diff --git a/.github/plugin/marketplace.json b/.github/plugin/marketplace.json
index c913feb38..cce75347b 100644
--- a/.github/plugin/marketplace.json
+++ b/.github/plugin/marketplace.json
@@ -16,6 +16,31 @@
       "description": "Arize AX platform skills for LLM observability, evaluation, and optimization. Includes trace export, instrumentation, datasets, experiments, evaluators, AI provider integrations, annotations, prompt optimization, and deep linking to the Arize UI.",
       "version": "1.0.0"
     },
+    {
+      "name": "autoharness",
+      "description": "Agent harness framework that composes 10 irreducible AI coding assistant primitives into any repository workspace. Includes Auto-MergeInstall, Auto-Tune, install-harness, tune-harness, verify-harness, and workspace-discovery for structured agent setup and maintenance.",
+      "version": "1.3.4",
+      "author": {
+        "name": "softwaresalt",
+        "url": "https://github.com/softwaresalt"
+      },
+      "homepage": "https://github.com/softwaresalt/autoharness",
+      "keywords": [
+        "harness",
+        "agents",
+        "coding-assistant",
+        "copilot",
+        "workspace-discovery",
+        "automation"
+      ],
+      "license": "MIT",
+      "repository": "https://github.com/softwaresalt/autoharness",
+      "source": {
+        "source": "github",
+        "repo": "softwaresalt/autoharness",
+        "path": "."
+      }
+    },
     {
       "name": "automate-this",
       "source": "automate-this",