Python: GitHubCopilotAgent ignores tools added by ContextProvider.before_run (e.g. SkillsProvider.load_skill / read_skill_resource)

[RatnaRaj297]

Description

Versions

• agent-framework-github-copilot==1.0.0b260421
• agent-framework-core==1.2.1
• github-copilot-sdk==0.2.1
• Python 3.13

Problem

SkillsProvider.before_run registers load_skill / read_skill_resource
via context.extend_tools(...), but GitHubCopilotAgent._create_session
(and _resume_session) only forwards self._tools (the constructor
tools= argument) to CopilotClient.create_session. Tools contributed by
context providers are dropped.

Effect: the model sees the <available_skills> system prompt that tells it
to call load_skill, but load_skill isn't registered as a callable tool,
so calls fail with Skill not found.

Repro

from agent_framework import SkillsProvider
from agent_framework.github import GitHubCopilotAgent

skills = SkillsProvider(skill_paths="./skills")
agent = GitHubCopilotAgent(
    instructions="If asked, call load_skill with the requested skill name.",
    context_providers=[skills],
)

async with agent:
    print(await agent.run("Call load_skill with skill_name='<your-skill>'"))
    # -> model reports load_skill is unavailable / "Skill not found"

Current workaround

skills = SkillsProvider(skill_paths="./skills")
agent = GitHubCopilotAgent(
    ...,
    context_providers=[skills],
    tools=list(skills._tools),  # reaches into private state
)

Expectation

_create_session / _resume_session should merge constructor tools with
the tools added to SessionContext by before_run providers before
calling CopilotClient.create_session.

Code Sample

Error Messages / Stack Traces

Package Versions

agent-framework-github-copilot==1.0.0b260421, agent-framework-core==1.2.1, github-copilot-sdk==0.2.1

Python Version

Python 3.13

Additional Context

No response