diff --git a/dist/agent.js b/dist/agent.js
index 0000000..1111111 100644
--- a/dist/agent.js
+++ b/dist/agent.js
@@ -42,6 +42,8 @@ export class Agent {
         this.followUpMode = opts.followUpMode || "one-at-a-time";
         this.streamFn = opts.streamFn || streamSimple;
         this.getApiKey = opts.getApiKey;
+        // PATCH: Support extraParams for provider-specific features (e.g., GLM-4.7 thinking mode)
+        this.extraParams = opts.extraParams;
     }
     get state() {
         return this._state;
@@ -193,6 +195,8 @@ export class Agent {
             convertToLlm: this.convertToLlm,
             transformContext: this.transformContext,
             getApiKey: this.getApiKey,
+            // PATCH: Pass extraParams through to stream function
+            extraParams: this.extraParams,
             getSteeringMessages: async () => {
                 if (this.steeringMode === "one-at-a-time") {
                     if (this.steeringQueue.length > 0) {
diff --git a/dist/agent.d.ts b/dist/agent.d.ts
index 0000000..1111111 100644
--- a/dist/agent.d.ts
+++ b/dist/agent.d.ts
@@ -33,6 +33,10 @@ export interface AgentOptions {
      * Useful for expiring tokens (e.g., GitHub Copilot OAuth).
      */
     getApiKey?: (provider: string) => Promise<string | undefined> | string | undefined;
+    /**
+     * Extra params to pass to the provider API (e.g., Z.AI GLM thinking mode params).
+     */
+    extraParams?: Record<string, unknown>;
 }
 export declare class Agent {
     private _state;
@@ -45,6 +49,8 @@ export declare class Agent {
     private followUpMode;
     streamFn: StreamFn;
     getApiKey?: (provider: string) => Promise<string | undefined> | string | undefined;
+    /** Extra params to pass to the provider API. */
+    extraParams?: Record<string, unknown>;
     private runningPrompt?;
     private resolveRunningPrompt?;
     constructor(opts?: AgentOptions);