harness
string
session_id
string
prompt
string
messages
list
tools
list
metadata
unknown
sent_at
string
num_user_messages
int64
num_tool_calls
int64
trace
list
file_path
string
claude_code
4ce973c2-f005-4e6a-bc3d-89834171b265
What's the weather like in Paris and London?
[ { "role": "user", "content": "What's the weather like in Paris and London?" }, { "role": "assistant", "content": "", "tool_calls": [ { "id": "toolu_0b1b0188296d4fb9bb55", "type": "function", "function": { "name": "get_weather", "arguments": {...
[ { "type": "function", "function": { "name": "Bash", "description": "Run a shell command.", "parameters": { "type": "object", "properties": { "command": { "type": "string" }, "description": { "type": "string" },...
{ "source_file": "traces.jsonl", "session_id": "c829c917-572b-4788-86f5-7d125f300cec", "trace_type": "claude-code", "model_provider": "anthropic", "model": "gpt-4o-mini-2024-07-18", "cwd": null, "cli_version": null, "turn_count": 3, "usage": { "input_tokens": 508, "output_tokens": 26 } }
2026-04-09T20:13:45.110Z
3
4
[ { "parentUuid": null, "promptId": "8f7bf89e-4c68-474a-bb35-da14c8052f5d", "type": "user", "message": { "role": "user", "content": "What's the weather like in Paris and London?" }, "uuid": "8f7bf89e-4c68-474a-bb35-da14c8052f5d", "timestamp": "2026-04-09T20:13:45.110Z", "is...
traces.jsonl