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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
id: string
source: string
user_id: null
model: string
model_config: string
system_prompt: string
parent_session_id: string
started_at: double
ended_at: double
end_reason: string
message_count: int64
tool_call_count: int64
input_tokens: int64
output_tokens: int64
cache_read_tokens: int64
cache_write_tokens: int64
reasoning_tokens: int64
cwd: null
billing_provider: string
billing_base_url: string
billing_mode: null
estimated_cost_usd: double
actual_cost_usd: null
cost_status: string
cost_source: string
pricing_version: null
title: null
api_call_count: int64
handoff_state: null
handoff_platform: null
handoff_error: null
rewind_count: int64
last_active: double
messages: list<item: struct<id: int64, session_id: string, role: string, content: string, tool_call_id: string (... 420 chars omitted)
  child 0, item: struct<id: int64, session_id: string, role: string, content: string, tool_call_id: string, tool_call (... 408 chars omitted)
      child 0, id: int64
      child 1, session_id: string
      child 2, role: string
      child 3, content: string
      child 4, tool_call_id: string
      child 5, tool_calls: list<item: struct<id: string, call_id: string, response_item_id: string, type: string, function: str (... 38 chars omitted)
          child 0, item: struct<id: string, call_id: string, response_item_id: string, type: string, function: struct<name: s (... 26 chars omitted)
              child 0, id: string
              child 1, call_id: string
              child 2, response_item_id: string
              child 3, type: string
              child 4, function: struct<name: string, arguments: string>
                  child 0, name: string
                  child 1, arguments: string
      child 6, tool_name: string
      child 7, timestamp: double
      child 8, token_count: null
      child 9, finish_reason: string
      child 10, reasoning: string
      child 11, reasoning_content: string
      child 12, reasoning_details: null
      child 13, codex_reasoning_items: null
      child 14, codex_message_items: null
      child 15, platform_message_id: null
      child 16, observed: int64
      child 17, active: int64
to
{'id': Value('string'), 'source': Value('string'), 'user_id': Value('null'), 'model': Value('string'), 'model_config': Value('string'), 'system_prompt': Value('string'), 'parent_session_id': Value('string'), 'started_at': Value('float64'), 'ended_at': Value('float64'), 'end_reason': Value('string'), 'message_count': Value('int64'), 'tool_call_count': Value('int64'), 'input_tokens': Value('int64'), 'output_tokens': Value('int64'), 'cache_read_tokens': Value('int64'), 'cache_write_tokens': Value('int64'), 'reasoning_tokens': Value('int64'), 'billing_provider': Value('string'), 'billing_base_url': Value('string'), 'billing_mode': Value('null'), 'estimated_cost_usd': Value('float64'), 'actual_cost_usd': Value('null'), 'cost_status': Value('string'), 'cost_source': Value('string'), 'pricing_version': Value('null'), 'title': Value('null'), 'api_call_count': Value('int64'), 'handoff_state': Value('null'), 'handoff_platform': Value('null'), 'handoff_error': Value('null'), 'last_active': Value('float64'), 'messages': List({'id': Value('int64'), 'session_id': Value('string'), 'role': Value('string'), 'content': Value('string'), 'tool_call_id': Value('string'), 'tool_calls': List({'id': Value('string'), 'call_id': Value('string'), 'response_item_id': Value('string'), 'type': Value('string'), 'function': {'name': Value('string'), 'arguments': Value('string')}}), 'tool_name': Value('string'), 'timestamp': Value('float64'), 'token_count': Value('null'), 'finish_reason': Value('string'), 'reasoning': Value('string'), 'reasoning_content': Value('string'), 'reasoning_details': Value('null'), 'codex_reasoning_items': Value('null'), 'codex_message_items': Value('null'), 'platform_message_id': Value('null'), 'observed': Value('int64')})}
because column names don't match
Traceback:    Traceback (most recent call last):
                File "/src/services/worker/src/worker/utils.py", line 99, in get_rows_or_raise
                  return get_rows(
                         ^^^^^^^^^
                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 77, in get_rows
                  rows_plus_one = list(itertools.islice(ds, rows_max_number + 1))
                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/iterable_dataset.py", line 2815, in __iter__
                  for key, example in ex_iterable:
                                      ^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/iterable_dataset.py", line 2352, in __iter__
                  for key, pa_table in self._iter_arrow():
                                       ^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/iterable_dataset.py", line 2377, in _iter_arrow
                  for key, pa_table in self.ex_iterable._iter_arrow():
                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
                  for key, pa_table in iterator:
                                       ^^^^^^^^
                File "/usr/local/lib/python3.12/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/python3.12/site-packages/datasets/packaged_modules/json/json.py", line 310, in _generate_tables
                  self._cast_table(pa_table, json_field_paths=json_field_paths),
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/packaged_modules/json/json.py", line 130, in _cast_table
                  pa_table = table_cast(pa_table, self.info.features.arrow_schema)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/table.py", line 2369, in table_cast
                  return cast_table_to_schema(table, schema)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
                  raise CastError(
              datasets.table.CastError: Couldn't cast
              id: string
              source: string
              user_id: null
              model: string
              model_config: string
              system_prompt: string
              parent_session_id: string
              started_at: double
              ended_at: double
              end_reason: string
              message_count: int64
              tool_call_count: int64
              input_tokens: int64
              output_tokens: int64
              cache_read_tokens: int64
              cache_write_tokens: int64
              reasoning_tokens: int64
              cwd: null
              billing_provider: string
              billing_base_url: string
              billing_mode: null
              estimated_cost_usd: double
              actual_cost_usd: null
              cost_status: string
              cost_source: string
              pricing_version: null
              title: null
              api_call_count: int64
              handoff_state: null
              handoff_platform: null
              handoff_error: null
              rewind_count: int64
              last_active: double
              messages: list<item: struct<id: int64, session_id: string, role: string, content: string, tool_call_id: string (... 420 chars omitted)
                child 0, item: struct<id: int64, session_id: string, role: string, content: string, tool_call_id: string, tool_call (... 408 chars omitted)
                    child 0, id: int64
                    child 1, session_id: string
                    child 2, role: string
                    child 3, content: string
                    child 4, tool_call_id: string
                    child 5, tool_calls: list<item: struct<id: string, call_id: string, response_item_id: string, type: string, function: str (... 38 chars omitted)
                        child 0, item: struct<id: string, call_id: string, response_item_id: string, type: string, function: struct<name: s (... 26 chars omitted)
                            child 0, id: string
                            child 1, call_id: string
                            child 2, response_item_id: string
                            child 3, type: string
                            child 4, function: struct<name: string, arguments: string>
                                child 0, name: string
                                child 1, arguments: string
                    child 6, tool_name: string
                    child 7, timestamp: double
                    child 8, token_count: null
                    child 9, finish_reason: string
                    child 10, reasoning: string
                    child 11, reasoning_content: string
                    child 12, reasoning_details: null
                    child 13, codex_reasoning_items: null
                    child 14, codex_message_items: null
                    child 15, platform_message_id: null
                    child 16, observed: int64
                    child 17, active: int64
              to
              {'id': Value('string'), 'source': Value('string'), 'user_id': Value('null'), 'model': Value('string'), 'model_config': Value('string'), 'system_prompt': Value('string'), 'parent_session_id': Value('string'), 'started_at': Value('float64'), 'ended_at': Value('float64'), 'end_reason': Value('string'), 'message_count': Value('int64'), 'tool_call_count': Value('int64'), 'input_tokens': Value('int64'), 'output_tokens': Value('int64'), 'cache_read_tokens': Value('int64'), 'cache_write_tokens': Value('int64'), 'reasoning_tokens': Value('int64'), 'billing_provider': Value('string'), 'billing_base_url': Value('string'), 'billing_mode': Value('null'), 'estimated_cost_usd': Value('float64'), 'actual_cost_usd': Value('null'), 'cost_status': Value('string'), 'cost_source': Value('string'), 'pricing_version': Value('null'), 'title': Value('null'), 'api_call_count': Value('int64'), 'handoff_state': Value('null'), 'handoff_platform': Value('null'), 'handoff_error': Value('null'), 'last_active': Value('float64'), 'messages': List({'id': Value('int64'), 'session_id': Value('string'), 'role': Value('string'), 'content': Value('string'), 'tool_call_id': Value('string'), 'tool_calls': List({'id': Value('string'), 'call_id': Value('string'), 'response_item_id': Value('string'), 'type': Value('string'), 'function': {'name': Value('string'), 'arguments': Value('string')}}), 'tool_name': Value('string'), 'timestamp': Value('float64'), 'token_count': Value('null'), 'finish_reason': Value('string'), 'reasoning': Value('string'), 'reasoning_content': Value('string'), 'reasoning_details': Value('null'), 'codex_reasoning_items': Value('null'), 'codex_message_items': Value('null'), 'platform_message_id': Value('null'), 'observed': Value('int64')})}
              because column names don't match

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dacorvo/transformers-coding-session-hermes-traces

hermes coding-agent session traces produced by agentcap runs. Each run contributes one folder under data/<run_id>/; inside, one file per session in hermes's native export format.

The on-the-wire HTTP captures for these same runs live in dacorvo/transformers-coding-session-captures. Both belong to the transformers-coding-session Collection — join on run_id to align captures with traces.

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