Files
Giles Odigwe 45c515b8a7 Python: fix CopilotStudioAgent LineTooLong on large activities (#7417)
* Python: fix CopilotStudioAgent LineTooLong on large activities

Bump microsoft-agents-copilotstudio-client to >=1.2.0,<2 and forward a configurable read_bufsize (default 1 MiB) to the underlying aiohttp ClientSession via ConnectionSettings.client_session_settings. Copilot Studio streams each activity as a single SSE data line, so activities larger than aiohttp's 512 KB per-line limit previously raised aiohttp.http_exceptions.LineTooLong. Adds a client_session_settings parameter to CopilotStudioAgent and unit tests covering the default, override, and partial-settings cases.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 2766dc09-ab5f-4adc-8627-98361d7ccef0

* Python: apply read_bufsize default to supplied CopilotStudio settings

Address review feedback on the LineTooLong fix: when a user supplies their own ConnectionSettings but no client, inject the read_bufsize default so activities larger than aiohttp's 512 KB per-line limit still stream. Document configuring read_bufsize on the explicit pre-built-client path in the package and sample READMEs and the explicit-settings sample. Add unit tests covering the supplied-settings path.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 2766dc09-ab5f-4adc-8627-98361d7ccef0

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 2766dc09-ab5f-4adc-8627-98361d7ccef0
2026-08-07 03:08:06 +00:00
..

Copilot Studio Agent Examples

This folder contains examples demonstrating how to create and use agents with Microsoft Copilot Studio using the Agent Framework.

Prerequisites

Before running these examples, you need:

  1. Copilot Studio Environment: Access to a Microsoft Copilot Studio environment with a published copilot
  2. App Registration: An Azure AD App Registration with appropriate permissions
  3. Environment Variables: Set the following environment variables:
    • COPILOTSTUDIOAGENT__ENVIRONMENTID - Your Copilot Studio environment ID
    • COPILOTSTUDIOAGENT__SCHEMANAME - Your copilot's agent identifier/schema name
    • COPILOTSTUDIOAGENT__AGENTAPPID - Your App Registration client ID
    • COPILOTSTUDIOAGENT__TENANTID - Your Azure AD tenant ID

Examples

Example Description
copilotstudio_basic.py Basic non-streaming and streaming execution with simple questions
copilotstudio_with_explicit_settings.py Example with explicit settings and manual token acquisition

Authentication

The examples use MSAL (Microsoft Authentication Library) for authentication. The first time you run an example, you may need to complete an interactive authentication flow in your browser.

App Registration Setup

Your Azure AD App Registration should have:

  1. API Permissions:

  2. Redirect URIs:

    • For public client flows: http://localhost
    • Configure as appropriate for your authentication method
  3. Authentication:

    • Enable "Allow public client flows" if using interactive authentication

Usage Patterns

Basic Usage with Environment Variables

import asyncio
from agent_framework.microsoft import CopilotStudioAgent

# Uses environment variables for configuration
async def main():
    # Create agent using environment variables
    agent = CopilotStudioAgent()

    # Run a simple query
    result = await agent.run("What is the capital of France?")
    print(result)

asyncio.run(main())

Explicit Configuration

from agent_framework.microsoft import CopilotStudioAgent, acquire_token
from microsoft_agents.copilotstudio.client import ConnectionSettings, CopilotClient, PowerPlatformCloud, AgentType

# Acquire token manually
token = acquire_token(
    client_id="your-client-id",
    tenant_id="your-tenant-id"
)

# Create settings and client
settings = ConnectionSettings(
    environment_id="your-environment-id",
    agent_identifier="your-agent-schema-name",
    cloud=PowerPlatformCloud.PROD,
    copilot_agent_type=AgentType.PUBLISHED,
    custom_power_platform_cloud=None,
    # Raise aiohttp's per-line buffer above the 512 KB default so large Copilot Studio
    # activities (for example, sizeable connector payloads) don't raise LineTooLong.
    client_session_settings={"read_bufsize": 1024 * 1024},
)

client = CopilotClient(settings=settings, token=token)
agent = CopilotStudioAgent(client=client)

Troubleshooting

Common Issues

  1. Authentication Errors:

    • Verify your App Registration has correct permissions
    • Ensure environment variables are set correctly
    • Check that your tenant ID and client ID are valid
  2. Environment/Agent Not Found:

    • Verify your environment ID is correct
    • Ensure your copilot is published and the schema name is correct
    • Check that you have access to the specified environment
  3. Token Acquisition Failures:

    • Interactive authentication may require browser access
    • Corporate firewalls may block authentication flows
    • Try running with appropriate proxy settings if needed