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82 lines
2.6 KiB
Python
82 lines
2.6 KiB
Python
#!/usr/bin/env python3
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"""
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Ralph loop: autonomous AI task loop with fresh context per iteration.
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Two modes:
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- "plan": reads PROMPT_plan.md, generates/updates IMPLEMENTATION_PLAN.md
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- "build": reads PROMPT_build.md, implements tasks, runs tests, commits
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Each iteration creates a fresh session so the agent always operates in
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the "smart zone" of its context window. State is shared between
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iterations via files on disk (IMPLEMENTATION_PLAN.md, AGENTS.md, specs/*).
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Usage:
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python ralph_loop.py # build mode, 50 iterations
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python ralph_loop.py plan # planning mode
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python ralph_loop.py 20 # build mode, 20 iterations
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python ralph_loop.py plan 5 # planning mode, 5 iterations
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"""
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import asyncio
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import sys
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from pathlib import Path
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from copilot import CopilotClient, MessageOptions, SessionConfig
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async def ralph_loop(mode: str = "build", max_iterations: int = 50):
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prompt_file = "PROMPT_plan.md" if mode == "plan" else "PROMPT_build.md"
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client = CopilotClient()
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await client.start()
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print("━" * 40)
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print(f"Mode: {mode}")
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print(f"Prompt: {prompt_file}")
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print(f"Max: {max_iterations} iterations")
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print("━" * 40)
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try:
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prompt = Path(prompt_file).read_text()
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for i in range(1, max_iterations + 1):
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print(f"\n=== Iteration {i}/{max_iterations} ===")
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session = await client.create_session(SessionConfig(
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model="gpt-5.1-codex-mini",
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# Pin the agent to the project directory
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working_directory=str(Path.cwd()),
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# Auto-approve tool calls for unattended operation
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on_permission_request=lambda _req, _ctx: {
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"kind": "approved",
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"rules": [],
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},
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))
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# Log tool usage for visibility
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def log_tool_event(event):
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if event.type.value == "tool.execution_start":
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print(f" ⚙ {event.data.tool_name}")
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session.on(log_tool_event)
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try:
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await session.send_and_wait(
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MessageOptions(prompt=prompt), timeout=600
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)
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finally:
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await session.destroy()
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print(f"\nIteration {i} complete.")
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print(f"\nReached max iterations: {max_iterations}")
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finally:
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await client.stop()
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if __name__ == "__main__":
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args = sys.argv[1:]
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mode = "plan" if "plan" in args else "build"
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max_iter = next((int(a) for a in args if a.isdigit()), 50)
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asyncio.run(ralph_loop(mode, max_iter))
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