---
title: "Get Vep Cache Stats"
method: GET
path: "/preprocessing/vep-cache/stats"
tags: ["preprocessing", "admin"]
---

# Get Vep Cache Stats

`GET /preprocessing/vep-cache/stats`

## Request

- Base URL: `https://api.helena.bio` (the document declares no server; this is the origin it was published from)
- URL: `https://api.helena.bio/preprocessing/vep-cache/stats`
- Auth: none declared

Get aggregated statistics for the VEP annotation cache.

Read-only endpoint. Opens vep_cache.duckdb with read_only=True.
Does not acquire any locks -- safe during concurrent pipeline runs.
Typical response time: < 1 second for ~50M rows.

## Response `200`

Successful Response

- VepCacheStatsResponse: Response for GET /preprocessing/vep-cache/stats.
  - `file_exists` boolean, required
  - `file_size_bytes` integer
  - `file_size_human` string
  - `vep_version` string, nullable
  - `positive_count` integer
  - `negative_count` integer
  - `total_count` integer
  - `oldest_entry` string, nullable
  - `newest_entry` string, nullable
  - `dedup_cutoff` string, nullable
  - `impact_distribution` VepCacheDistributionEntry[]
    - `label` string, required
    - `count` integer, required
    - `pct` number
  - `consequence_distribution` VepCacheDistributionEntry[]
    - `label` string, required
    - `count` integer, required
    - `pct` number
  - `biotype_distribution` VepCacheDistributionEntry[]
    - `label` string, required
    - `count` integer, required
    - `pct` number
  - `chromosome_distribution` VepCacheChromosomeEntry[]
    - `chromosome` string, required
    - `positive` integer, required
    - `negative` integer, required
  - `sample_positive` object[]
  - `sample_negative` object[]
  - `query_time_ms` integer

---

[API](https://skmtc.dev/helena/apis/helix-insight-variant-analysis-service.md) · [All operations](https://skmtc.dev/helena/apis/helix-insight-variant-analysis-service/llms.txt) · [OpenAPI document](https://skmtc.dev/helena/apis/helix-insight-variant-analysis-service/revisions/fe51fd20cdf1?raw)