> ## Documentation Index
> Fetch the complete documentation index at: https://docs.iqrush.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Check results stability — HTTP

> Check whether one measurement has converged for the requested scope.

Check whether one measurement has converged for the requested scope.

**Method:** `GET`

**Path:** `/projects/{project_id}/runs/{run_id}/results-stability`

Use the HTTP base for your authorized environment and an `Authorization: Bearer` header. See [authentication](/developers/guides/04-authentication) and [HTTP setup](/developers/guides/06-http-quickstart).

## Parameters

This table covers the standard read profile. It excludes internal application routes and advanced analysis controls.

| Name | Location | Type | Required | Default | Meaning |
| - | - | - | - | - | - |
| `project_id` | path | string | Yes | — | Project ID from list\_projects. Select the project in the intended workspace and environment. |
| `run_id` | path | string | Yes | — | Run ID from list\_runs for this project. Use the exact returned value and check readiness before reading measurements. |
| `aggregation_level` | query | string | No | `"domain"` | domain requests source-domain results; url requests individual-page results. Keep the same reporting unit when comparing measurements. |
| `filters` | query | string | No | `null` | JSON-encoded array. Select measured answers with objects containing dimension and values. Use labels from list\_dimension\_options; inspect returned warnings for filters that were not applied. |

## Request example

Set `IQRUSH_API_BASE` and `IQRUSH_ACCESS_TOKEN` through secure configuration. Replace project/run IDs and sample selections with values returned by your account. JSON objects and arrays are encoded as query strings.

```bash theme={null}
curl --fail-with-body --silent --show-error --get \
  --header "Authorization: Bearer ${IQRUSH_ACCESS_TOKEN}" \
  --header "Accept: application/json" \
  --data-urlencode aggregation_level=domain \
  "${IQRUSH_API_BASE%/}/projects/${IQRUSH_PROJECT_ID}/runs/${IQRUSH_RUN_ID}/results-stability"
```

## Read the response

Read `data.is_converged`, `rank_corr_ok`, `sufficiency_ok`, `structural_snr`, `structural_snr_grain`, and `target_sufficiency_ratio`. `data.results_stability.value` is an SNR value.

Both required checks must pass. The current target is 1.00; use the returned target and flags. Domain and URL SNR are different scopes. This is not a cross-run change test.

### Fields to use

These selected fields explain the example and the result to preserve. Field presence depends on the response; this is not a complete response schema.

| Field | Meaning and use |
| - | - |
| `data.rank_corr_ok` | Whether the returned ranking-stability check passed. |
| `data.sufficiency_ok` | Whether the returned signal-sufficiency check passed. |
| `data.is_converged` | Whether both required checks passed for the reported scope. |
| `data.structural_snr` | Returned signal-to-noise ratio; use it with the pass flags. |
| `data.structural_snr_grain` | Whether that ratio describes domain or URL results. |
| `data.target_sufficiency_ratio` | Returned sufficiency target. Passing it alone does not establish convergence. |

Selected response fields from IQRush Dev. Lists are shortened and project/run IDs are placeholders; this is not the full response.

```json theme={null}
{
  "data_ready": true,
  "data": {
    "rank_corr_ok": true,
    "sufficiency_ok": true,
    "is_converged": true,
    "structural_snr": 2.394432125056379,
    "structural_snr_grain": "domain",
    "target_sufficiency_ratio": 1
  }
}
```

Read the actual returned scope, counts, and interval levels before interpreting these fields.

MCP equivalent: [`get_results_stability`](/developers/tools/get_results_stability). Use the parameters and defaults on this page for HTTP.

## If the result is unavailable

Check HTTP status and the response’s `error` field before using data. A successful empty response does not establish a zero value. Preserve `not_available`, `not_available_reason`, `unavailable_reason`, and `linked` where returned. [Errors and recovery](/developers/guides/13-errors) shows observed examples.


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