---
title: "Per-tool z-score anomaly scan vs a rolling baseline (window <= 1 day)"
method: GET
path: "/v1/analytics/tools/monitoring/anomaly-detection"
tags: ["analytics"]
---

# Per-tool z-score anomaly scan vs a rolling baseline (window <= 1 day)

`GET /v1/analytics/tools/monitoring/anomaly-detection`

## Query parameters

- `baseline_days` integer
- `z_threshold` number
- `min_invocations` integer
- `tool_id` string, nullable
- `tool_type` string, nullable
- `start_date` string, date, required
- `end_date` string, date, required

## Response `200`

Successful Response

- AnomalyDetectionRow[]
  - `tool_id` string, required
  - `tool_name` string, required
  - `tool_type` string, required
  - `invocation_count` integer, required
  - `error_count` integer, required
  - `current_error_rate` number, required
  - `current_p95_latency_ms` number, required
  - `baseline_valid_days` integer, required
  - `baseline_error_rate_mean` number, nullable
  - `baseline_error_rate_stddev` number, nullable
  - `baseline_p95_latency_mean` number, nullable
  - `baseline_p95_latency_stddev` number, nullable
  - `error_rate_zscore` number, nullable
  - `p95_latency_zscore` number, nullable
  - `is_error_rate_anomaly` integer, required
  - `is_latency_anomaly` integer, required
  - `is_anomaly` integer, required

## Other responses

- `400` — Bad request
- `401` — Authentication required
- `422` — Validation Error

---

[API](https://skmtc.net/oneloop-hq/apis/feather-api.md) · [All operations](https://skmtc.net/oneloop-hq/apis/feather-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/oneloop-hq/feather-api/revisions/5a5597ebb2d6/schema)