COMPATIBILITY

HELM Compatibility Matrix

Tiers

Tier Requirements Badge
Compatible L1 pass 🟢 Compatible
Verified L1 + L2 + strict preflight + receipt binding 🔵 Verified
Sovereign Verified + L3 degraded-path adversarial 🟣 Sovereign

Current Matrix

Sandbox Providers

Provider Version Compatible Verified Sovereign Notes
Mock 1.0.0 Built-in, deterministic
OpenSandbox latest 🔲 Full preflight + receipt binding
E2B latest 🔲 Full preflight + receipt binding
Daytona latest 🔲 🔲 Basic integration

Orchestrator Adapters

Framework Language Compatible Verified Notes
OpenAI Agents SDK Python Full governance + EvidencePack
OpenAI Agents SDK TypeScript + Responses WS mode
MS Agent Framework Python RC adapter
MS Agent Framework .NET 🔲 Minimal example
LangChain Python Tool wrapper
Mastra TypeScript + sandbox provider selection

MCP Clients

Client Transport Compatible Notes
Claude Code stdio (plugin) Auto-start via .mcp.json
Claude Desktop stdio (.mcpb) Cross-platform binary bundle
Windsurf stdio / HTTP
Codex stdio codex mcp add
VS Code stdio .vscode/settings.json
Cursor stdio .cursor/mcp.json

CI

The compatibility matrix is generated weekly by .github/workflows/compatibility_matrix.yml.

# Run conformance locally
helm conform --level L2 --json

# Run sandbox conformance
helm sandbox conform --provider opensandbox --tier verified --json