docs: add instructions of how to set up external tools

README.md

@@ -28,11 +28,8 @@ $ pip install -e .
 ```
 
 ### 1.2 Usage
-If you use external tool APIs in your agents, you need to set up your API keys as follows:
-```bash
-export RAPID_API_KEY=""
-export WOLFRAM_ALPHA_APPID=""
-```
+If you use external tool APIs in your agents, you can follow instructions of setting up tools in [How to setup external tools](./tools.md). 
+
 You can also create .env file from the .env.example file, and then use dotenv to load the environment variables using .env file into your application's environment at runtime.
 
 ```bash

tools.md

@@ -0,0 +1,25 @@
+# Tool Configuration
+## Available tools
+
+### Wolfram Alpha
+1. Register wolfram alpha app account and activate [APP ID](https://developer.wolframalpha.com/access)  
+2. Setup Wolfram Alpha APP_ID
+```bash
+export WOLFRAM_ALPHA_APPID=<YOUR_APP_ID>
+```
+
+### Rapid API Tool
+1. Register for [Rapid API](https://rapidapi.com/hub)
+2. Click into the tool page that you want to call and click the (`Subscribe to Test`) button to activate tools.
+3. Setup up Rapid API Key
+```bash
+export RAPID_API_KEY=<YOUR_RAPID_API_KEY>
+```
+#### Current supported Rapid API tools
+- [Words API](https://rapidapi.com/dpventures/api/wordsapi/)
+- [Moon Phase](https://rapidapi.com/MoonAPIcom/api/moon-phase/)
+- [Trip Advisor](https://rapidapi.com/DataCrawler/api/tripadvisor16)
+- [Shazam](https://rapidapi.com/apidojo/api/shazam/)
+- [IMDB](https://rapidapi.com/rapihub-rapihub-default/api/imdb-top-100-movies/)
+
+