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DimensionIronCurtainA secure runtime for autonomous AI agents, with policy from plain-English constitutions.GitHub MCP ServerGitHub's official MCP server for managing repos, issues, PRs, and workflows via natural language
FMRS52 / 100 · D76 / 100 · B
Reliability8 / 2013 / 20
Security and permissions5 / 2014 / 20
Maintenance15 / 2018 / 20
Documentation14 / 2017 / 20
Setup experience10 / 2014 / 20
Best for
  • Developers and users who need strict security policies for AI agents
  • Teams that want to define security boundaries in natural language without sacrificing autonomy
  • Security researchers running agents in untrusted environments
  • Teams that want an AI assistant to directly operate on GitHub repos and collaboration workflows
  • Users already in the GitHub Copilot ecosystem who want a zero-deployment remote option
Not for
  • Scenarios where no security policy is needed and the agent can run freely
  • Simple tasks requiring minimal permissions or no external dependencies
  • Users who want out-of-the-box functionality without understanding the security model
  • Scenarios where you don't want the assistant to have write access to repos (enable only read-only toolsets)
  • Environments with strict network isolation for private repos that can't reach the official remote endpoint
Required permissions
  • Requires access to filesystem, network, API keys, etc., for file and network operations
  • Requires Docker for Docker agent mode, providing strongest isolation
  • Requires an LLM API key (Anthropic, Google, or OpenAI)
  • A personal access token (PAT) or OAuth App token; effective scope depends on the token's own permissions
  • Enabling toolsets like actions/issues/pull_requests grants write access — request tokens on a least-privilege basis
Risks and side effects
  • Research prototype: APIs and configuration formats may change
  • Policy compilation may misinterpret intent; always review compiled rules
  • V8 isolate boundaries are not OS-level; a V8 zero-day could allow escape
  • In Docker mode, approved domains get raw passthrough tunnels without content inspection
  • Write toolsets (creating/merging PRs, triggering workflows) can cause accidental changes if the token is overscoped — try a read-only toolset first
  • In hosted mode, credentials travel via the Authorization header — make sure the client-to-api.githubcopilot.com connection is trusted
Supported clientsClaude Desktop, Claude Code, VS Code, Cursor, Windsurf, JetBrains IDEs, Zed, Amp
Tools015