feat(acp): add _goose/unstable/session/extensions/apply method (#11081)

Signed-off-by: Matt Toohey <contact@matttoohey.com>

crates/goose-sdk-types/src/custom_requests.rs

@@ -45,6 +45,25 @@ pub struct RemoveSessionExtensionRequest {
     pub name: String,
 }
 
+/// Recreate the session's provider, keeping its current provider and model,
+/// so that the session's current extension list takes effect.
+///
+/// Useful after adding or removing session extensions when the provider
+/// forwards extensions to a downstream session (ACP harness providers such as
+/// claude-acp and codex-acp). Those providers snapshot the extension list when
+/// they are built, so extension changes only reach them on rebuild: the
+/// provider is replaced with a new instance whose downstream session is
+/// created with the updated extension list.
+///
+/// Providers that don't forward extensions pick up extension changes
+/// immediately; for them this call is not required.
+#[derive(Debug, Default, Clone, Serialize, Deserialize, JsonSchema, JsonRpcRequest)]
+#[request(method = "_goose/unstable/session/extensions/apply", response = EmptyResponse)]
+#[serde(rename_all = "camelCase")]
+pub struct ApplySessionExtensionsRequest {
+    pub session_id: String,
+}
+
 /// List all tools available in a session.
 #[derive(Debug, Default, Clone, Serialize, Deserialize, JsonSchema, JsonRpcRequest)]
 #[request(method = "_goose/unstable/tools/list", response = GetToolsResponse)]

crates/goose/acp-meta.json

@@ -10,6 +10,11 @@
       "requestType": "RemoveSessionExtensionRequest_unstable",
       "responseType": "EmptyResponse"
     },
+    {
+      "method": "_goose/unstable/session/extensions/apply",
+      "requestType": "ApplySessionExtensionsRequest_unstable",
+      "responseType": "EmptyResponse"
+    },
     {
       "method": "_goose/unstable/tools/list",
       "requestType": "GetToolsRequest_unstable",

crates/goose/acp-schema.json

@@ -452,6 +452,20 @@
       "x-side": "agent",
       "x-method": "_goose/unstable/session/extensions/remove"
     },
+    "ApplySessionExtensionsRequest_unstable": {
+      "type": "object",
+      "properties": {
+        "sessionId": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "sessionId"
+      ],
+      "description": "Recreate the session's provider, keeping its current provider and model,\nso that the session's current extension list takes effect.\n\nUseful after adding or removing session extensions when the provider\nforwards extensions to a downstream session (ACP harness providers such as\nclaude-acp and codex-acp). Those providers snapshot the extension list when\nthey are built, so extension changes only reach them on rebuild: the\nprovider is replaced with a new instance whose downstream session is\ncreated with the updated extension list.\n\nProviders that don't forward extensions pick up extension changes\nimmediately; for them this call is not required.",
+      "x-side": "agent",
+      "x-method": "_goose/unstable/session/extensions/apply"
+    },
     "GetToolsRequest_unstable": {
       "type": "object",
       "properties": {
@@ -6917,6 +6931,15 @@
                   "description": "Params for _goose/unstable/session/extensions/remove",
                   "title": "RemoveSessionExtensionRequest_unstable"
                 },
+                {
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/ApplySessionExtensionsRequest_unstable"
+                    }
+                  ],
+                  "description": "Params for _goose/unstable/session/extensions/apply",
+                  "title": "ApplySessionExtensionsRequest_unstable"
+                },
                 {
                   "allOf": [
                     {

crates/goose/src/acp/mod.rs

@@ -12,5 +12,5 @@ pub mod transport;
 pub use common::{map_permission_response, PermissionDecision};
 pub use goose_sdk_types::{custom_notifications, custom_requests};
 pub use provider::{
-    extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
+    resolve_extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
 };

crates/goose/src/acp/provider.rs

@@ -33,7 +33,7 @@ use tokio::sync::{mpsc, oneshot, Mutex as TokioMutex};
 use tokio_util::compat::{TokioAsyncReadCompatExt as _, TokioAsyncWriteCompatExt as _};
 
 use crate::acp::{map_permission_response, PermissionDecision};
-use crate::config::{ExtensionConfig, GooseMode};
+use crate::config::{Config, ExtensionConfig, GooseMode};
 use crate::context_mgmt::format_message_for_compacting;
 use crate::conversation::message::{Message, MessageContent, TOOL_META_EXTERNAL_DISPATCH_KEY};
 use crate::conversation::Conversation;
@@ -1435,7 +1435,33 @@ fn select_mode_id(candidates: &[String], modes: Option<&SessionModeState>) -> Op
     }
 }
 
-pub fn extension_configs_to_mcp_servers(configs: &[ExtensionConfig]) -> Vec<McpServer> {
+/// Extension configs are persisted unresolved: secrets stay in the keyring behind
+/// `env_keys`, and uris/headers may still hold `${VAR}` placeholders. Resolve them
+/// before handing the servers to the downstream agent, which launches them itself
+/// and so needs the real values. An extension that fails to resolve (e.g. a stale
+/// `env_keys` entry with no stored secret) is logged and skipped rather than
+/// failing the whole provider build, matching how the local extension path
+/// contains load errors to the one extension.
+pub async fn resolve_extension_configs_to_mcp_servers(
+    configs: Vec<ExtensionConfig>,
+    config: &Config,
+) -> Vec<McpServer> {
+    let mut resolved = Vec::with_capacity(configs.len());
+    for extension in configs {
+        let name = extension.name();
+        match extension.resolve(config).await {
+            Ok(extension) => resolved.push(extension),
+            Err(error) => tracing::warn!(
+                extension = %name,
+                %error,
+                "skipping extension that failed to resolve; it will not be forwarded to the ACP agent"
+            ),
+        }
+    }
+    extension_configs_to_mcp_servers(&resolved)
+}
+
+fn extension_configs_to_mcp_servers(configs: &[ExtensionConfig]) -> Vec<McpServer> {
     let mut servers = Vec::new();
 
     for config in configs {
@@ -2597,6 +2623,112 @@ mod tests {
         }
     }
 
+    #[tokio::test]
+    async fn test_resolve_extension_configs_to_mcp_servers_fills_in_secrets() {
+        let dir = tempfile::tempdir().unwrap();
+        let config = Config::new_with_file_secrets(
+            dir.path().join("config.yaml"),
+            dir.path().join("secrets.yaml"),
+        )
+        .unwrap();
+        config
+            .set("GITHUB_TOKEN", &"ghp_xxxxxxxxxxxx", true)
+            .unwrap();
+
+        let servers = resolve_extension_configs_to_mcp_servers(
+            vec![
+                ExtensionConfig::Stdio {
+                    name: "github-stdio".into(),
+                    description: String::new(),
+                    cmd: "/path/to/github-mcp-server".into(),
+                    args: vec![],
+                    envs: Envs::default(),
+                    env_keys: vec!["GITHUB_TOKEN".into()],
+                    timeout: None,
+                    cwd: None,
+                    bundled: None,
+                    available_tools: vec![],
+                },
+                ExtensionConfig::StreamableHttp {
+                    name: "github-http".into(),
+                    description: String::new(),
+                    uri: "https://api.githubcopilot.com/mcp/".into(),
+                    envs: Envs::default(),
+                    env_keys: vec!["GITHUB_TOKEN".into()],
+                    headers: HashMap::from([(
+                        "Authorization".into(),
+                        "Bearer ${GITHUB_TOKEN}".into(),
+                    )]),
+                    timeout: None,
+                    socket: None,
+                    bundled: None,
+                    available_tools: vec![],
+                },
+            ],
+            &config,
+        )
+        .await;
+
+        let McpServer::Stdio(stdio) = &servers[0] else {
+            panic!("expected stdio server");
+        };
+        assert_eq!(stdio.env.len(), 1);
+        assert_eq!(stdio.env[0].name, "GITHUB_TOKEN");
+        assert_eq!(stdio.env[0].value, "ghp_xxxxxxxxxxxx");
+
+        let McpServer::Http(http) = &servers[1] else {
+            panic!("expected http server");
+        };
+        assert_eq!(http.headers[0].value, "Bearer ghp_xxxxxxxxxxxx");
+    }
+
+    #[tokio::test]
+    async fn test_resolve_extension_configs_to_mcp_servers_skips_unresolvable() {
+        let dir = tempfile::tempdir().unwrap();
+        let config = Config::new_with_file_secrets(
+            dir.path().join("config.yaml"),
+            dir.path().join("secrets.yaml"),
+        )
+        .unwrap();
+
+        let servers = resolve_extension_configs_to_mcp_servers(
+            vec![
+                ExtensionConfig::Stdio {
+                    name: "missing-secret".into(),
+                    description: String::new(),
+                    cmd: "/path/to/server".into(),
+                    args: vec![],
+                    envs: Envs::default(),
+                    env_keys: vec!["NEVER_STORED_KEY".into()],
+                    timeout: None,
+                    cwd: None,
+                    bundled: None,
+                    available_tools: vec![],
+                },
+                ExtensionConfig::Stdio {
+                    name: "resolvable".into(),
+                    description: String::new(),
+                    cmd: "/path/to/server".into(),
+                    args: vec![],
+                    envs: Envs::default(),
+                    env_keys: vec![],
+                    timeout: None,
+                    cwd: None,
+                    bundled: None,
+                    available_tools: vec![],
+                },
+            ],
+            &config,
+        )
+        .await;
+
+        assert_eq!(servers.len(), 1);
+        let McpServer::Stdio(stdio) = &servers[0] else {
+            panic!("expected stdio server");
+        };
+        assert_eq!(stdio.name, "resolvable");
+    }
+
     #[test]
     fn test_sse_skips() {
         let config = ExtensionConfig::Sse {

crates/goose/src/acp/server/custom_dispatch.rs

@@ -45,6 +45,14 @@ impl GooseAcpAgent {
         self.on_remove_session_extension(req).await
     }
 
+    #[custom_method(ApplySessionExtensionsRequest)]
+    async fn dispatch_apply_session_extensions(
+        &self,
+        req: ApplySessionExtensionsRequest,
+    ) -> Result<EmptyResponse, agent_client_protocol::Error> {
+        self.on_apply_session_extensions(req).await
+    }
+
     #[custom_method(GetToolsRequest)]
     async fn dispatch_get_tools(
         &self,

crates/goose/src/acp/server/extensions.rs

@@ -31,6 +31,28 @@ impl GooseAcpAgent {
         Ok(EmptyResponse {})
     }
 
+    pub(super) async fn on_apply_session_extensions(
+        &self,
+        req: ApplySessionExtensionsRequest,
+    ) -> Result<EmptyResponse, agent_client_protocol::Error> {
+        let session_id = &req.session_id;
+        let agent = self.get_session_agent(session_id).await?;
+        let provider = agent
+            .provider()
+            .await
+            .internal_err_ctx("Failed to get provider")?;
+        let provider_name = provider.get_name().to_string();
+        let model_config = agent
+            .model_config_for_session(session_id)
+            .await
+            .internal_err_ctx("Failed to resolve model config")?;
+        agent
+            .recreate_provider_for_session(session_id, &provider_name, model_config)
+            .await
+            .internal_err_ctx("Failed to recreate provider")?;
+        Ok(EmptyResponse {})
+    }
+
     pub(super) async fn on_get_config_extensions(
         &self,
     ) -> Result<GetConfigExtensionsResponse, agent_client_protocol::Error> {

crates/goose/src/providers/amp_acp.rs

@@ -4,7 +4,7 @@ use std::collections::HashMap;
 use std::path::PathBuf;
 
 use crate::acp::{
-    extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
+    resolve_extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
 };
 use crate::config::search_path::SearchPaths;
 use crate::config::{Config, GooseMode};
@@ -75,7 +75,7 @@ impl ProviderDef for AmpAcpProvider {
                 env: vec![],
                 env_remove: vec![],
                 work_dir: working_dir,
-                mcp_servers: extension_configs_to_mcp_servers(&extensions),
+                mcp_servers: resolve_extension_configs_to_mcp_servers(extensions, config).await,
                 session_mode_id: mode_mapping[&goose_mode].first().cloned(),
                 session_config_options: vec![],
                 model_config_option_id: None,

crates/goose/src/providers/claude_acp.rs

@@ -4,7 +4,7 @@ use std::collections::HashMap;
 use std::path::PathBuf;
 
 use crate::acp::{
-    extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
+    resolve_extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
 };
 use crate::config::search_path::SearchPaths;
 use crate::config::{Config, GooseMode};
@@ -79,7 +79,7 @@ impl ProviderDef for ClaudeAcpProvider {
                 // Prevent nested-session detection in claude-agent-acp (wraps Claude Code)
                 env_remove: vec!["CLAUDECODE".to_string()],
                 work_dir: working_dir,
-                mcp_servers: extension_configs_to_mcp_servers(&extensions),
+                mcp_servers: resolve_extension_configs_to_mcp_servers(extensions, config).await,
                 session_mode_id: mode_mapping[&goose_mode].first().cloned(),
                 session_config_options: vec![],
                 // claude-agent-acp advertises the model as a "model" select

crates/goose/src/providers/codex_acp.rs

@@ -4,7 +4,7 @@ use std::collections::HashMap;
 use std::path::PathBuf;
 
 use crate::acp::{
-    extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
+    resolve_extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
 };
 use crate::config::search_path::SearchPaths;
 use crate::config::{Config, GooseMode};
@@ -61,7 +61,7 @@ impl ProviderDef for CodexAcpProvider {
                 .with_npm()
                 .resolve(CODEX_ACP_PROVIDER_NAME)?;
             let goose_mode = config.get_goose_mode().unwrap_or(GooseMode::Auto);
-            let mcp_servers = extension_configs_to_mcp_servers(&extensions);
+            let mcp_servers = resolve_extension_configs_to_mcp_servers(extensions, config).await;
 
             let mode_mapping = HashMap::from([
                 (GooseMode::Auto, vec!["agent-full-access".to_string()]),

crates/goose/src/providers/copilot_acp.rs

@@ -4,7 +4,7 @@ use std::collections::HashMap;
 use std::path::PathBuf;
 
 use crate::acp::{
-    extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
+    resolve_extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
 };
 use crate::config::search_path::SearchPaths;
 use crate::config::{Config, GooseMode};
@@ -89,7 +89,7 @@ impl ProviderDef for CopilotAcpProvider {
                 env: vec![],
                 env_remove: vec![],
                 work_dir: working_dir,
-                mcp_servers: extension_configs_to_mcp_servers(&extensions),
+                mcp_servers: resolve_extension_configs_to_mcp_servers(extensions, config).await,
                 session_mode_id: mode_mapping[&goose_mode].first().cloned(),
                 session_config_options,
                 model_config_option_id: Some("model".to_string()),

crates/goose/src/providers/pi_acp.rs

@@ -4,7 +4,7 @@ use std::collections::HashMap;
 use std::path::PathBuf;
 
 use crate::acp::{
-    extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
+    resolve_extension_configs_to_mcp_servers, AcpProvider, AcpProviderConfig, ACP_CURRENT_MODEL,
 };
 use crate::config::search_path::SearchPaths;
 use crate::config::{Config, GooseMode};
@@ -78,7 +78,7 @@ impl ProviderDef for PiAcpProvider {
                 env: vec![],
                 env_remove: vec![],
                 work_dir: working_dir,
-                mcp_servers: extension_configs_to_mcp_servers(&extensions),
+                mcp_servers: resolve_extension_configs_to_mcp_servers(extensions, config).await,
                 session_mode_id: None,
                 session_config_options,
                 model_config_option_id: Some("model".to_string()),

crates/goose/tests/acp_custom_requests_test.rs

@@ -397,6 +397,35 @@ fn test_custom_session_extensions_add_list_remove() {
     });
 }
 
+#[test]
+#[serial]
+fn test_custom_session_extensions_apply_recreates_provider() {
+    write_acp_global_config(DEFAULT_ACP_TEST_CONFIG);
+    run_test(async move {
+        let openai = OpenAiFixture::new(vec![], Arc::new(EnforceSessionId::default())).await;
+        let mut conn = AcpServerConnection::new(TestConnectionConfig::default(), openai).await;
+
+        let SessionData { session, .. } = conn.new_session().await.unwrap();
+        let session_id = session.session_id().0.clone();
+
+        let result = send_custom(
+            conn.cx(),
+            "_goose/unstable/session/extensions/apply",
+            serde_json::json!({ "sessionId": session_id.clone() }),
+        )
+        .await;
+        assert!(result.is_ok(), "expected ok, got: {:?}", result);
+
+        let result = send_custom(
+            conn.cx(),
+            "_goose/unstable/session/extensions/apply",
+            serde_json::json!({ "sessionId": "missing-session" }),
+        )
+        .await;
+        assert!(result.is_err(), "apply for unknown session should fail");
+    });
+}
+
 #[test]
 #[serial]
 fn test_custom_get_available_extensions() {

ui/sdk/src/generated/client.gen.ts

@@ -11,6 +11,7 @@ import type { Client } from "@agentclientprotocol/sdk";
 import type {
   AddConfigExtensionRequest_unstable,
   AddSessionExtensionRequest_unstable,
+  ApplySessionExtensionsRequest_unstable,
   AppsDeleteRequest_unstable,
   AppsDeleteResponse_unstable,
   AppsExportRequest_unstable,
@@ -297,6 +298,15 @@ export class GooseExtClient {
     );
   }
 
+  async sessionExtensionsApply_unstable(
+    params: ApplySessionExtensionsRequest_unstable,
+  ): Promise<void> {
+    await this.conn.extMethod(
+      "_goose/unstable/session/extensions/apply",
+      params,
+    );
+  }
+
   async toolsList_unstable(
     params: GetToolsRequest_unstable,
   ): Promise<GetToolsResponse_unstable> {

ui/sdk/src/generated/types.gen.ts

@@ -254,6 +254,24 @@ export type RemoveSessionExtensionRequest_unstable = {
     name: string;
 };
 
+/**
+ * Recreate the session's provider, keeping its current provider and model,
+ * so that the session's current extension list takes effect.
+ *
+ * Useful after adding or removing session extensions when the provider
+ * forwards extensions to a downstream session (ACP harness providers such as
+ * claude-acp and codex-acp). Those providers snapshot the extension list when
+ * they are built, so extension changes only reach them on rebuild: the
+ * provider is replaced with a new instance whose downstream session is
+ * created with the updated extension list.
+ *
+ * Providers that don't forward extensions pick up extension changes
+ * immediately; for them this call is not required.
+ */
+export type ApplySessionExtensionsRequest_unstable = {
+    sessionId: string;
+};
+
 /**
  * List all tools available in a session.
  */
@@ -2637,7 +2655,7 @@ export type RecipeParamsAction = 'submit' | 'cancel';
 export type ExtRequest = {
     id: string;
     method: string;
-    params?: AddSessionExtensionRequest_unstable | RemoveSessionExtensionRequest_unstable | GetToolsRequest_unstable | SetToolPermissionsRequest_unstable | GooseToolCallRequest_unstable | ReadResourceRequest_unstable | AppsListRequest_unstable | AppsExportRequest_unstable | AppsImportRequest_unstable | AppsDeleteRequest_unstable | UpdateWorkingDirRequest_unstable | SetSessionSystemPromptRequest_unstable | SteerSessionRequest_unstable | DiagnosticsGetRequest_unstable | ListPromptsRequest_unstable | GetPromptRequest_unstable | SavePromptRequest_unstable | ResetPromptRequest_unstable | DeleteSessionRequest | GetConfigExtensionsRequest_unstable | GetAvailableExtensionsRequest_unstable | AddConfigExtensionRequest_unstable | RemoveConfigExtensionRequest_unstable | SetConfigExtensionEnabledRequest_unstable | GetSessionExtensionsRequest_unstable | ListProvidersRequest_unstable | ProviderSupportedModelsListRequest_unstable | ProviderCatalogListRequest_unstable | ProviderSetupCatalogListRequest_unstable | ProviderCatalogTemplateRequest_unstable | CustomProviderCreateRequest_unstable | CustomProviderReadRequest_unstable | CustomProviderUpdateRequest_unstable | CustomProviderDeleteRequest_unstable | RefreshProviderInventoryRequest_unstable | ProviderConfigReadRequest_unstable | ProviderConfigStatusRequest_unstable | ProviderConfigSaveRequest_unstable | ProviderConfigDeleteRequest_unstable | ProviderConfigAuthenticateRequest_unstable | ProviderSecretsListRequest_unstable | ProviderSecretDeleteRequest_unstable | CanonicalModelInfoRequest_unstable | PreferencesReadRequest_unstable | PreferencesSaveRequest_unstable | PreferencesRemoveRequest_unstable | ConfigReadRequest_unstable | ConfigUpsertRequest_unstable | ConfigRemoveRequest_unstable | ConfigReadAllRequest_unstable | DefaultsReadRequest_unstable | DefaultsSaveRequest_unstable | DefaultsClearRequest_unstable | OnboardingImportScanRequest_unstable | OnboardingImportApplyRequest_unstable | ExportSessionRequest_unstable | ImportSessionRequest_unstable | ShareSessionNostrRequest_unstable | EncodeRecipeRequest_unstable | DecodeRecipeRequest_unstable | ScanRecipeRequest_unstable | ListRecipesRequest_unstable | DeleteRecipeRequest_unstable | ScheduleRecipeRequest_unstable | SetRecipeSlashCommandRequest_unstable | SaveRecipeRequest_unstable | ParseRecipeRequest_unstable | RecipeToYamlRequest_unstable | ListSchedulesRequest_unstable | ListScheduleSessionsRequest_unstable | CreateScheduleRequest_unstable | DeleteScheduleRequest_unstable | PauseScheduleRequest_unstable | UnpauseScheduleRequest_unstable | UpdateScheduleRequest_unstable | RunScheduleNowRequest_unstable | KillRunningJobRequest_unstable | InspectRunningJobRequest_unstable | GetSessionInfoRequest_unstable | TruncateSessionConversationRequest_unstable | UpdateSessionProjectRequest_unstable | RenameSessionRequest_unstable | ArchiveSessionRequest_unstable | UnarchiveSessionRequest_unstable | CreateSourceRequest_unstable | ListSourcesRequest_unstable | ListAgentMentionsRequest_unstable | ListSlashCommandsRequest_unstable | UpdateSourceRequest_unstable | DeleteSourceRequest_unstable | ExportSourceRequest_unstable | ImportSourcesRequest_unstable | DictationTranscribeRequest_unstable | DictationConfigRequest_unstable | DictationSecretSaveRequest_unstable | DictationSecretDeleteRequest_unstable | DictationModelsListRequest_unstable | DictationModelDownloadRequest_unstable | DictationModelDownloadProgressRequest_unstable | DictationModelCancelRequest_unstable | DictationModelDeleteRequest_unstable | DictationModelSelectRequest_unstable | LocalInferenceModelsListRequest_unstable | LocalInferenceModelDownloadRequest_unstable | LocalInferenceModelDownloadProgressRequest_unstable | LocalInferenceModelDownloadCancelRequest_unstable | LocalInferenceModelDeleteRequest_unstable | LocalInferenceModelEvictRequest_unstable | LocalInferenceModelSettingsReadRequest_unstable | LocalInferenceModelSettingsUpdateRequest_unstable | LocalInferenceHuggingFaceSearchRequest_unstable | LocalInferenceHuggingFaceRepoVariantsRequest_unstable | LocalInferenceBuiltinChatTemplatesListRequest_unstable | {
+    params?: AddSessionExtensionRequest_unstable | RemoveSessionExtensionRequest_unstable | ApplySessionExtensionsRequest_unstable | GetToolsRequest_unstable | SetToolPermissionsRequest_unstable | GooseToolCallRequest_unstable | ReadResourceRequest_unstable | AppsListRequest_unstable | AppsExportRequest_unstable | AppsImportRequest_unstable | AppsDeleteRequest_unstable | UpdateWorkingDirRequest_unstable | SetSessionSystemPromptRequest_unstable | SteerSessionRequest_unstable | DiagnosticsGetRequest_unstable | ListPromptsRequest_unstable | GetPromptRequest_unstable | SavePromptRequest_unstable | ResetPromptRequest_unstable | DeleteSessionRequest | GetConfigExtensionsRequest_unstable | GetAvailableExtensionsRequest_unstable | AddConfigExtensionRequest_unstable | RemoveConfigExtensionRequest_unstable | SetConfigExtensionEnabledRequest_unstable | GetSessionExtensionsRequest_unstable | ListProvidersRequest_unstable | ProviderSupportedModelsListRequest_unstable | ProviderCatalogListRequest_unstable | ProviderSetupCatalogListRequest_unstable | ProviderCatalogTemplateRequest_unstable | CustomProviderCreateRequest_unstable | CustomProviderReadRequest_unstable | CustomProviderUpdateRequest_unstable | CustomProviderDeleteRequest_unstable | RefreshProviderInventoryRequest_unstable | ProviderConfigReadRequest_unstable | ProviderConfigStatusRequest_unstable | ProviderConfigSaveRequest_unstable | ProviderConfigDeleteRequest_unstable | ProviderConfigAuthenticateRequest_unstable | ProviderSecretsListRequest_unstable | ProviderSecretDeleteRequest_unstable | CanonicalModelInfoRequest_unstable | PreferencesReadRequest_unstable | PreferencesSaveRequest_unstable | PreferencesRemoveRequest_unstable | ConfigReadRequest_unstable | ConfigUpsertRequest_unstable | ConfigRemoveRequest_unstable | ConfigReadAllRequest_unstable | DefaultsReadRequest_unstable | DefaultsSaveRequest_unstable | DefaultsClearRequest_unstable | OnboardingImportScanRequest_unstable | OnboardingImportApplyRequest_unstable | ExportSessionRequest_unstable | ImportSessionRequest_unstable | ShareSessionNostrRequest_unstable | EncodeRecipeRequest_unstable | DecodeRecipeRequest_unstable | ScanRecipeRequest_unstable | ListRecipesRequest_unstable | DeleteRecipeRequest_unstable | ScheduleRecipeRequest_unstable | SetRecipeSlashCommandRequest_unstable | SaveRecipeRequest_unstable | ParseRecipeRequest_unstable | RecipeToYamlRequest_unstable | ListSchedulesRequest_unstable | ListScheduleSessionsRequest_unstable | CreateScheduleRequest_unstable | DeleteScheduleRequest_unstable | PauseScheduleRequest_unstable | UnpauseScheduleRequest_unstable | UpdateScheduleRequest_unstable | RunScheduleNowRequest_unstable | KillRunningJobRequest_unstable | InspectRunningJobRequest_unstable | GetSessionInfoRequest_unstable | TruncateSessionConversationRequest_unstable | UpdateSessionProjectRequest_unstable | RenameSessionRequest_unstable | ArchiveSessionRequest_unstable | UnarchiveSessionRequest_unstable | CreateSourceRequest_unstable | ListSourcesRequest_unstable | ListAgentMentionsRequest_unstable | ListSlashCommandsRequest_unstable | UpdateSourceRequest_unstable | DeleteSourceRequest_unstable | ExportSourceRequest_unstable | ImportSourcesRequest_unstable | DictationTranscribeRequest_unstable | DictationConfigRequest_unstable | DictationSecretSaveRequest_unstable | DictationSecretDeleteRequest_unstable | DictationModelsListRequest_unstable | DictationModelDownloadRequest_unstable | DictationModelDownloadProgressRequest_unstable | DictationModelCancelRequest_unstable | DictationModelDeleteRequest_unstable | DictationModelSelectRequest_unstable | LocalInferenceModelsListRequest_unstable | LocalInferenceModelDownloadRequest_unstable | LocalInferenceModelDownloadProgressRequest_unstable | LocalInferenceModelDownloadCancelRequest_unstable | LocalInferenceModelDeleteRequest_unstable | LocalInferenceModelEvictRequest_unstable | LocalInferenceModelSettingsReadRequest_unstable | LocalInferenceModelSettingsUpdateRequest_unstable | LocalInferenceHuggingFaceSearchRequest_unstable | LocalInferenceHuggingFaceRepoVariantsRequest_unstable | LocalInferenceBuiltinChatTemplatesListRequest_unstable | {
         [key: string]: unknown;
     } | null;
 };

ui/sdk/src/generated/zod.gen.ts

@@ -208,6 +208,24 @@ export const zRemoveSessionExtensionRequest_unstable = z.object({
     name: z.string()
 });
 
+/**
+ * Recreate the session's provider, keeping its current provider and model,
+ * so that the session's current extension list takes effect.
+ *
+ * Useful after adding or removing session extensions when the provider
+ * forwards extensions to a downstream session (ACP harness providers such as
+ * claude-acp and codex-acp). Those providers snapshot the extension list when
+ * they are built, so extension changes only reach them on rebuild: the
+ * provider is replaced with a new instance whose downstream session is
+ * created with the updated extension list.
+ *
+ * Providers that don't forward extensions pick up extension changes
+ * immediately; for them this call is not required.
+ */
+export const zApplySessionExtensionsRequest_unstable = z.object({
+    sessionId: z.string()
+});
+
 /**
  * List all tools available in a session.
  */
@@ -2832,6 +2850,7 @@ export const zExtRequest = z.object({
         z.union([
             zAddSessionExtensionRequest_unstable,
             zRemoveSessionExtensionRequest_unstable,
+            zApplySessionExtensionsRequest_unstable,
             zGetToolsRequest_unstable,
             zSetToolPermissionsRequest_unstable,
             zGooseToolCallRequest_unstable,