Accessing GitHub

You can mount a GitHub repository to your session sandbox and connect to the GitHub MCP for making pull requests.

GitHub repositories are cached, so future sessions that use the same repository start faster.

GitHub MCP and session resources

First, create an agent that declares the GitHub MCP server. The agent definition holds the server URL but no authentication token:

ant apply code-reviewer.md

---
name: Code Reviewer
model: claude-opus-5
mcp_servers:
  - type: url
    name: github
    url: https://api.githubcopilot.com/mcp/
tools:
  - type: agent_toolset_20260401
  - type: mcp_toolset
    mcp_server_name: github
---

You are a code review assistant with access to GitHub.

Then create a session that mounts the GitHub repository:

session = client.beta.sessions.create(
    agent=agent.id,
    environment_id=environment.id,
    resources=[
        {
            "type": "github_repository",
            "url": "https://github.com/org/repo",
            "mount_path": "/workspace/repo",
            "authorization_token": "ghp_your_github_token",
        },
    ],
)