diff --git a/services/mcp-gateway.md b/services/mcp-gateway.md
index 8b55594..62bb411 100644
--- a/services/mcp-gateway.md
+++ b/services/mcp-gateway.md
@@ -17,6 +17,7 @@ The legacy FastAPI DinD mcp-gateway (`mcp.nuclide.systems`) is pending decommiss
 |---|---|---|
 | `claude-code` | `sk-bf-bfc19117-4c46-4d48-9b10-85d78b1ae2b3` | Claude Code + Claude.ai |
 | `mcp-dev` | `sk-bf-279d3ecc-9031-41ff-a582-ecf3dca61d52` | Testing / dev |
+| `open-webui` | `sk-bf-7e6999fc-2d86-48f9-8ac9-0ba558893d87` | Open WebUI (`LITELLM_API_KEY` in `ai/.env`) |
 
 ## Server inventory (as of 2026-05-26)