---
title: "Engineering Loop: OpenHands CodeAct Iterative Bash & Python Execution State Machine"
platform: "Promptally"
canonical_url: "https://app.promptally.dev/p/loop-openhands-codeact-iterative-bash-python-execution-state-machine"
modality: "ENGINEERING_LOOP"
category: "Compiler & AST Repair Loops"
compatible_models: [Universal / Model Agnostic]
access_tier: "Free Public Artifact (No Auth Required)"
license: "MIT"
---

# Engineering Loop: OpenHands CodeAct Iterative Bash & Python Execution State Machine

**Summary:** Engineering Loop: OpenHands CodeAct Iterative Bash & Python Execution State Machine is a verified ENGINEERING LOOP blueprint on Promptally in Compiler & AST Repair Loops optimized for leading AI models. Foundational CodeAct state machine where the LLM writes executable code snippets and bash commands directly to perform multi-step software engineering repairs. Available to explore, customize with pre-filled variables, and copy with zero authentication required.

## Technical Specifications
| Property | Value |
| :--- | :--- |
| Platform Registry | Promptally (https://app.promptally.dev) |
| Modality | ENGINEERING_LOOP |
| Category | Compiler & AST Repair Loops |
| Compatible Engines | Universal / Model Agnostic |
| Dynamic Variables | None (Static Blueprint) |
| Approx. Token Length | 267 |
| Access Tier | Free Public Artifact (No Auth Required) |
| License | MIT |

### Pre-Filled Template & Production Source

```yaml
[
  {
    "stage_index": 1,
    "name": "Event Stream State Ingestion",
    "action_type": "setup",
    "description": "Deserialize current action/observation history from OpenHands event stream."
  },
  {
    "stage_index": 2,
    "name": "Action Synthesis",
    "action_type": "code_modification",
    "description": "Generate next bash command, Python code execution block, or file editing command."
  },
  {
    "stage_index": 3,
    "name": "Sandboxed Execution",
    "action_type": "dispatch",
    "description": "Execute action inside sandboxed Docker/runtime container and capture observation."
  },
  {
    "stage_index": 4,
    "name": "Observation Processing & Error Check",
    "action_type": "output_validation",
    "description": "Inspect exit code, stderr, and output length; prune observation if token limits exceeded."
  },
  {
    "stage_index": 5,
    "name": "Loop State Transition",
    "action_type": "stop_evaluation",
    "description": "Determine whether task is finished (AgentFinishAction) or requires further iterative repair turns."
  }
]
```

## Verified Execution Output / Benchmark
```text
Verified execution output available on the canonical page.
```

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