chore: Remove .windsurf from git tracking (already in .gitignore)
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---
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description: Create a new MCP tool for MT5-Quant with full build, install, and test cycle
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---
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# MCP Tool Development Workflow
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Complete workflow for adding a new MCP tool to MT5-Quant.
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## Step 1: Define Tool Schema
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Add the tool definition to `src/tools/definitions.rs`:
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1. Create a function `tool_<your_tool_name>()` that returns `serde_json::Value`
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2. Add the tool to the `get_tools_list()` vector
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3. Follow the JSON schema format:
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- `name`: Tool identifier (snake_case)
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- `description`: Clear purpose statement
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- `inputSchema`: JSON Schema with `required` and `properties`
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**Template:**
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```rust
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fn tool_<your_tool_name>() -> Value {
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json!({
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"name": "<tool_name>",
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"description": "<clear description of what it does>",
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"inputSchema": {
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"type": "object",
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"required": ["<param1>"],
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"properties": {
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"<param1>": { "type": "string", "description": "..." },
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"<param2>": { "type": "integer", "description": "..." }
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}
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}
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})
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}
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```
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## Step 2: Implement Handler
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Add the handler implementation in `src/tools/handlers.rs`:
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1. Add a match arm in `ToolHandler::handle()` dispatch
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2. Implement `handle_<your_tool_name>()` method
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3. Return `Result<Value>` with proper MCP response format:
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```rust
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async fn handle_<your_tool_name>(&self, args: &Value) -> Result<Value> {
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// Extract parameters
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let param = args.get("param").and_then(|v| v.as_str())
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.ok_or_else(|| anyhow::anyhow!("Missing required parameter: param"))?;
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// Implementation logic here
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let result = /* ... */;
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Ok(json!({
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"content": [{
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"type": "text",
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"text": json!({
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"success": true,
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"data": result
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}).to_string()
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}],
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"isError": false
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}))
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}
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```
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## Step 3: Build Release
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// turbo
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Run the release build script:
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```bash
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./scripts/build-release.sh
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```
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This creates `dist/mt5-quant-{platform}.tar.gz` with the binary and config.
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## Step 4: Install
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Extract and install the new binary:
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```bash
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tar -xzf dist/mt5-quant-*.tar.gz
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cp mt5-quant-*/mt5-quant ~/.cargo/bin/mt5-quant
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```
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Or install directly from cargo:
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```bash
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cargo install --path . --force
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```
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## Step 5: Test with MCP Request
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Test the tool using the MCP server. Start the server and send a request:
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```bash
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# Start the MCP server
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echo '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}' | mt5-quant
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# List tools to verify registration
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echo '{"jsonrpc":"2.0","id":2,"method":"tools/list","params":{}}' | mt5-quant
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# Call your new tool
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echo '{"jsonrpc":"2.0","id":3,"method":"tools/call","params":{"name":"<your_tool_name>","arguments":{"<param>":"value"}}}' | mt5-quant
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```
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**Expected output format:**
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```json
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{
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"jsonrpc": "2.0",
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"id": 3,
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"result": {
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"content": [{"type": "text", "text": "{\"success\":true,...}"}],
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"isError": false
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}
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}
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```
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## Example: Complete Tool Implementation
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**In `src/tools/definitions.rs`:**
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```rust
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fn tool_healthcheck() -> Value {
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json!({
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"name": "healthcheck",
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"description": "System health check with OS detection and configuration validation",
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"inputSchema": {
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"type": "object",
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"properties": {
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"detailed": { "type": "boolean", "description": "Include detailed system info" }
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}
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}
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})
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}
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```
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**Add to `get_tools_list()`:**
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```rust
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let tools = vec![
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// ... existing tools
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tool_healthcheck(), // Add here
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];
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```
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**In `src/tools/handlers.rs` - add match arm:**
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```rust
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"healthcheck" => self.handle_healthcheck(args).await,
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```
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**Add handler method with OS detection:**
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```rust
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async fn handle_healthcheck(&self, args: &Value) -> Result<Value> {
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let detailed = args.get("detailed").and_then(|v| v.as_bool()).unwrap_or(false);
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// OS Detection
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let platform = std::env::consts::OS;
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let arch = std::env::consts::ARCH;
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// Configuration validation
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let config_path = Config::writable_config_path();
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let config_exists = config_path.exists();
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let wine_found = self.config.wine_executable.as_ref()
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.map(|p| Path::new(p).exists())
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.unwrap_or(false);
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let mt5_dir_found = self.config.terminal_dir.as_ref()
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.map(|p| Path::new(p).is_dir())
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.unwrap_or(false);
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let healthy = config_exists && wine_found && mt5_dir_found;
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let mut response = json!({
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"success": true,
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"healthy": healthy,
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"timestamp": chrono::Utc::now().to_rfc3339(),
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"os": {
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"platform": platform,
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"arch": arch,
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},
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"configuration": {
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"config_exists": config_exists,
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"wine_found": wine_found,
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"mt5_dir_found": mt5_dir_found,
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},
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});
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if detailed {
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response["detailed"] = json!({
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"exe_path": std::env::current_exe()
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.map(|p| p.to_string_lossy().to_string())
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.unwrap_or_else(|_| "unknown".to_string()),
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});
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}
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Ok(json!({
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"content": [{ "type": "text", "text": response.to_string() }],
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"isError": false
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}))
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}
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```
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**Test the tool:**
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```bash
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# Basic healthcheck
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echo '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"healthcheck","arguments":{}}}' | mt5-quant
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# Detailed healthcheck with system info
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echo '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"healthcheck","arguments":{"detailed":true}}}' | mt5-quant
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```
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## Testing Checklist
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- [ ] Tool appears in `tools/list` output
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- [ ] Required parameters are validated
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- [ ] Error responses have `isError: true`
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- [ ] Success responses have `isError: false`
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- [ ] Output is valid JSON in the `text` field
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- [ ] Handler doesn't panic on invalid input
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