feat(api): integrate MCP tools support in Ollama chat route

Add support for Model Context Protocol (MCP) tools in the Ollama chat API. Detect model capabilities to use native tools or prompt engineering. Handle tool calls, execute them via MCPExecutor, and inject results back into the conversation for seamless tool-assisted responses. This enhances chat functionality by enabling external tool integration.

app/api/mcp/available-for-chat/route.ts

@@ -0,0 +1,58 @@
+/**
+ * API endpoint para listar MCPs disponíveis para uso no chat
+ */
+
+import { NextResponse } from "next/server";
+import { MCPRepository } from "@/database/repositories/mcp";
+import { MCPExecutor } from "@/lib/services/mcp-executor";
+import type { MCPTool } from "@/lib/types/mcp-chat";
+
+export const dynamic = "force-dynamic";
+
+export async function GET() {
+  try {
+    // Buscar todos os MCPs instalados com status "ready"
+    const allMcps = MCPRepository.getAllInstalled();
+
+    const availableMcps = allMcps
+      .filter((mcp: any) => mcp.status === "ready")
+      .map((mcp: any) => {
+        const tools = MCPExecutor.getAvailableTools(mcp.id);
+
+        // Converter tools para formato OpenAI function calling
+        const toolsFormatted = tools.map((tool: MCPTool) => ({
+          type: "function" as const,
+          function: {
+            name: `${mcp.id}__${tool.name}`, // Prefixar com mcpId para evitar conflitos
+            description: tool.description,
+            parameters: tool.inputSchema,
+          },
+        }));
+
+        return {
+          mcpId: mcp.id,
+          name: mcp.name,
+          owner: mcp.owner,
+          repo: mcp.repo,
+          toolCount: tools.length,
+          tools: toolsFormatted,
+          rawTools: tools, // Tools originais para referência
+        };
+      });
+
+    return NextResponse.json({
+      success: true,
+      mcps: availableMcps,
+      count: availableMcps.length,
+    });
+  } catch (error: any) {
+    console.error("Error listing available MCPs:", error);
+    return NextResponse.json(
+      {
+        success: false,
+        error: error.message || "Failed to list available MCPs",
+      },
+      { status: 500 }
+    );
+  }
+}

app/api/mcp/execute-tool/route.ts

@@ -0,0 +1,89 @@
+/**
+ * API endpoint para executar um tool de MCP
+ */
+
+import { NextRequest, NextResponse } from "next/server";
+import { MCPExecutor } from "@/lib/services/mcp-executor";
+
+export const dynamic = "force-dynamic";
+
+export async function POST(request: NextRequest) {
+  try {
+    const body = await request.json();
+    const { mcpId, toolName, parameters } = body;
+
+    // Validar parâmetros
+    if (!mcpId || !toolName) {
+      return NextResponse.json(
+        {
+          success: false,
+          error: "Missing mcpId or toolName",
+        },
+        { status: 400 }
+      );
+    }
+
+    console.log(`📞 API call to execute tool: ${mcpId}.${toolName}`);
+
+    // Obter tools disponíveis
+    const availableTools = MCPExecutor.getAvailableTools(mcpId);
+    const tool = availableTools.find((t) => t.name === toolName);
+
+    if (!tool) {
+      return NextResponse.json(
+        {
+          success: false,
+          error: `Tool ${toolName} not found in MCP ${mcpId}`,
+        },
+        { status: 404 }
+      );
+    }
+
+    // Validar parâmetros contra schema
+    const validation = MCPExecutor.validateParameters(parameters || {}, tool);
+    if (!validation.valid) {
+      return NextResponse.json(
+        {
+          success: false,
+          error: `Invalid parameters: ${validation.error}`,
+        },
+        { status: 400 }
+      );
+    }
+
+    // Executar tool
+    const result = await MCPExecutor.executeMCPTool(
+      mcpId,
+      toolName,
+      parameters || {}
+    );
+
+    if (!result.success) {
+      return NextResponse.json(
+        {
+          success: false,
+          error: result.error,
+          executionTime: result.executionTime,
+        },
+        { status: 500 }
+      );
+    }
+
+    return NextResponse.json({
+      success: true,
+      mcpId,
+      toolName,
+      result: result.result,
+      executionTime: result.executionTime,
+    });
+  } catch (error: any) {
+    console.error("Error executing MCP tool:", error);
+    return NextResponse.json(
+      {
+        success: false,
+        error: error.message || "Failed to execute MCP tool",
+      },
+      { status: 500 }
+    );
+  }
+}