coder
diff --git a/‎agent/agent.go‎
Lines changed: 5 additions & 0 deletions b/‎agent/agent.go‎
Lines changed: 5 additions & 0 deletions
diff --git a/‎cli/agent.go‎
Lines changed: 13 additions & 0 deletions b/‎cli/agent.go‎
Lines changed: 13 additions & 0 deletions
@@ -89,6 +89,7 @@ type Options struct {
 	ServiceBannerRefreshInterval time.Duration
 	BlockFileTransfer            bool
 	Execer                       agentexec.Execer
+	SubAgent                     bool
 
 	ExperimentalDevcontainersEnabled bool
 	ContainerAPIOptions              []agentcontainers.Option // Enable ExperimentalDevcontainersEnabled for these to be effective.
@@ -190,6 +191,8 @@ func New(options Options) Agent {
 		metrics:            newAgentMetrics(prometheusRegistry),
 		execer:             options.Execer,
 
+		subAgent: options.SubAgent,
+
 		experimentalDevcontainersEnabled: options.ExperimentalDevcontainersEnabled,
 		containerAPIOptions:              options.ContainerAPIOptions,
 	}
@@ -272,6 +275,8 @@ type agent struct {
 	metrics *agentMetrics
 	execer  agentexec.Execer
 
+	subAgent bool
+
 	experimentalDevcontainersEnabled bool
 	containerAPIOptions              []agentcontainers.Option
 	containerAPI                     atomic.Pointer[agentcontainers.API] // Set by apiHandler.
 
@@ -54,6 +54,7 @@ func (r *RootCmd) workspaceAgent() *serpent.Command {
 		blockFileTransfer   bool
 		agentHeaderCommand  string
 		agentHeader         []string
+		subAgent            bool
 
 		experimentalDevcontainersEnabled bool
 	)
@@ -361,6 +362,7 @@ func (r *RootCmd) workspaceAgent() *serpent.Command {
 					PrometheusRegistry:               prometheusRegistry,
 					BlockFileTransfer:                blockFileTransfer,
 					Execer:                           execer,
+					SubAgent:                         subAgent,
 					ExperimentalDevcontainersEnabled: experimentalDevcontainersEnabled,
 				})
 
@@ -507,6 +509,17 @@ func (r *RootCmd) workspaceAgent() *serpent.Command {
 			Description: "Allow the agent to automatically detect running devcontainers.",
 			Value:       serpent.BoolOf(&experimentalDevcontainersEnabled),
 		},
+		{
+			Flag:        "is-sub-agent",
+			Default:     "false",
+			Env:         "CODER_AGENT_IS_SUB_AGENT",
+			Description: "Specify whether this is a sub agent or not.",
+			Value:       serpent.BoolOf(&subAgent),
+			// As `coderd` handles the creation of sub-agents, it does not make
+			// sense for this to be exposed. We do not want people setting an
+			// agent as a sub-agent if it is not.
+			Hidden: true,
+		},
 	}
 
 	return cmd