ServiceNow A2A CLI

A simple command-line interface to communicate with remotely with ServiceNoW AI agents using the A2A (Agent-to-Agent) protocol.

Features

• Direct A2A protocol communication with ServiceNow AI Agents running in a Glide instance.
• OAuth token refresh function for secure authentication
• Simple setup using UV package manager

Prerequisites

• Python 3.11 or higher
• UV package manager
• ServiceNow instance with A2A agent and OAuth configured
• OAuth credentials with a2aauthscope permission

Setup

1. Copy the example environment file:

   cp .env.example .env

2. Configure your credentials in .env:

   • A2A_CLIENT_BASE_URL: Your ServiceNow instance URL
   • A2A_CLIENT_AGENT_ID: The sys_id of your A2A agent
   • A2A_CLIENT_ID: OAuth client ID
   • A2A_CLIENT_SECRET: OAuth client secret
   • A2A_CLIENT_REFRESH_TOKEN: Long-lived refresh token

3. Install dependencies:

   uv sync

4. Run it:

• CLI loop: uv run python main.py

Output with a prompt like Categorize ITSM Incident INC0019104 (AI Agent sysid 900cf9f09f4f1210579fa9e9d90a1c4a) looks roughly like this:

Using existing auth token from A2A_CLIENT_AUTH_TOKEN...

Connecting to Categorize ITSM Incident Agent...
Connected to agent: Categorize ITSM incident AI agent
Description: Categorize ITSM incident AI agent assigns appropriate category and subcategory to an incident.

Type your question (e.g., 'Categorize ITSM Incident INC0019104')
Type 'quit' or 'exit' to end the session

You: Categorize ITSM Incident INC0019104

Agent: **Recommended incident (INC0019104) categorization details:**
- Category: Software (Reason: The incident is about being unable to log in to the rewards/benefits portal, which is a software/application access issue.)
- Subcategory: Not determined (Reason: None of the available subcategories—Email or Operating System—directly match the portal login issue.)
Task has been completed

Security Notes

• Never commit .env files - they contain secrets!
• The .gitignore file is configured to exclude .env files
• Use .env.example as a template (contains no real credentials)
• Refresh tokens are valid for 100 days; access tokens expire in 30 minutes

Future Testing with Push notifications

Use the A2A Inspector web-based tool instead, which supports push notifications via ngrok:

See TESTING_WITH_A2A_INSPECTOR.md for complete instructions.

Files in This Project

• main.py - Simple CLI (blocked by push notification requirement)
• .env.example - Template for environment variables (no secrets)
• .env - Your actual credentials (git-ignored)
• TESTING_WITH_A2A_INSPECTOR.md - How to use the web-based inspector

Contributing

When contributing, remember:

1. Never commit .env files
2. Use environment variables for all credentials
3. Test with .env.example to ensure it has all required fields
4. Update documentation if adding new environment variables