diff --git a/crates/g3-cli/src/agent_mode.rs b/crates/g3-cli/src/agent_mode.rs
index 593d239..0532795 100644
--- a/crates/g3-cli/src/agent_mode.rs
+++ b/crates/g3-cli/src/agent_mode.rs
@@ -7,7 +7,7 @@ use tracing::debug;
 use g3_core::ui_writer::UiWriter;
 use g3_core::Agent;
 
-use crate::project_files::{combine_project_content, read_agents_config, read_project_memory, read_project_readme};
+use crate::project_files::{combine_project_content, read_agents_config, read_include_prompt, read_project_memory, read_project_readme};
 use crate::language_prompts::{get_language_prompts_for_workspace, get_agent_language_prompts_for_workspace_with_langs};
 use crate::simple_output::SimpleOutput;
 use crate::embedded_agents::load_agent_prompt;
@@ -25,6 +25,7 @@ pub async fn run_agent_mode(
     chrome_headless: bool,
     safari: bool,
     chat: bool,
+    include_prompt_path: Option<PathBuf>,
 ) -> Result<()> {
     use g3_core::find_incomplete_agent_session;
     use g3_core::get_agent_system_prompt;
@@ -186,12 +187,16 @@ pub async fn run_agent_mode(
         system_prompt
     };
 
+    // Read include prompt if specified
+    let include_prompt = read_include_prompt(include_prompt_path.as_deref());
+
     // Combine all content for the agent's context
     let combined_content = combine_project_content(
         agents_content_opt,
         readme_content_opt,
         memory_content_opt,
         language_content,
+        include_prompt,
         &workspace_dir,
     );
 
diff --git a/crates/g3-cli/src/lib.rs b/crates/g3-cli/src/lib.rs
index 7768fa9..9bf9df5 100644
--- a/crates/g3-cli/src/lib.rs
+++ b/crates/g3-cli/src/lib.rs
@@ -33,7 +33,7 @@ use accumulative::run_accumulative_mode;
 use agent_mode::run_agent_mode;
 use autonomous::run_autonomous;
 use interactive::run_interactive;
-use project_files::{combine_project_content, read_agents_config, read_project_memory, read_project_readme};
+use project_files::{combine_project_content, read_agents_config, read_include_prompt, read_project_memory, read_project_readme};
 use simple_output::SimpleOutput;
 use ui_writer_impl::ConsoleUiWriter;
 use utils::{initialize_logging, load_config_with_cli_overrides, setup_workspace_directory};
@@ -89,6 +89,7 @@ pub async fn run() -> Result<()> {
             cli.chrome_headless,
             cli.safari,
             cli.chat,
+            cli.include_prompt.clone(),
         )
         .await;
     }
@@ -101,6 +102,7 @@ pub async fn run() -> Result<()> {
     let readme_content = read_project_readme(&workspace_dir);
     let memory_content = read_project_memory(&workspace_dir);
     let language_content = language_prompts::get_language_prompts_for_workspace(&workspace_dir);
+    let include_prompt = read_include_prompt(cli.include_prompt.as_deref());
 
     // Create project model
     let project = create_project(&cli, &workspace_dir)?;
@@ -113,7 +115,7 @@ pub async fn run() -> Result<()> {
     let config = load_config_with_cli_overrides(&cli)?;
 
     // Combine AGENTS.md, README, and memory content
-    let combined_content = combine_project_content(agents_content, readme_content, memory_content, language_content, &workspace_dir);
+    let combined_content = combine_project_content(agents_content, readme_content, memory_content, language_content, include_prompt, &workspace_dir);
 
     run_console_mode(cli, config, project, combined_content, workspace_dir).await
 }