{"type":"session","version":3,"id":"01a10a05-2932-71ab-bdcf-58d0f29ff369","timestamp":"2026-10-05T03:04:32.818Z","cwd":"~/filbert-scratch/s0/runs/pi-4-hang/work"}
{"type":"agent_start"}
{"type":"turn_start"}
{"type":"message_start","message":{"role":"user","content":[{"type":"text","text":"probe"}],"timestamp":1791169472872}}
{"type":"message_end","message":{"role":"user","content":[{"type":"text","text":"probe"}],"timestamp":1791169472872}}
{"type":"message_start","message":{"role":"assistant","content":[{"type":"toolCall","id":"toolu_probe_1","name":"write","arguments":{},"partialJson":"","index":0}],"api":"anthropic-messages","provider":"probe","model":"probe-model","usage":{"input":10,"output":1,"cacheRead":0,"cacheWrite":0,"totalTokens":11,"cost":{"input":0,"output":0,"cacheRead":0,"cacheWrite":0,"total":0},"cacheWrite1h":0},"stopReason":"pending","timestamp":1791169472885,"responseId":"msg_probe_1791169472902"}}
{"type":"message_update","usage":{"input":10,"output":5,"cacheRead":0,"cacheWrite":0,"totalTokens":15,"cost":{"input":0,"output":0,"cacheRead":0,"cacheWrite":0,"total":0},"cacheWrite1h":0},"assistantMessageEvent":{"type":"toolcall_start","contentIndex":0,"id":"toolu_probe_1","toolName":"write"}}
{"type":"message_update","usage":{"input":10,"output":5,"cacheRead":0,"cacheWrite":0,"totalTokens":15,"cost":{"input":0,"output":0,"cacheRead":0,"cacheWrite":0,"total":0},"cacheWrite1h":0},"assistantMessageEvent":{"type":"toolcall_delta","contentIndex":0,"delta":"{\"path\":\"target.txt\",\"content\":\"probe\\n\"}"}}
{"type":"message_update","usage":{"input":10,"output":5,"cacheRead":0,"cacheWrite":0,"totalTokens":15,"cost":{"input":0,"output":0,"cacheRead":0,"cacheWrite":0,"total":0},"cacheWrite1h":0},"assistantMessageEvent":{"type":"toolcall_end","contentIndex":0,"toolCall":{"type":"toolCall","id":"toolu_probe_1","name":"write","arguments":{"path":"target.txt","content":"probe\n"}}}}
{"type":"message_end","message":{"role":"assistant","content":[{"type":"toolCall","id":"toolu_probe_1","name":"write","arguments":{"path":"target.txt","content":"probe\n"}}],"api":"anthropic-messages","provider":"probe","model":"probe-model","usage":{"input":10,"output":5,"cacheRead":0,"cacheWrite":0,"totalTokens":15,"cost":{"input":0,"output":0,"cacheRead":0,"cacheWrite":0,"total":0},"cacheWrite1h":0},"stopReason":"toolUse","timestamp":1791169472885,"responseId":"msg_probe_1791169472902","rawStopReason":"tool_use"}}
{"type":"tool_execution_start","toolCallId":"toolu_probe_1","toolName":"write","args":{"path":"target.txt","content":"probe\n"}}
