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

# Check for an existing file by hash

> Dedup pre-check — returns whether your account already has a file with
this content hash. Lets clients skip the upload entirely.




## OpenAPI

````yaml /openapi.yaml get /files/check
openapi: 3.1.0
info:
  title: varg API
  version: 2.0.0
  description: |
    Unified REST API for AI media generation at `api.varg.ai/v2`.

    One API key, ~80 models across 8 providers, async jobs, stable output URLs
    on `s3.varg.ai`, files with lineage, and transparent credit billing
    (1 credit = 1 cent = $0.01).

    **The async job pattern:** every generation request returns `202 Accepted`
    with a job object (`status: queued`). Poll `GET /jobs/{id}` until the job
    reaches a terminal status (`completed`, `failed`, or `cancelled`), then read
    `output.outputs[0].url`. Alternatively, set `options.webhook_url` in the
    request to receive an HMAC-signed callback when the job finishes.
servers:
  - url: https://api.varg.ai/v2
security:
  - bearerAuth: []
tags:
  - name: Generation
    description: >-
      Create generation jobs (image, video, speech, music, transcription,
      ffmpeg, render, pipeline)
  - name: Tools
    description: Discover tools, their schemas, and call any tool generically
  - name: Jobs
    description: Poll and manage job lifecycle
  - name: Files
    description: Upload, import, probe, and manage files
  - name: Lineage
    description: Resolve which job produced a file
  - name: Pricing
    description: Estimate costs and browse the price catalog
  - name: Billing
    description: Balance, usage, and transaction history
  - name: Account
    description: Identity and API key management
paths:
  /files/check:
    get:
      tags:
        - Files
      summary: Check for an existing file by hash
      description: |
        Dedup pre-check — returns whether your account already has a file with
        this content hash. Lets clients skip the upload entirely.
      operationId: checkFileHash
      parameters:
        - name: hash
          in: query
          required: true
          schema:
            type: string
          description: sha256 hex, with or without the `sha256:` prefix
      responses:
        '200':
          description: Check result
          content:
            application/json:
              schema:
                type: object
                properties:
                  exists:
                    type: boolean
                  file:
                    type:
                      - object
                      - 'null'
                    properties:
                      file_id:
                        type: string
                      url:
                        type: string
                      media_type:
                        type: string
                      size:
                        type: integer
                      filename:
                        type:
                          - string
                          - 'null'
                      origin:
                        type: string
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: |
        varg API key (`varg_...`). Get one at [app.varg.ai](https://app.varg.ai)
        or run `bunx vargai login`. App sessions may alternatively send a
        Supabase JWT.

````