diff --git a/plugin-catalog/hermes-t3-control.yaml b/plugin-catalog/hermes-t3-control.yaml
new file mode 100644
index 0000000000..ae945898be
--- /dev/null
+++ b/plugin-catalog/hermes-t3-control.yaml
@@ -0,0 +1,32 @@
+name: hermes-t3-control
+repo: https://github.com/thetasigmaio/hermes-t3-control
+sha: aeb5493e30e744b414cbfe88a70adb1acd59a1c8 # v1.5.0
+description: Bounded tools to list, read, create, and control local T3 coding threads on Linux and WSL2.
+maintainer: thetasigmaio
+tier: community
+category: tools
+requires_hermes: ">=0.20.4"
+docs_url: https://github.com/thetasigmaio/hermes-t3-control/blob/aeb5493e30e744b414cbfe88a70adb1acd59a1c8/docs/compatibility.md
+platforms: [linux]
+# Stock Hermes: t3_thread_send requires completion_policy: "none".
+# Automatic completion callbacks are experimental, disabled by default, and
+# require separately patched host APIs; this entry does not install that patch.
+capabilities:
+  provides_tools:
+    - t3_threads
+    - t3_thread_read
+    - t3_thread_create
+    - t3_thread_send
+    - t3_thread_set_mode
+    - t3_thread_implement_plan
+    - t3_turn_interrupt
+    - t3_session_stop
+    - t3_thread_wait
+    - t3_thread_respond
+    - t3_thread_settle
+  provides_hooks: []
+  provides_middleware: []
+  # Local CLI authentication requires no environment credential. External-token
+  # mode optionally uses the profile secret T3_ORCHESTRATION_TOKEN. The optional
+  # operator Desktop readiness probe uses HERMES_DASHBOARD_SESSION_TOKEN.
+  requires_env: []