diff --git a/src/acp-agent.ts b/src/acp-agent.ts
index 6177693..6253d2c 100644
--- a/src/acp-agent.ts
+++ b/src/acp-agent.ts
@@ -670,10 +670,16 @@ export class ClaudeAcpAgent implements Agent {
       extraArgs["session-id"] = sessionId;
     }
 
+    // Configure thinking tokens from environment variable
+    const maxThinkingTokens = process.env.MAX_THINKING_TOKENS
+      ? parseInt(process.env.MAX_THINKING_TOKENS, 10)
+      : undefined;
+
     const options: Options = {
       systemPrompt,
       settingSources: ["user", "project", "local"],
       stderr: (err) => this.logger.error(err),
+      ...(maxThinkingTokens !== undefined && { maxThinkingTokens }),
       ...userProvidedOptions,
       // Override certain fields that must be controlled by ACP
       cwd: params.cwd,
diff --git a/src/mcp-server.ts b/src/mcp-server.ts
index 320b3b7..2bf1784 100644
--- a/src/mcp-server.ts
+++ b/src/mcp-server.ts
@@ -175,8 +175,8 @@ Usage:
 
             if (result.wasLimited) {
               readInfo += `Read ${result.linesRead} lines (hit 50KB limit). `;
-            } else {
-              readInfo += `Read lines ${input.offset}-${result.linesRead}. `;
+            } else if (input.offset && input.offset > 1) {
+              readInfo += `Read lines ${input.offset}-${input.offset + result.linesRead}.`;
             }
 
             if (result.wasLimited) {