fix: prefer config var to env var (#2495)

codex-rs/core/src/client.rs

@@ -208,11 +208,7 @@ impl ModelClient {
                 req_builder = req_builder.header("chatgpt-account-id", account_id);
             }
 
-            let originator = self
-                .config
-                .internal_originator
-                .as_deref()
-                .unwrap_or("codex_cli_rs");
+            let originator = &self.config.responses_originator_header;
             req_builder = req_builder.header("originator", originator);
             req_builder = req_builder.header("User-Agent", get_codex_user_agent(Some(originator)));
 

codex-rs/core/src/config.rs

@@ -13,7 +13,6 @@ use crate::model_provider_info::built_in_model_providers;
 use crate::openai_model_info::get_model_info;
 use crate::protocol::AskForApproval;
 use crate::protocol::SandboxPolicy;
-use crate::spawn::CODEX_ORIGINATOR_ENV_VAR;
 use codex_login::AuthMode;
 use codex_protocol::config_types::ReasoningEffort;
 use codex_protocol::config_types::ReasoningSummary;
@@ -36,6 +35,8 @@ pub(crate) const PROJECT_DOC_MAX_BYTES: usize = 32 * 1024; // 32 KiB
 
 const CONFIG_TOML_FILE: &str = "config.toml";
 
+const DEFAULT_RESPONSES_ORIGINATOR_HEADER: &str = "codex_cli_rs";
+
 /// Application configuration loaded from disk and merged with overrides.
 #[derive(Debug, Clone, PartialEq)]
 pub struct Config {
@@ -164,7 +165,7 @@ pub struct Config {
     pub include_apply_patch_tool: bool,
 
     /// The value for the `originator` header included with Responses API requests.
-    pub internal_originator: Option<String>,
+    pub responses_originator_header: String,
 
     /// If set to `true`, the API key will be signed with the `originator` header.
     pub preferred_auth_method: AuthMode,
@@ -411,7 +412,7 @@ pub struct ConfigToml {
     pub experimental_instructions_file: Option<PathBuf>,
 
     /// The value for the `originator` header included with Responses API requests.
-    pub internal_originator: Option<String>,
+    pub responses_originator_header_internal_override: Option<String>,
 
     pub projects: Option<HashMap<String, ProjectConfig>>,
 
@@ -626,9 +627,9 @@ impl Config {
         let include_apply_patch_tool_val =
             include_apply_patch_tool.unwrap_or(model_family.uses_apply_patch_tool);
 
-        let originator = std::env::var(CODEX_ORIGINATOR_ENV_VAR)
-            .ok()
-            .or(cfg.internal_originator);
+        let responses_originator_header: String = cfg
+            .responses_originator_header_internal_override
+            .unwrap_or(DEFAULT_RESPONSES_ORIGINATOR_HEADER.to_owned());
 
         let config = Self {
             model,
@@ -683,7 +684,7 @@ impl Config {
             experimental_resume,
             include_plan_tool: include_plan_tool.unwrap_or(false),
             include_apply_patch_tool: include_apply_patch_tool_val,
-            internal_originator: originator,
+            responses_originator_header,
             preferred_auth_method: cfg.preferred_auth_method.unwrap_or(AuthMode::ChatGPT),
         };
         Ok(config)
@@ -1048,7 +1049,7 @@ disable_response_storage = true
                 base_instructions: None,
                 include_plan_tool: false,
                 include_apply_patch_tool: false,
-                internal_originator: None,
+                responses_originator_header: "codex_cli_rs".to_string(),
                 preferred_auth_method: AuthMode::ChatGPT,
             },
             o3_profile_config
@@ -1101,7 +1102,7 @@ disable_response_storage = true
             base_instructions: None,
             include_plan_tool: false,
             include_apply_patch_tool: false,
-            internal_originator: None,
+            responses_originator_header: "codex_cli_rs".to_string(),
             preferred_auth_method: AuthMode::ChatGPT,
         };
 
@@ -1169,7 +1170,7 @@ disable_response_storage = true
             base_instructions: None,
             include_plan_tool: false,
             include_apply_patch_tool: false,
-            internal_originator: None,
+            responses_originator_header: "codex_cli_rs".to_string(),
             preferred_auth_method: AuthMode::ChatGPT,
         };
 

codex-rs/core/src/spawn.rs

@@ -22,9 +22,6 @@ pub const CODEX_SANDBOX_NETWORK_DISABLED_ENV_VAR: &str = "CODEX_SANDBOX_NETWORK_
 /// accommodate sandboxing configuration and other sandboxing mechanisms.
 pub const CODEX_SANDBOX_ENV_VAR: &str = "CODEX_SANDBOX";
 
-/// Set this to change the originator sent with all network requests.
-pub const CODEX_ORIGINATOR_ENV_VAR: &str = "CODEX_ORIGINATOR";
-
 #[derive(Debug, Clone, Copy)]
 pub enum StdioPolicy {
     RedirectForShellTool,

codex-rs/core/tests/client.rs

@@ -260,7 +260,7 @@ async fn originator_config_override_is_used() {
     let codex_home = TempDir::new().unwrap();
     let mut config = load_default_config_for_test(&codex_home);
     config.model_provider = model_provider;
-    config.internal_originator = Some("my_override".to_string());
+    config.responses_originator_header = "my_override".to_owned();
 
     let conversation_manager = ConversationManager::default();
     let codex = conversation_manager