diff --git a/src/qoder/runtime/custom-spawn.ts b/src/qoder/runtime/custom-spawn.ts
index 0d26ccc..74f053a 100644
--- a/src/qoder/runtime/custom-spawn.ts
+++ b/src/qoder/runtime/custom-spawn.ts
@@ -15,6 +15,15 @@ import {
  */
 const CUSTOM_PROVIDER_CLI_ENV = { QODER_SDK_CUSTOM_BASE_URL_BYOK: '1' } as const;
 
+/**
+ * Identifies this host integration to the CLI, which reports it as the
+ * `integration_id` telemetry attribute. Only a UUIDv4 is accepted; any other
+ * value is silently dropped.
+ */
+const INTEGRATION_CLI_ENV = {
+  QODER_INTEGRATION_ID: '70457212-a449-4ae3-af1e-5fb9e00fafcf',
+} as const;
+
 /**
  * Spawn qodercli in Obsidian's Electron process.
  *
@@ -43,7 +52,7 @@ export function createCustomSpawnFunction(
     const resolvedSpawnSpec = resolveWindowsCmdShimSpawnSpec({ args, command });
     const child = spawn(resolvedSpawnSpec.command, resolvedSpawnSpec.args, {
       cwd,
-      env: env ? { ...env, ...CUSTOM_PROVIDER_CLI_ENV } : env,
+      env: env ? { ...env, ...CUSTOM_PROVIDER_CLI_ENV, ...INTEGRATION_CLI_ENV } : env,
       // stderr is always piped so host code (e.g. the runtime probe) can read
       // CLI diagnostics such as "No qodercli login found". A drain listener is
       // attached below to avoid pipe backpressure when nobody else listens.
diff --git a/tests/unit/qoder/runtime/custom-spawn.test.ts b/tests/unit/qoder/runtime/custom-spawn.test.ts
index 318f0e7..f743b1c 100644
--- a/tests/unit/qoder/runtime/custom-spawn.test.ts
+++ b/tests/unit/qoder/runtime/custom-spawn.test.ts
@@ -125,6 +125,7 @@ describe('createCustomSpawnFunction', () => {
     expect(spawnOptions.env).toEqual({
       PATH: '/usr/bin',
       QODER_SDK_CUSTOM_BASE_URL_BYOK: '1',
+      QODER_INTEGRATION_ID: '70457212-a449-4ae3-af1e-5fb9e00fafcf',
     });
   });