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The dataset generation failed
Error code:   DatasetGenerationError
Exception:    TypeError
Message:      Couldn't cast array of type struct<graded: bool> to null
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1827, in _prepare_split_single
                  for key, table in generator:
                                    ^^^^^^^^^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 613, in wrapped
                  for item in generator(*args, **kwargs):
                              ~~~~~~~~~^^^^^^^^^^^^^^^^^
                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 2378, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2312, in cast_table_to_schema
                  cast_array_to_feature(
                  ~~~~~~~~~~~~~~~~~~~~~^
                      table[name] if name in table_column_names else pa.array([None] * len(table), type=schema.field(name).type),
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                      feature,
                      ^^^^^^^^
                  )
                  ^
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 1861, in wrapper
                  return pa.chunked_array([func(chunk, *args, **kwargs) for chunk in array.chunks])
                                           ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2068, in cast_array_to_feature
                  _c(array.field(name) if name in array_fields else null_array, subfeature)
                  ~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 1863, in wrapper
                  return func(array, *args, **kwargs)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2068, in cast_array_to_feature
                  _c(array.field(name) if name in array_fields else null_array, subfeature)
                  ~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 1863, in wrapper
                  return func(array, *args, **kwargs)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2152, in cast_array_to_feature
                  return array_cast(
                      array,
                  ...<2 lines>...
                      allow_decimal_to_str=allow_decimal_to_str,
                  )
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 1863, in wrapper
                  return func(array, *args, **kwargs)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2016, in array_cast
                  raise TypeError(f"Couldn't cast array of type {_short_str(array.type)} to {_short_str(pa_type)}")
              TypeError: Couldn't cast array of type struct<graded: bool> to null
              
              The above exception was the direct cause of the following exception:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1369, in compute_config_parquet_and_info_response
                  parquet_operations, partial, estimated_dataset_info = stream_convert_to_parquet(
                                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~^
                      builder, max_dataset_size_bytes=max_dataset_size_bytes
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  )
                  ^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 948, in stream_convert_to_parquet
                  builder._prepare_split(split_generator=splits_generators[split], file_format="parquet")
                  ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1694, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                                               ~~~~~~~~~~~~~~~~~~~~~~~~~~^
                      gen_kwargs=gen_kwargs, job_id=job_id, **_prepare_split_args
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  ):
                  ^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1879, in _prepare_split_single
                  raise DatasetGenerationError("An error occurred while generating the dataset") from e
              datasets.exceptions.DatasetGenerationError: An error occurred while generating the dataset

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source
dict
extra
dict
category
string
conversations
list
tools
list
{ "provider": null, "name": "agent-tracer", "split": "train", "subset": "toolcall", "synthetic": { "synth": true, "model": "moonshotai/Kimi-K3", "effort": null, "ground_truth": "reference", "system_prompt": "You are an AI agent that will be given a specific task. You are to complete that t...
{ "task": "toolcall_config_migrate_001", "sample_idx": 0, "attempt": 1, "steps": 4, "usage": { "prompt_tokens": 19373, "completion_tokens": 567, "total_tokens": 19940 }, "missing_tools": [], "error": null, "duration_s": 45.03, "evaluation": { "correct": true, "score": 1, "det...
agent
[ { "role": "system", "content": "You are an AI agent that will be given a specific task. You are to complete that task using the tools provided in 128 steps. You will need to call a finish tool as your last step, where you will pass your finish reason and any required final fields for that tool.\n You are no...
[ { "type": "function", "function": { "name": "code_exec", "description": "Execute a shell command in the execution environment. Returns exit code, stdout, and stderr as XML.", "parameters": { "description": "Shell command to execute in the execution environment.", "propertie...
{ "provider": null, "name": "agent-tracer", "split": "train", "subset": "toolcall", "synthetic": { "synth": true, "model": "moonshotai/Kimi-K3", "effort": null, "ground_truth": "reference", "system_prompt": "You are an AI agent that will be given a specific task. You are to complete that t...
{ "task": "toolcall_config_migrate_002", "sample_idx": 2, "attempt": 1, "steps": 3, "usage": { "prompt_tokens": 14065, "completion_tokens": 356, "total_tokens": 14421 }, "missing_tools": [], "error": null, "duration_s": 30.25, "evaluation": { "correct": true, "score": 1, "det...
agent
[ { "role": "system", "content": "You are an AI agent that will be given a specific task. You are to complete that task using the tools provided in 128 steps. You will need to call a finish tool as your last step, where you will pass your finish reason and any required final fields for that tool.\n You are no...
[ { "type": "function", "function": { "name": "code_exec", "description": "Execute a shell command in the execution environment. Returns exit code, stdout, and stderr as XML.", "parameters": { "description": "Shell command to execute in the execution environment.", "propertie...
{ "provider": null, "name": "agent-tracer", "split": "train", "subset": "toolcall", "synthetic": { "synth": true, "model": "moonshotai/Kimi-K3", "effort": null, "ground_truth": "reference", "system_prompt": "You are an AI agent that will be given a specific task. You are to complete that t...
{ "task": "toolcall_config_migrate_003", "sample_idx": 0, "attempt": 1, "steps": 4, "usage": { "prompt_tokens": 19194, "completion_tokens": 444, "total_tokens": 19638 }, "missing_tools": [], "error": null, "duration_s": 33.9, "evaluation": { "correct": true, "score": 1, "deta...
agent
[ { "role": "system", "content": "You are an AI agent that will be given a specific task. You are to complete that task using the tools provided in 128 steps. You will need to call a finish tool as your last step, where you will pass your finish reason and any required final fields for that tool.\n You are no...
[ { "type": "function", "function": { "name": "code_exec", "description": "Execute a shell command in the execution environment. Returns exit code, stdout, and stderr as XML.", "parameters": { "description": "Shell command to execute in the execution environment.", "propertie...
{ "provider": null, "name": "agent-tracer", "split": "train", "subset": "toolcall", "synthetic": { "synth": true, "model": "moonshotai/Kimi-K3", "effort": null, "ground_truth": "reference", "system_prompt": "You are an AI agent that will be given a specific task. You are to complete that t...
{ "task": "toolcall_config_migrate_004", "sample_idx": 1, "attempt": 1, "steps": 3, "usage": { "prompt_tokens": 14253, "completion_tokens": 501, "total_tokens": 14754 }, "missing_tools": [], "error": null, "duration_s": 37.83, "evaluation": { "correct": true, "score": 1, "det...
agent
[ { "role": "system", "content": "You are an AI agent that will be given a specific task. You are to complete that task using the tools provided in 128 steps. You will need to call a finish tool as your last step, where you will pass your finish reason and any required final fields for that tool.\n You are no...
[ { "type": "function", "function": { "name": "code_exec", "description": "Execute a shell command in the execution environment. Returns exit code, stdout, and stderr as XML.", "parameters": { "description": "Shell command to execute in the execution environment.", "propertie...
{ "provider": null, "name": "agent-tracer", "split": "train", "subset": "toolcall", "synthetic": { "synth": true, "model": "moonshotai/Kimi-K3", "effort": null, "ground_truth": "reference", "system_prompt": "You are an AI agent that will be given a specific task. You are to complete that t...
{ "task": "toolcall_config_migrate_005", "sample_idx": 0, "attempt": 1, "steps": 3, "usage": { "prompt_tokens": 14084, "completion_tokens": 375, "total_tokens": 14459 }, "missing_tools": [], "error": null, "duration_s": 31.19, "evaluation": { "correct": true, "score": 1, "det...
agent
[ { "role": "system", "content": "You are an AI agent that will be given a specific task. You are to complete that task using the tools provided in 128 steps. You will need to call a finish tool as your last step, where you will pass your finish reason and any required final fields for that tool.\n You are no...
[ { "type": "function", "function": { "name": "code_exec", "description": "Execute a shell command in the execution environment. Returns exit code, stdout, and stderr as XML.", "parameters": { "description": "Shell command to execute in the execution environment.", "propertie...
{ "provider": null, "name": "agent-tracer", "split": "train", "subset": "toolcall", "synthetic": { "synth": true, "model": "moonshotai/Kimi-K3", "effort": null, "ground_truth": "reference", "system_prompt": "You are an AI agent that will be given a specific task. You are to complete that t...
{ "task": "toolcall_config_migrate_006", "sample_idx": 3, "attempt": 1, "steps": 4, "usage": { "prompt_tokens": 19217, "completion_tokens": 474, "total_tokens": 19691 }, "missing_tools": [], "error": null, "duration_s": 37.28, "evaluation": { "correct": true, "score": 1, "det...
agent
[ { "role": "system", "content": "You are an AI agent that will be given a specific task. You are to complete that task using the tools provided in 128 steps. You will need to call a finish tool as your last step, where you will pass your finish reason and any required final fields for that tool.\n You are no...
[ { "type": "function", "function": { "name": "code_exec", "description": "Execute a shell command in the execution environment. Returns exit code, stdout, and stderr as XML.", "parameters": { "description": "Shell command to execute in the execution environment.", "propertie...
{ "provider": null, "name": "agent-tracer", "split": "train", "subset": "toolcall", "synthetic": { "synth": true, "model": "moonshotai/Kimi-K3", "effort": null, "ground_truth": "reference", "system_prompt": "You are an AI agent that will be given a specific task. You are to complete that t...
{ "task": "toolcall_config_migrate_007", "sample_idx": 1, "attempt": 1, "steps": 4, "usage": { "prompt_tokens": 19354, "completion_tokens": 547, "total_tokens": 19901 }, "missing_tools": [], "error": null, "duration_s": 39.61, "evaluation": { "correct": true, "score": 1, "det...
agent
[ { "role": "system", "content": "You are an AI agent that will be given a specific task. You are to complete that task using the tools provided in 128 steps. You will need to call a finish tool as your last step, where you will pass your finish reason and any required final fields for that tool.\n You are no...
[ { "type": "function", "function": { "name": "code_exec", "description": "Execute a shell command in the execution environment. Returns exit code, stdout, and stderr as XML.", "parameters": { "description": "Shell command to execute in the execution environment.", "propertie...
{ "provider": null, "name": "agent-tracer", "split": "train", "subset": "toolcall", "synthetic": { "synth": true, "model": "moonshotai/Kimi-K3", "effort": null, "ground_truth": "reference", "system_prompt": "You are an AI agent that will be given a specific task. You are to complete that t...
{ "task": "toolcall_config_migrate_008", "sample_idx": 3, "attempt": 1, "steps": 3, "usage": { "prompt_tokens": 14037, "completion_tokens": 310, "total_tokens": 14347 }, "missing_tools": [], "error": null, "duration_s": 30.22, "evaluation": { "correct": true, "score": 1, "det...
agent
[ { "role": "system", "content": "You are an AI agent that will be given a specific task. You are to complete that task using the tools provided in 128 steps. You will need to call a finish tool as your last step, where you will pass your finish reason and any required final fields for that tool.\n You are no...
[ { "type": "function", "function": { "name": "code_exec", "description": "Execute a shell command in the execution environment. Returns exit code, stdout, and stderr as XML.", "parameters": { "description": "Shell command to execute in the execution environment.", "propertie...
{"provider":null,"name":"agent-tracer","split":"train","subset":"toolcall","synthetic":{"synth":true(...TRUNCATED)
{"task":"toolcall_config_migrate_009","sample_idx":3,"attempt":1,"steps":3,"usage":{"prompt_tokens":(...TRUNCATED)
agent
[{"role":"system","content":"You are an AI agent that will be given a specific task. You are to comp(...TRUNCATED)
[{"type":"function","function":{"name":"code_exec","description":"Execute a shell command in the exe(...TRUNCATED)
{"provider":null,"name":"agent-tracer","split":"train","subset":"toolcall","synthetic":{"synth":true(...TRUNCATED)
{"task":"toolcall_config_migrate_010","sample_idx":0,"attempt":1,"steps":3,"usage":{"prompt_tokens":(...TRUNCATED)
agent
[{"role":"system","content":"You are an AI agent that will be given a specific task. You are to comp(...TRUNCATED)
[{"type":"function","function":{"name":"code_exec","description":"Execute a shell command in the exe(...TRUNCATED)
End of preview.

agent-tracer SFT trajectories

⚠️ Work in progress. This dataset and AgentTracer are under active development. The schema and contents may change without notice.

1,023 multi-turn agent trajectories in OpenAI-style conversations format, with tools schemas, per-step tool calls, and per-trajectory evaluation metadata. All trajectories were generated with moonshotai/Kimi-K3.

Subset Rows Content
document 400 PDF / SQLite / XLSX question answering over generated documents
search 300 Multi-hop retrieval over a generated document corpus
toolcall 299 Config migration, CSV cleaning, reconciliation, log analysis
swe 24 Issue resolution in real open-source repositories

Fields

  • conversations — system / user / assistant / tool messages; assistant turns may carry thinking and tool_calls.
  • tools — the tool schemas available for that trajectory.
  • source — {provider, name, split, subset, synthetic{model, ground_truth, system_prompt}}.
  • extra — {task, sample_idx, attempt, steps, usage, missing_tools, error, duration_s, evaluation, exit_status}.
  • category — agent (999) or coding (24).

Licensing

This dataset is under mixed licensing. Read this before redistributing it or training on it.

Dataset contribution — Apache-2.0. The trajectory structure, the task generators, the metadata schema, and the 999 rows of the document, search and toolcall subsets are released by the dataset authors under the Apache License 2.0. That material is procedurally generated and entirely fictional: all names, organizations, projects and documents in it are invented, and it contains no third-party or personally identifying content.

Embedded third-party source code — original licenses apply. The 24 rows of the swe subset reproduce source files from 24 real open-source repositories verbatim (~0.96 MB across 157 file paths, 87 of them complete files). That code remains under its original license — MIT (12 repositories), Apache-2.0 (9) or BSD-3-Clause (3) — and is not relicensed by this dataset. Because upstream projects carry their notices in a root LICENSE file rather than in per-file headers, most of the reproduced files carry no inline notice; the required notices are supplied instead by ATTRIBUTION.md and the verbatim license texts under LICENSES/. Retain both if you redistribute this dataset or a derivative of it.

No copyleft-licensed (GPL / LGPL / AGPL / MPL) or Creative Commons content is present anywhere in this dataset.

GitHub issue text. The swe prompts quote the body of the originating GitHub issue. Issue text is authored by individual GitHub users and licensed to GitHub under the GitHub Terms of Service; it is not covered by the repository licenses. See ATTRIBUTION.md.

Generating model. All trajectories are outputs of moonshotai/Kimi-K3, used under the Kimi K3 License. That license does not claim ownership of model outputs and does not restrict training on them, but its §2 (Model-as-a-Service operators above USD 20M revenue over 12 months) and §3 (products above 100M MAU or USD 20M monthly revenue must display "Kimi K3") may apply to what you build from this data. The §4(a) internal-use exemption does not apply once these outputs are redistributed.

If you need a build with unambiguous single-license terms, drop the 24 rows where source.subset == "swe"; the remaining 999 rows are Apache-2.0 with only the Kimi K3 conditions above attached.

Citation

@misc{agent_tracer_sft,
  title  = {agent-tracer SFT trajectories},
  year   = {2026},
  note   = {Generated with moonshotai/Kimi-K3}
}
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