docs: add export workflows documentation to README

- Document "Export as Service" feature in main README
- Explain WORKSPACE_DIR for local file operations
- Document MCP filesystem tool support
- List supported features and security measures

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: aadamsx

README.md

@@ -262,6 +262,56 @@ If ports 3000, 3002, or 5432 are in use, configure alternatives:
 NEXT_PUBLIC_APP_URL=http://localhost:3100 POSTGRES_PORT=5433 docker compose up -d
 ```
 
+## Export Workflows as Standalone Services
+
+Export any workflow as a self-contained Python/FastAPI service that can be deployed independently.
+
+### Quick Start
+
+1. Right-click a workflow in the sidebar
+2. Select **"Export as Service"**
+3. Extract the ZIP file
+4. Configure `.env` with your API keys
+5. Run with Docker or directly:
+
+```bash
+# With Docker
+docker compose up -d
+
+# Or directly
+pip install -r requirements.txt
+uvicorn main:app --port 8080
+```
+
+### File Operations
+
+Exported services support two modes for agent file operations:
+
+#### Local File Tools (Recommended for Simple Use Cases)
+
+Set `WORKSPACE_DIR` in `.env` to enable sandboxed local file operations:
+
+```bash
+WORKSPACE_DIR=./workspace
+```
+
+Agents automatically get `local_write_file`, `local_read_file`, and `local_list_directory` tools. All paths are sandboxed—agents cannot access files outside the workspace.
+
+With Docker, files appear in `./output/` on your host machine.
+
+#### MCP Filesystem Tools
+
+If your workflow uses MCP filesystem servers, those continue to work as configured. MCP servers handle file operations on their own systems.
+
+You can use both options together—the LLM chooses the appropriate tool based on context.
+
+### Supported Features
+
+- **Multi-provider LLM support**: Anthropic (Claude), OpenAI (GPT), Google (Gemini)
+- **All block types**: Agent, Function, Condition, Router, API, Loop, Variables, Response
+- **MCP tools**: Full support via official Python SDK
+- **Security**: No eval(), no shell=True, sandboxed file operations
+
 ## Tech Stack
 
 - **Framework**: [Next.js](https://nextjs.org/) (App Router)