Statewright: Visual State Machine Guardrails for AI Agents — Local Models Jump 2/10 to 10/10 on SWE-bench Subset

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A Rust-based engine that constrains which tools an AI coding agent can access per workflow phase, instead of giving agents 40+ tools at once. Integrates via MCP with Claude Code, Codex, Cursor, and opencode. On a SWE-bench subset, two local models improved from 2/10 to 10/10 with constraints enabled. Engine is Apache 2.0.