diff --git a/nash-observe/src/lib.rs b/nash-observe/src/lib.rs
index 6377d76..3b7838e 100644
--- a/nash-observe/src/lib.rs
+++ b/nash-observe/src/lib.rs
@@ -105,6 +105,12 @@ struct Batch<'a> {
     batch_type: &'static str,
     source: &'static str,
     session_id: Option<&'a str>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    environment_kind: Option<&'a str>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    environment_id: Option<&'a str>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    environment_label: Option<&'a str>,
     shell_id: &'a str,
     parent_shell: Option<&'a str>,
     events: &'a [Event],
@@ -119,6 +125,9 @@ struct Config {
     hook_url: Option<HookUrl>,
     token: Option<String>,
     session_id: Option<String>,
+    environment_kind: Option<String>,
+    environment_id: Option<String>,
+    environment_label: Option<String>,
     spool: Option<PathBuf>,
 }
 
@@ -159,6 +168,9 @@ impl Config {
             hook_url,
             token: std::env::var("NUCLEIC_HOOK_TOKEN").ok(),
             session_id: std::env::var("NUCLEIC_SESSION_ID").ok(),
+            environment_kind: std::env::var("NUCLEIC_SHELL_ENVIRONMENT_KIND").ok(),
+            environment_id: std::env::var("NUCLEIC_SHELL_ENVIRONMENT_ID").ok(),
+            environment_label: std::env::var("NUCLEIC_SHELL_ENVIRONMENT_LABEL").ok(),
             spool,
         })
     }
@@ -609,6 +621,9 @@ fn flusher(cfg: Config, shell_id: String, parent_shell: Option<String>, rx: mpsc
             batch_type: "shell-batch",
             source: "nash",
             session_id: cfg.session_id.as_deref(),
+            environment_kind: cfg.environment_kind.as_deref(),
+            environment_id: cfg.environment_id.as_deref(),
+            environment_label: cfg.environment_label.as_deref(),
             shell_id: &shell_id,
             parent_shell: parent_shell.as_deref(),
             events: buf,
diff --git a/nash/tests/observe.rs b/nash/tests/observe.rs
index 03289de..4cc5198 100644
--- a/nash/tests/observe.rs
+++ b/nash/tests/observe.rs
@@ -129,6 +129,15 @@ impl Sink {
         }
         events
     }
+
+    fn next_batch(&self) -> serde_json::Value {
+        let (auth, batch) = self
+            .rx
+            .recv_timeout(Duration::from_secs(5))
+            .expect("shell batch");
+        assert_eq!(auth.as_deref(), Some("Bearer test-token"));
+        batch
+    }
 }
 
 impl Drop for Sink {
@@ -162,6 +171,9 @@ fn run_nash(sink: &Sink, script: &str) -> std::process::ExitStatus {
         .env("NUCLEIC_SHELL_SOCKET", sink.socket())
         .env("NUCLEIC_HOOK_TOKEN", "test-token")
         .env("NUCLEIC_SESSION_ID", "sess-1")
+        .env("NUCLEIC_SHELL_ENVIRONMENT_KIND", "agent")
+        .env("NUCLEIC_SHELL_ENVIRONMENT_ID", "agent")
+        .env("NUCLEIC_SHELL_ENVIRONMENT_LABEL", "Agent")
         .env_remove("NUCLEIC_SHELL_PARENT")
         .status()
         .unwrap()
@@ -198,6 +210,18 @@ fn exec_events_flow() {
     assert_eq!(false_ev["exitCode"], 1);
 }
 
+#[test]
+fn emitter_environment_flows_on_batch_envelope() {
+    let sink = Sink::start();
+    let status = run_nash(&sink, "true");
+    assert_eq!(status.code(), Some(0));
+
+    let batch = sink.next_batch();
+    assert_eq!(batch["environmentKind"], "agent");
+    assert_eq!(batch["environmentId"], "agent");
+    assert_eq!(batch["environmentLabel"], "Agent");
+}
+
 #[test]
 fn external_command_exit_codes() {
     let sink = Sink::start();
@@ -509,6 +533,7 @@ fn spool_fallback_when_socket_absent() {
         .env("NUCLEIC_SHELL_SOCKET", "/nonexistent/control.sock")
         .env("NUCLEIC_SHELL_SPOOL", &dir)
         .env("NUCLEIC_SESSION_ID", "sess-1")
+        .env_remove("NUCLEIC_SHELL_HOOK_URL")
         .env_remove("NUCLEIC_SHELL_PARENT")
         .status()
         .unwrap();