---
title: "Checks if a data handle exists"
method: HEAD
path: "/layers/{layerId}/data/{dataHandle}"
tags: ["blob"]
---

# Checks if a data handle exists

`HEAD /layers/{layerId}/data/{dataHandle}`

Checks if a blob exists for the requested data handle.

## Path parameters

- `layerId` string, required
- `dataHandle` string, required

## Query parameters

- `billingTag` string

## Headers

- `If-None-Match` string

## Response `200`

OK - dataHandle exists

## Other responses

- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not Found - dataHandle doesn't exist

---

[API](https://skmtc.dev/here/apis/query-api-v1.md) · [All operations](https://skmtc.dev/here/apis/query-api-v1/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/here/query-api-v1/revisions/30e5d2645407/schema)