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Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code:   StreamingRowsError
Exception:    CastError
Message:      Couldn't cast
schema_version: string
trajectory_id: string
session_id: string
agent: struct<name: string, extra: struct<task_id: string, tracejudge_task_id: string, domain: string, sour (... 55 chars omitted)
  child 0, name: string
  child 1, extra: struct<task_id: string, tracejudge_task_id: string, domain: string, source_dataset: string, benchmar (... 26 chars omitted)
      child 0, task_id: string
      child 1, tracejudge_task_id: string
      child 2, domain: string
      child 3, source_dataset: string
      child 4, benchmark: string
      child 5, resolved: bool
steps: list<item: struct<step_id: int64, timestamp: string, source: string, message: string, tool_calls: li (... 765 chars omitted)
  child 0, item: struct<step_id: int64, timestamp: string, source: string, message: string, tool_calls: list<item: st (... 753 chars omitted)
      child 0, step_id: int64
      child 1, timestamp: string
      child 2, source: string
      child 3, message: string
      child 4, tool_calls: list<item: struct<tool_call_id: string, function_name: string, arguments: struct<data_path: string,  (... 51 chars omitted)
          child 0, item: struct<tool_call_id: string, function_name: string, arguments: struct<data_path: string, info_type:  (... 39 chars omitted)
              child 0, tool_call_id: string
              child 1, function_name: string
              child 2, arguments: struct<data_path: string, info_type: string, keyterm: string, code: string>
                  child 0, data_path: 
...
d)
      child 0, node_id: string
      child 1, merged_state: struct<capability: string, intent: string, sub_intent: string, effect: string, target: string, repre (... 249 chars omitted)
          child 0, capability: string
          child 1, intent: string
          child 2, sub_intent: string
          child 3, effect: string
          child 4, target: string
          child 5, representative_input_signature: string
          child 6, member_refs: list<item: struct<trace_id: string, span_id: string, trajectory_position: int64, input_signature: st (... 32 chars omitted)
              child 0, item: struct<trace_id: string, span_id: string, trajectory_position: int64, input_signature: string, resul (... 20 chars omitted)
                  child 0, trace_id: string
                  child 1, span_id: string
                  child 2, trajectory_position: int64
                  child 3, input_signature: string
                  child 4, result_signature: string
          child 7, equivalence_tier: string
          child 8, confidence: double
          child 9, variant_count: int64
      child 2, support: int64
      child 3, pruned: bool
      child 4, intent_stage: string
prune_threshold: int64
num_trajectories: int64
task_id: string
edges: list<item: struct<from_node: string, to_node: string, weight: int64>>
  child 0, item: struct<from_node: string, to_node: string, weight: int64>
      child 0, from_node: string
      child 1, to_node: string
      child 2, weight: int64
to
{'task_id': Value('string'), 'num_trajectories': Value('int64'), 'prune_threshold': Value('int64'), 'nodes': List({'node_id': Value('string'), 'merged_state': {'capability': Value('string'), 'intent': Value('string'), 'sub_intent': Value('string'), 'effect': Value('string'), 'target': Value('string'), 'representative_input_signature': Value('string'), 'member_refs': List({'trace_id': Value('string'), 'span_id': Value('string'), 'trajectory_position': Value('int64'), 'input_signature': Value('string'), 'result_signature': Value('string')}), 'equivalence_tier': Value('string'), 'confidence': Value('float64'), 'variant_count': Value('int64')}, 'support': Value('int64'), 'pruned': Value('bool'), 'intent_stage': Value('string')}), 'edges': List({'from_node': Value('string'), 'to_node': Value('string'), 'weight': Value('int64')})}
because column names don't match
Traceback:    Traceback (most recent call last):
                File "/src/services/worker/src/worker/utils.py", line 149, in get_rows_or_raise
                  return get_rows(
                      dataset=dataset,
                  ...<4 lines>...
                      column_names=column_names,
                  )
                File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
                  return func(*args, **kwargs)
                File "/src/services/worker/src/worker/utils.py", line 129, in get_rows
                  rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
                File "/src/services/worker/src/worker/utils.py", line 489, in safe_iter
                  yield from ds.decode(False) if ds.features else ds
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2818, in __iter__
                  for key, example in ex_iterable:
                                      ^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2355, in __iter__
                  for key, pa_table in self._iter_arrow():
                                       ~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2380, in _iter_arrow
                  for key, pa_table in self.ex_iterable._iter_arrow():
                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
                  for key, pa_table in iterator:
                                       ^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
                  for key, pa_table in self.generate_tables_fn(**gen_kwags):
                                       ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
                  self._cast_table(pa_table, json_field_paths=json_field_paths),
                  ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
                  pa_table = table_cast(pa_table, self.info.features.arrow_schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2369, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
                  raise CastError(
                  ...<3 lines>...
                  )
              datasets.table.CastError: Couldn't cast
              schema_version: string
              trajectory_id: string
              session_id: string
              agent: struct<name: string, extra: struct<task_id: string, tracejudge_task_id: string, domain: string, sour (... 55 chars omitted)
                child 0, name: string
                child 1, extra: struct<task_id: string, tracejudge_task_id: string, domain: string, source_dataset: string, benchmar (... 26 chars omitted)
                    child 0, task_id: string
                    child 1, tracejudge_task_id: string
                    child 2, domain: string
                    child 3, source_dataset: string
                    child 4, benchmark: string
                    child 5, resolved: bool
              steps: list<item: struct<step_id: int64, timestamp: string, source: string, message: string, tool_calls: li (... 765 chars omitted)
                child 0, item: struct<step_id: int64, timestamp: string, source: string, message: string, tool_calls: list<item: st (... 753 chars omitted)
                    child 0, step_id: int64
                    child 1, timestamp: string
                    child 2, source: string
                    child 3, message: string
                    child 4, tool_calls: list<item: struct<tool_call_id: string, function_name: string, arguments: struct<data_path: string,  (... 51 chars omitted)
                        child 0, item: struct<tool_call_id: string, function_name: string, arguments: struct<data_path: string, info_type:  (... 39 chars omitted)
                            child 0, tool_call_id: string
                            child 1, function_name: string
                            child 2, arguments: struct<data_path: string, info_type: string, keyterm: string, code: string>
                                child 0, data_path: 
              ...
              d)
                    child 0, node_id: string
                    child 1, merged_state: struct<capability: string, intent: string, sub_intent: string, effect: string, target: string, repre (... 249 chars omitted)
                        child 0, capability: string
                        child 1, intent: string
                        child 2, sub_intent: string
                        child 3, effect: string
                        child 4, target: string
                        child 5, representative_input_signature: string
                        child 6, member_refs: list<item: struct<trace_id: string, span_id: string, trajectory_position: int64, input_signature: st (... 32 chars omitted)
                            child 0, item: struct<trace_id: string, span_id: string, trajectory_position: int64, input_signature: string, resul (... 20 chars omitted)
                                child 0, trace_id: string
                                child 1, span_id: string
                                child 2, trajectory_position: int64
                                child 3, input_signature: string
                                child 4, result_signature: string
                        child 7, equivalence_tier: string
                        child 8, confidence: double
                        child 9, variant_count: int64
                    child 2, support: int64
                    child 3, pruned: bool
                    child 4, intent_stage: string
              prune_threshold: int64
              num_trajectories: int64
              task_id: string
              edges: list<item: struct<from_node: string, to_node: string, weight: int64>>
                child 0, item: struct<from_node: string, to_node: string, weight: int64>
                    child 0, from_node: string
                    child 1, to_node: string
                    child 2, weight: int64
              to
              {'task_id': Value('string'), 'num_trajectories': Value('int64'), 'prune_threshold': Value('int64'), 'nodes': List({'node_id': Value('string'), 'merged_state': {'capability': Value('string'), 'intent': Value('string'), 'sub_intent': Value('string'), 'effect': Value('string'), 'target': Value('string'), 'representative_input_signature': Value('string'), 'member_refs': List({'trace_id': Value('string'), 'span_id': Value('string'), 'trajectory_position': Value('int64'), 'input_signature': Value('string'), 'result_signature': Value('string')}), 'equivalence_tier': Value('string'), 'confidence': Value('float64'), 'variant_count': Value('int64')}, 'support': Value('int64'), 'pruned': Value('bool'), 'intent_stage': Value('string')}), 'edges': List({'from_node': Value('string'), 'to_node': Value('string'), 'weight': Value('int64')})}
              because column names don't match

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TraceJudge community agent traces

Community-submitted agent execution traces, normalized to ATIF (Agent Trajectory Interchange Format, ATIF-v1.7 — Harbor Framework). Traces come from any agent with a supported adapter (Claude Code, Codex, OpenHands, OpenAI chat-messages) and are validated before upload — every file passes validate_atif() from TraceJudge.

Layout

traces/<agent>/<trajectory_id>.atif.json

One JSON file per trajectory: a flat list of user/agent/system steps with tool calls, observations, reasoning, and token metrics.

Submitting your own traces

git clone https://github.com/fleet-fellowship/TraceJudge && cd TraceJudge
uv venv --python 3.12 .venv && uv pip install --python .venv -e .
hf auth login   # your own HF account

# from a local Claude Code / Codex session
.venv/bin/python scripts/submit_trace.py --list-sessions
.venv/bin/python scripts/submit_trace.py --session 0 --push

# or from a raw trace file (any supported format)
.venv/bin/python scripts/submit_trace.py --trace my_trace.json --push

If you don't have write access, the upload automatically opens a Hub pull request. Traces can contain working directories, file contents, shell commands, and prompts — review before sharing.

Browsing

.venv/bin/python scripts/submit_trace.py --pull     # download everything
.venv/bin/python scripts/view_atif.py               # local web viewer
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