---
title: "Check if asset exists by hash"
method: HEAD
path: "/api/assets/hash/{hash}"
tags: ["file"]
---

# Check if asset exists by hash

`HEAD /api/assets/hash/{hash}`

Checks if an asset exists in the system by its blake3 hash.
Returns 200 if the asset exists, 404 if it doesn't.

## Path parameters

- `hash` string, required

## Response `200`

Asset exists

## Other responses

- `400` — Invalid hash format
- `401` — Unauthorized
- `404` — Asset not found
- `500` — Internal server error

---

[API](https://skmtc.net/comfy-org/apis/comfyui-api.md) · [All operations](https://skmtc.net/comfy-org/apis/comfyui-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/comfy-org/comfyui-api/versions/9fb6092a836d/schema)