Marwan Atef (@Marwan_3atef) highlights Speakeasy’s MIT coding-agent runtime Kit: the model sees one compose tool and can shell, edit, retry, and spin ACP subagents (Claude/Codex/Cursor) in a single round trip — about half the tokens of usual harnesses on size-matched tasks. No sandbox; run it inside a trusted boundary.

Key Takeaways

  • ✓Ship: MIT open-source speakeasy-api/kit coding-agent runtime.
  • ✓Mechanism: one compose tool for shell/edit/retry and ACP subagents in one round trip.
  • ✓Caveat: no sandbox; ~half tokens vs usual harnesses on size-matched tasks.
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Claude Code (Anthropic) · Cursor Composer (Agent Mode)
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