diff --git a/ci/build.py b/ci/build.py
index 91c41b4..e6e5d9c 100644
--- a/ci/build.py
+++ b/ci/build.py
@@ -53,6 +53,10 @@ run(f"'{attic}' login ci {ATTIC_SERVER} '{ATTIC_TOKEN}'")
 
 # Packages per arch
 packages = ["hello-world", "geesefs", "xonsh"]
+# woodpecker-peek: tray app, x86_64 + aarch64 only (the upstream flake's
+# default builds for Linux/Darwin; we cache the Linux native arches).
+if ARCH in ("x86_64-linux", "aarch64-linux"):
+    packages += ["woodpecker-peek"]
 # google-antigravity{,-no-fhs} skipped in CI: pulls in google-chrome, which
 # transitively builds liberation-fonts; fontforge segfaults while generating
 # the .ttf files (pipeline #40). Package definitions stay in the flake for
diff --git a/flake.lock b/flake.lock
index 8d96a6e..043ee06 100644
--- a/flake.lock
+++ b/flake.lock
@@ -191,7 +191,8 @@
           "fleet-pins",
           "nixpkgs-projects"
         ],
-        "stalewood": "stalewood"
+        "stalewood": "stalewood",
+        "woodpecker-peek": "woodpecker-peek"
       }
     },
     "stalewood": {
@@ -258,6 +259,27 @@
         "repo": "default",
         "type": "github"
       }
+    },
+    "woodpecker-peek": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1779635650,
+        "narHash": "sha256-teMrDHA/Q/KZugO8lSG96+r9+L9rNjb2MDXprFhL6Hc=",
+        "ref": "main",
+        "rev": "804f2bf8c8990ce4e13548a4b3a917661f32d8bc",
+        "revCount": 3,
+        "type": "git",
+        "url": "https://git.oleks.space/oleks/woodpecker-peek"
+      },
+      "original": {
+        "ref": "main",
+        "type": "git",
+        "url": "https://git.oleks.space/oleks/woodpecker-peek"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 2d85a9f..76deaea 100644
--- a/flake.nix
+++ b/flake.nix
@@ -33,6 +33,13 @@
       url = "github:retif/stalewood";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+
+    # woodpecker-peek — tray app for Woodpecker CI (on git.oleks.space).
+    # Re-exposed so flake-hub CI warms attic and emmett pulls cached.
+    woodpecker-peek = {
+      url = "git+https://git.oleks.space/oleks/woodpecker-peek?ref=main";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
@@ -45,6 +52,7 @@
       antigravity-nix,
       nix-deps,
       stalewood,
+      woodpecker-peek,
       ...
     }:
     let
@@ -115,6 +123,10 @@
           # stalewood — re-exposed from its own flake. No s390x output,
           # so it rides the same native-only gate.
           stalewood = stalewood.packages.${sys}.default;
+          # woodpecker-peek — same pattern; consumers (emmett) read the
+          # attic-cached binary via flake-hub's overlay, then set
+          # services.woodpecker-peek.package = pkgs.woodpecker-peek;.
+          woodpecker-peek = woodpecker-peek.packages.${sys}.default;
         };
 
       # Overlay providing Hyprspace. Requires `pkgs.hyprland` to be present