# Fixes Summary - November 20, 2025

## Overview

Fixed all broken examples in cnctd_ai after the migration to `rmcp::model::Tool`. All examples now compile and run correctly.

## Issues Fixed

### 1. Tool Calling Examples
- **Files**: `examples/tool_calling.rs`, `examples/tool_calling_streaming.rs`
- **Problem**: Examples were using old Tool struct with `String` fields instead of `Cow<'a, str>` and `Arc<Map<String, Value>>`
- **Solution**: 
  - Created helper functions `create_tool()` and `create_tool_borrowed()`
  - Updated examples to use helper functions
  - Simplified tool creation from manual Arc/Cow construction to clean function calls

### 2. Error Handling Example
- **File**: `examples/error_handling.rs`
- **Problem**: Malformed tool creation tests were broken due to Tool API changes
- **Solution**:
  - Updated tool creation to use proper `serde_json::Map` conversion
  - Fixed tool schema construction
  - Maintained all test scenarios (invalid API keys, models, schemas, etc.)

### 3. MCP Gateway Integration
- **File**: `examples/mcp_gateway.rs` (already working)
- **Enhancement**: Added new `examples/mcp_gateway_agent.rs` showing complete agent workflow
- **Features**:
  - Connects to MCP gateway
  - Fetches available tools
  - Uses Claude to decide which tools to call
  - Executes tools and returns results
  - Complete agentic workflow example

## New Features Added

### Helper Functions
- `create_tool(name, description, schema)` - For owned strings
- `create_tool_borrowed(name, description, schema)` - For static strings
- Location: `src/tool_helpers.rs`
- Exported from main library

### Documentation
- **README.md**: Comprehensive usage guide with examples
- **CHANGELOG.md**: Version history and changes
- **MIGRATION.md**: Detailed migration guide from old to new API
- **FIXES_SUMMARY.md**: This file

## Benefits

1. **Easier Tool Creation**: Helper functions eliminate boilerplate
2. **Better Examples**: All examples now demonstrate best practices
3. **Complete Documentation**: Full guide for new and existing users
4. **MCP Integration**: Shows how to build complete agents with MCP gateway
5. **Type Safety**: Proper use of Rust's type system with Cow and Arc

## Testing Status

✅ All examples compile successfully
✅ Tool creation works with both providers (Anthropic, OpenAI)
✅ MCP gateway integration functional
✅ Error handling comprehensive
✅ Streaming and non-streaming both work
✅ Tool calling workflow complete

## Files Modified

```
CHANGELOG.md                         (new)
FIXES_SUMMARY.md                     (new)
MIGRATION.md                         (new)
README.md                            (updated)
examples/error_handling.rs           (fixed)
examples/mcp_gateway_agent.rs        (new)
examples/tool_calling.rs             (fixed, simplified)
examples/tool_calling_streaming.rs   (fixed, simplified)
src/lib.rs                           (updated exports)
src/tool_helpers.rs                  (new)
```

## Migration Path for Users

### Old Way (Broken)
```rust
let tool = Tool {
    name: "my_tool".into(),
    description: "Does something".into(),
    input_schema: json!({"type": "object"}),
};
```

### New Way (Working)
```rust
use cnctd_ai::create_tool;

let tool = create_tool(
    "my_tool",
    "Does something",
    json!({"type": "object"})
)?;
```

## Next Steps

The library is now ready for:
1. Building complete AI agents
2. Integration with MCP gateway infrastructure
3. Multi-provider tool calling workflows
4. Production use with proper error handling

## Support

For issues or questions:
- Review the examples in `examples/`
- Check `MIGRATION.md` for migration guidance
- See `README.md` for API documentation
