diff --git a/.opencode/tools/tea-comment.ts b/.opencode/tools/tea-comment.ts
new file mode 100644
index 0000000..c1e697c
--- /dev/null
+++ b/.opencode/tools/tea-comment.ts
@@ -0,0 +1,14 @@
+import { tool } from "@opencode-ai/plugin"
+import { $ } from "bun"
+
+export default tool({
+  description: "Add a comment to a specific issue using tea CLI",
+  args: {
+    issueNumber: tool.schema.number().describe("Issue number/index"),
+    body: tool.schema.string().describe("Comment body"),
+  },
+  async execute(args) {
+    const result = await $`tea comment ${args.issueNumber} ${args.body}`.text()
+    return result.trim()
+  },
+})
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