Documentation Index
Fetch the complete documentation index at: /llms.txt
Use this file to discover all available pages before exploring further.
Investigate source-level changes between a reference run and the selected run.
attribute_drift. Operation: read. Uses the authorized connection; no project or content changes are made by this tool.
| Name | Type | Required | Default | Meaning and accepted values |
|---|---|---|---|---|
project_id | string | Yes | Required | Project ID from list_projects. Select the project in the intended workspace and environment. |
run_id | string | Yes | Required | Run ID from list_runs for this project. Use the exact returned value and check readiness before reading measurements. |
reference | string or object or null | No | null | Choose the comparison run: previous_run, first_run, or specific_run. For specific_run, include run_id. The request’s run_id is the checkpoint. |
aggregation_level | string | No | 'domain' | domain requests source-domain results; url requests individual-page results. Keep the same reporting unit when comparing measurements. |
n_boot | integer | No | Omit for standard use | Optional advanced analysis control. Omit for standard reporting; use the advertised runtime schema if an integration requires it. |
group_by | string[] or null | No | null | Split results into rows by the requested dimensions. Check both filters_applied.group_by and each row’s group_by_values before labeling the groups. |
filters | object[] or null | No | null | Select measured answers with objects containing dimension and values. Use labels from list_dimension_options; inspect returned warnings for filters that were not applied. |
subject | string or object or null | No | null | Choose sources with kind: leaderboard, all, owned, or specified. For specified, provide domains containing exact source keys for the requested reporting unit. |
params object for MCP tools/call.
{
"name": "attribute_drift",
"arguments": {
"project_id": "PROJECT_ID",
"run_id": "RUN_ID",
"reference": {
"type": "previous_run"
},
"aggregation_level": "domain",
"subject": {
"kind": "owned"
}
}
}
| Field | Meaning and use |
|---|---|
data.domain_details[].domain_or_url | Source whose citation-share change is described. |
data.domain_details[].share_diff.value_a | Reference-run value. |
data.domain_details[].share_diff.value_b | Checkpoint-run value. |
data.domain_details[].share_diff.diff | Checkpoint minus reference. Preserve the scale when displaying the change. |
data.domain_details[].share_diff.ci_diff | Confidence interval on the difference, not on either individual estimate. |
data.domain_details[].share_diff.significant | Returned significance result. It does not establish business impact or causation. |
{
"data_ready": true,
"data": {
"reference_type": "previous_run",
"aggregation_level": "domain",
"domain_details": [
{
"domain_or_url": "colorescience.com",
"share_diff": {
"value_a": 0.0335164004223577,
"value_b": 0.026726239624239412,
"diff": -0.006790160798118287,
"ci_diff": {
"lower": -0.019421924882329574,
"upper": 0.00255965226798446,
"level": 0.95
},
"significant": false
},
"is_owned": true
}
]
}
}