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2025-08-08 09:04:33 -04:00
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+# Tool Call Validation Fix Summary
+
+## Issue
+The error message "tool call validation failed: parameters for tool installPackage did not match schema" was occurring when the AI tried to install packages.
+
+## Root Cause
+The Groq models (including `moonshotai/kimi-k2-instruct`) do not support function/tool calling. This is a limitation of most Groq models - only specific models like `llama3-groq-70b-8192-tool-use-preview` support tools.
+
+## Solution
+Instead of using the Vercel AI SDK's tool calling feature, we switched to XML-based package detection:
+
+### 1. Removed Tool Support
+- Removed the `tool` import and `installPackage` tool definition
+- Removed the `tools` configuration from the `streamText` call
+
+### 2. Updated System Prompt
+Changed from:
+```
+Use the installPackage tool with parameters: {name: "package-name", reason: "why you need it"}
+```
+
+To:
+```
+You MUST specify packages using <package> tags BEFORE using them in your code. 
+For example: <package>three</package> or <package>@heroicons/react</package>
+```
+
+### 3. Implemented XML Tag Detection
+- Added streaming detection for `<package>` tags during response generation
+- Implemented buffering to handle tags split across chunks
+- Added support for both individual `<package>` tags and grouped `<packages>` tags
+
+### 4. Real-time Package Detection
+Packages are now detected in real-time as the AI generates the response:
+```javascript
+// Buffer incomplete tags across chunks
+const searchText = tagBuffer + text;
+const packageRegex = /<package>([^<]+)<\/package>/g;
+
+while ((packageMatch = packageRegex.exec(searchText)) !== null) {
+  const packageName = packageMatch[1].trim();
+  if (packageName && !packagesToInstall.includes(packageName)) {
+    packagesToInstall.push(packageName);
+    await sendProgress({ 
+      type: 'package', 
+      name: packageName,
+      message: `📦 Package detected: ${packageName}`
+    });
+  }
+}
+```
+
+## Results
+- ✅ Package detection now works reliably
+- ✅ Real-time UI feedback shows packages as they're detected
+- ✅ No more tool validation errors
+- ✅ Compatible with all Groq models
+
+## UI Feedback
+Users now see:
+```
+📦 Package detected: three
+📦 Package detected: @react-three/fiber
+📦 Package detected: @react-three/drei
+```
+
+As packages are detected in the AI's response, providing immediate feedback about dependencies that will be installed.