diff --git a/agent/agent.go b/agent/agent.go
index 8d3766dae89ad..018b4e0ac29d0 100644
--- a/agent/agent.go
+++ b/agent/agent.go
@@ -1166,7 +1166,7 @@ func (a *agent) handleManifest(manifestOK *checkpoint) func(ctx context.Context,
 			)
 			if a.devcontainers {
 				a.containerAPI.Init(
-					agentcontainers.WithManifestInfo(manifest.OwnerName, manifest.WorkspaceName),
+					agentcontainers.WithManifestInfo(manifest.OwnerName, manifest.WorkspaceName, manifest.AgentName),
 					agentcontainers.WithDevcontainers(manifest.Devcontainers, scripts),
 					agentcontainers.WithSubAgentClient(agentcontainers.NewSubAgentClientFromAPI(a.logger, aAPI)),
 				)
diff --git a/agent/agentcontainers/api.go b/agent/agentcontainers/api.go
index fba5babce5003..d2b90216d2436 100644
--- a/agent/agentcontainers/api.go
+++ b/agent/agentcontainers/api.go
@@ -71,6 +71,7 @@ type API struct {
 
 	ownerName     string
 	workspaceName string
+	parentAgent   string
 
 	mu                       sync.RWMutex
 	closed                   bool
@@ -188,10 +189,11 @@ func WithSubAgentEnv(env ...string) Option {
 
 // WithManifestInfo sets the owner name, and workspace name
 // for the sub-agent.
-func WithManifestInfo(owner, workspace string) Option {
+func WithManifestInfo(owner, workspace, parentAgent string) Option {
 	return func(api *API) {
 		api.ownerName = owner
 		api.workspaceName = workspace
+		api.parentAgent = parentAgent
 	}
 }
 
@@ -1319,7 +1321,9 @@ func (api *API) maybeInjectSubAgentIntoContainerLocked(ctx context.Context, dc c
 						fmt.Sprintf("CODER_WORKSPACE_AGENT_NAME=%s", subAgentConfig.Name),
 						fmt.Sprintf("CODER_WORKSPACE_OWNER_NAME=%s", api.ownerName),
 						fmt.Sprintf("CODER_WORKSPACE_NAME=%s", api.workspaceName),
+						fmt.Sprintf("CODER_WORKSPACE_PARENT_AGENT_NAME=%s", api.parentAgent),
 						fmt.Sprintf("CODER_URL=%s", api.subAgentURL),
+						fmt.Sprintf("CONTAINER_ID=%s", container.ID),
 					}...),
 				)
 			}
diff --git a/agent/agentcontainers/api_test.go b/agent/agentcontainers/api_test.go
index f61f4c24bfc2b..1d2099b15a31c 100644
--- a/agent/agentcontainers/api_test.go
+++ b/agent/agentcontainers/api_test.go
@@ -1393,7 +1393,7 @@ func TestAPI(t *testing.T) {
 			agentcontainers.WithSubAgentClient(fakeSAC),
 			agentcontainers.WithSubAgentURL("test-subagent-url"),
 			agentcontainers.WithDevcontainerCLI(fakeDCCLI),
-			agentcontainers.WithManifestInfo("test-user", "test-workspace"),
+			agentcontainers.WithManifestInfo("test-user", "test-workspace", "test-parent-agent"),
 		)
 		api.Init()
 		apiClose := func() {
@@ -1415,7 +1415,9 @@ func TestAPI(t *testing.T) {
 			assert.Contains(t, envs, "CODER_WORKSPACE_AGENT_NAME=coder")
 			assert.Contains(t, envs, "CODER_WORKSPACE_NAME=test-workspace")
 			assert.Contains(t, envs, "CODER_WORKSPACE_OWNER_NAME=test-user")
+			assert.Contains(t, envs, "CODER_WORKSPACE_PARENT_AGENT_NAME=test-parent-agent")
 			assert.Contains(t, envs, "CODER_URL=test-subagent-url")
+			assert.Contains(t, envs, "CONTAINER_ID=test-container-id")
 			return nil
 		})
 
@@ -1557,7 +1559,9 @@ func TestAPI(t *testing.T) {
 			assert.Contains(t, envs, "CODER_WORKSPACE_AGENT_NAME=coder")
 			assert.Contains(t, envs, "CODER_WORKSPACE_NAME=test-workspace")
 			assert.Contains(t, envs, "CODER_WORKSPACE_OWNER_NAME=test-user")
+			assert.Contains(t, envs, "CODER_WORKSPACE_PARENT_AGENT_NAME=test-parent-agent")
 			assert.Contains(t, envs, "CODER_URL=test-subagent-url")
+			assert.NotContains(t, envs, "CONTAINER_ID=test-container-id")
 			return nil
 		})
 
@@ -2134,7 +2138,7 @@ func TestAPI(t *testing.T) {
 			agentcontainers.WithSubAgentClient(fSAC),
 			agentcontainers.WithSubAgentURL("test-subagent-url"),
 			agentcontainers.WithWatcher(watcher.NewNoop()),
-			agentcontainers.WithManifestInfo("test-user", "test-workspace"),
+			agentcontainers.WithManifestInfo("test-user", "test-workspace", "test-parent-agent"),
 		)
 		api.Init()
 		defer api.Close()
@@ -2150,7 +2154,9 @@ func TestAPI(t *testing.T) {
 			assert.Contains(t, envs, "CODER_WORKSPACE_AGENT_NAME=coder")
 			assert.Contains(t, envs, "CODER_WORKSPACE_NAME=test-workspace")
 			assert.Contains(t, envs, "CODER_WORKSPACE_OWNER_NAME=test-user")
+			assert.Contains(t, envs, "CODER_WORKSPACE_PARENT_AGENT_NAME=test-parent-agent")
 			assert.Contains(t, envs, "CODER_URL=test-subagent-url")
+			assert.Contains(t, envs, "CONTAINER_ID=test-container-id")
 			// First call should not have feature envs.
 			assert.NotContains(t, envs, "FEATURE_CODE_SERVER_OPTION_PORT=9090")
 			assert.NotContains(t, envs, "FEATURE_DOCKER_IN_DOCKER_OPTION_MOBY=false")
@@ -2161,7 +2167,9 @@ func TestAPI(t *testing.T) {
 			assert.Contains(t, envs, "CODER_WORKSPACE_AGENT_NAME=coder")
 			assert.Contains(t, envs, "CODER_WORKSPACE_NAME=test-workspace")
 			assert.Contains(t, envs, "CODER_WORKSPACE_OWNER_NAME=test-user")
+			assert.Contains(t, envs, "CODER_WORKSPACE_PARENT_AGENT_NAME=test-parent-agent")
 			assert.Contains(t, envs, "CODER_URL=test-subagent-url")
+			assert.Contains(t, envs, "CONTAINER_ID=test-container-id")
 			// Second call should have feature envs from the first config read.
 			assert.Contains(t, envs, "FEATURE_CODE_SERVER_OPTION_PORT=9090")
 			assert.Contains(t, envs, "FEATURE_DOCKER_IN_DOCKER_OPTION_MOBY=false")