attachments maps each attachment file name to a pre-signed HTTPS download URL.
completion_cost_details is the per-category USD breakdown of
completion_cost. Categories mirror completion_token_details. Returned only
when the COMPLETION_COST_DETAILS field is requested.
completion_token_details is the per-category breakdown of completion_tokens.
Category names are model-specific (for example reasoning, audio). Returned
only when the COMPLETION_TOKEN_DETAILS field is requested.
JSON body of the response that caused the error
error_preview is a truncated plain-text error snippet.
is_in_dataset is true when this run is linked to a dataset example.
is_root is true when this run has no parent (it is the trace root).
latency_seconds is wall-clock duration from start to end in seconds.
manifest is the serialized configuration of the traced component (for example
the model parameters, prompt template, or pipeline definition), when recorded.
parent_run_ids lists ancestor run UUIDs from the trace root down to the direct
parent.
price_model_id identifies the pricing model UUID used for cost estimates, when
recorded.
project_id is the tracing project UUID this run was logged to.
prompt_cost_details is the per-category USD breakdown of prompt_cost.
Categories mirror prompt_token_details. Returned only when the
PROMPT_COST_DETAILS field is requested.
prompt_token_details is the per-category breakdown of prompt_tokens.
Category names are model-specific (for example cache_read, cache_write).
Returned only when the PROMPT_TOKEN_DETAILS field is requested.
Enum for run types.
share_url is the fully-qualified URL of this run's public view, rooted at the
deployment's LangSmith app origin (for example
https://smith.langchain.com/public/4f7a1b2c-8d9e-4a0b-9c1d-2e3f4a5b6c7d/r). It
is returned only when SHARE_URL is included in selects, and only when the
run has been explicitly shared; the URL remains stable until the run is
unshared. Anyone with this URL can view the run anonymously, so treat it as a
secret and do not log it.
HTTP status for the response that caused the error
thread_evaluation_time is thread-level evaluation timing (RFC3339 date-time),
when recorded.
thread_id is the conversation thread UUID this run belongs to, if any.
