diff --git a/.changeset/add-mcp-debug-logging.md b/.changeset/add-mcp-debug-logging.md
new file mode 100644
index 00000000..b2479476
--- /dev/null
+++ b/.changeset/add-mcp-debug-logging.md
@@ -0,0 +1,6 @@
+---
+"@perstack/runtime": patch
+---
+
+Add debug logging for MCP skill startup time
+
diff --git a/assets/image-c3bc156b-e84b-43b8-ac80-4f97a44fcaee.png b/assets/image-c3bc156b-e84b-43b8-ac80-4f97a44fcaee.png
deleted file mode 100644
index e69de29b..00000000
diff --git a/packages/runtime/src/skill-manager/mcp.ts b/packages/runtime/src/skill-manager/mcp.ts
index 932f7c81..b18d6abb 100644
--- a/packages/runtime/src/skill-manager/mcp.ts
+++ b/packages/runtime/src/skill-manager/mcp.ts
@@ -72,9 +72,21 @@ export class McpSkillManager extends BaseSkillManager {
       }
       env[envName] = this._env[envName]
     }
+    const startTime = Date.now()
+    console.log(`[MCP] Starting skill ${skill.name}...`)
     const { command, args } = this._getCommandArgs(skill)
-    const transport = new StdioClientTransport({ command, args, env, stderr: "ignore" })
+    const transport = new StdioClientTransport({ command, args, env, stderr: "pipe" })
+    if (transport.stderr) {
+      transport.stderr.on("data", (chunk: Buffer) => {
+        console.log(`[MCP:${skill.name}:stderr] ${chunk.toString().trim()}`)
+      })
+    }
+    const connectStartTime = Date.now()
     await this._mcpClient!.connect(transport)
+    const connectTime = Date.now()
+    console.log(
+      `[MCP] Skill ${skill.name} connected in ${connectTime - connectStartTime}ms (total: ${connectTime - startTime}ms)`,
+    )
     if (this._eventListener) {
       const serverInfo = this._mcpClient!.getServerVersion()
       const event = createRuntimeEvent("skillConnected", this._runId, {