a42-9ae1-144866f8d86f
+to_title: "Cognitive Memory v3.0: Rich Edges + Hybrid Embeddings + MCP Server"
+strength: 0.85
+created: "2026-03-01T04:13:04.584719+00:00"
+updated: "2026-03-01T04:13:04.584719+00:00"
+---
+
+Auto-edge creation extends the rich edges architecture established in v3.0
diff --git a/graph/solutions/cognitive-memory-v30-rich-edges-hybrid-embeddings-mcp-server-9ea720.md b/graph/solutions/cognitive-memory-v30-rich-edges-hybrid-embeddings-mcp-server-9ea720.md
index 197ee51c8b1..3a25de33cc0 100644
--- a/graph/solutions/cognitive-memory-v30-rich-edges-hybrid-embeddings-mcp-server-9ea720.md
+++ b/graph/solutions/cognitive-memory-v30-rich-edges-hybrid-embeddings-mcp-server-9ea720.md
@@ -6,7 +6,7 @@ tags: [cognitive-memory, mcp, architecture, upgrade]
 importance: 0.9
 confidence: 0.8
 created: "2026-02-19T20:10:42.128691+00:00"
-updated: "2026-03-01T04:10:46.037508+00:00"
+updated: "2026-03-01T04:13:04.584719+00:00"
 relations:
   - target: dc6b6c6f-1319-47cf-a691-dd40751ff121
     type: BUILDS_ON
@@ -43,6 +43,11 @@ relations:
     direction: incoming
     strength: 0.76
     edge_id: 454fe3a6-e243-4cc0-bb9a-f12426f8deb3
+  - target: ee85bf89-93f0-48e4-b911-7ddc18a735b5
+    type: BUILDS_ON
+    direction: incoming
+    strength: 0.85
+    edge_id: bc703713-c85f-478c-be2c-0f0cd35f53c7
 ---
 
 Major upgrade to cognitive-memory skill. Phase 1: Rich edges as first-class markdown files in graph/edges/ with bidirectional frontmatter refs (edge_id field). relate() returns edge_id string instead of bool. Cascade deletion on memory delete. CLI: edge-get, edge-search, edge-update, edge-delete. Phase 2: Hybrid embedding providers (Ollama local + OpenAI optional) with automatic fallback chain. _config.json stores provider settings (gitignored). Dimension mismatch safety triggers re-embedding on provider switch. Phase 3: MCP server (mcp_server.py) with 18 tools via JSON-RPC 2.0 stdio protocol. Registered in ~/.claude.json. Phase 4: Updated SKILL.md, SCHEMA.md, feature.json to v3.0.0. Index version bumped from 1 to 2 (adds edges section). All stdlib-only, no external dependencies.