diff --git a/src/notify.ts b/src/notify.ts
index fb8b9f1..6381679 100644
--- a/src/notify.ts
+++ b/src/notify.ts
@@ -2,8 +2,8 @@ import { writeFileSync } from "fs"
 
 /**
  * Send a Warp notification via OSC 777 escape sequence.
- * Only emits when Warp declares cli-agent protocol support,
- * avoiding garbled output in other terminals (and working over SSH).
+ * Only emits when Warp declares cli-agent protocol support and the current
+ * terminal does not explicitly identify itself as another terminal.
  *
  * On Unix we write to /dev/tty so the sequence bypasses any
  * stdout redirection or terminal-multiplexer capture.
@@ -13,6 +13,7 @@ import { writeFileSync } from "fs"
  */
 function warpNotify(title: string, body: string): void {
   if (!process.env.WARP_CLI_AGENT_PROTOCOL_VERSION) return
+  if (process.env.TERM_PROGRAM && process.env.TERM_PROGRAM !== "WarpTerminal") return
 
   const sequence = `\x1b]777;notify;${title};${body}\x07`
 
diff --git a/tests/notify.test.ts b/tests/notify.test.ts
index 5f54001..5cb0514 100644
--- a/tests/notify.test.ts
+++ b/tests/notify.test.ts
@@ -12,6 +12,7 @@ const { warpNotify } = await import("../src/notify")
 
 describe("warpNotify", () => {
   const originalVersion = process.env.WARP_CLI_AGENT_PROTOCOL_VERSION
+  const originalTermProgram = process.env.TERM_PROGRAM
 
   afterEach(() => {
     writeSpy.mockClear()
@@ -20,6 +21,11 @@ describe("warpNotify", () => {
     } else {
       process.env.WARP_CLI_AGENT_PROTOCOL_VERSION = originalVersion
     }
+    if (originalTermProgram === undefined) {
+      delete process.env.TERM_PROGRAM
+    } else {
+      process.env.TERM_PROGRAM = originalTermProgram
+    }
   })
 
   it("skips when WARP_CLI_AGENT_PROTOCOL_VERSION is not set", () => {
@@ -30,6 +36,7 @@ describe("warpNotify", () => {
 
   it("writes OSC 777 sequence when Warp declares protocol support", () => {
     process.env.WARP_CLI_AGENT_PROTOCOL_VERSION = "1"
+    delete process.env.TERM_PROGRAM
     warpNotify("warp://cli-agent", '{"event":"stop"}')
     expect(writeSpy).toHaveBeenCalledTimes(1)
 
@@ -40,4 +47,18 @@ describe("warpNotify", () => {
     expect(data).toMatch(/^\x1b\]777;notify;/)
     expect(data).toMatch(/\x07$/)
   })
+
+  it("writes OSC 777 sequence inside Warp", () => {
+    process.env.WARP_CLI_AGENT_PROTOCOL_VERSION = "1"
+    process.env.TERM_PROGRAM = "WarpTerminal"
+    warpNotify("warp://cli-agent", '{"event":"stop"}')
+    expect(writeSpy).toHaveBeenCalledTimes(1)
+  })
+
+  it("skips when Warp variables were inherited by another terminal", () => {
+    process.env.WARP_CLI_AGENT_PROTOCOL_VERSION = "1"
+    process.env.TERM_PROGRAM = "zed"
+    warpNotify("warp://cli-agent", '{"event":"stop"}')
+    expect(writeSpy).not.toHaveBeenCalled()
+  })
 })