Bannerbear

Bannerbear Assets API

The Assets API from Bannerbear — 3 operation(s) for assets.

GitHub OpenAPI

Operations 4

GET /assets List assets #
POST /assets Upload an asset #
GET /assets/{uid} Get an asset #
POST /assets/check Batch-check which asset hashes already exist #

Documentation

📖
Documentation
https://www.bannerbear.com/product/image-generation-api/
📖
APIReference
https://developers.bannerbear.com/
📖
Documentation
https://www.bannerbear.com/product/video-generation-api/
📖
Documentation
https://www.bannerbear.com/help/articles/159-create-a-collection-via-api/
📖
Documentation
https://www.bannerbear.com/product/url-to-screenshot-api/
📖
Documentation
https://developers.bannerbear.com/

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/bannerbear/refs/heads/main/openapi/bannerbear-assets-api-openapi.yml

Other Resources

🔗
PostmanCollection
https://raw.githubusercontent.com/api-evangelist/bannerbear/refs/heads/main/collections/bannerbear.postman_collection.json

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OpenAPI Specification

bannerbear-assets-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Bannerbear V5 Assets API
  version: '5.0'
servers:
- url: https://api.bannerbear.com/v5
  description: Async render host. All endpoints.
- url: https://sync.api.bannerbear.com/v5
  description: Synchronous render host. Only accepts POST /images — returns the finished image inline instead of a pending record. Long-running requests may return 408.
security:
- bearerAuth: []
tags:
- name: Assets
paths:
  /assets:
    get:
      summary: List assets
      parameters:
      - name: page
        in: query
        required: false
        schema:
          type: integer
      responses:
        '200':
          description: Paginated list of assets uploaded by this workspace
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
                  properties:
                    uid:
                      type: string
                    url:
                      type: string
                      format: uri
                      description: CDN URL of the uploaded asset
                    mime_type:
                      type: string
                      nullable: true
                      description: Content-Type of the stored asset
                    size:
                      type: integer
                      description: File size in bytes
                    created_at:
                      type: string
                      format: date-time
      tags:
      - Assets
      operationId: getAssets
      x-operation-id-source: derived
    post:
      summary: Upload an asset
      description: 'Upload a file (max 5MB) to storage and get back a durable CDN URL. Send the raw file bytes as the request body with `Content-Type` set to one of the accepted mime types listed below.


        Uploads are deduplicated per workspace by SHA-256 of the payload — pushing the same bytes twice returns the existing record (`200 OK`) rather than creating a duplicate. A fresh upload returns `201 Created`.


        Trial accounts are limited to 20 uploaded assets. Dedupe hits don''t count against the cap.'
      requestBody:
        required: true
        content:
          image/jpeg:
            schema:
              type: string
              format: binary
          image/png:
            schema:
              type: string
              format: binary
          image/webp:
            schema:
              type: string
              format: binary
          image/gif:
            schema:
              type: string
              format: binary
          image/svg+xml:
            schema:
              type: string
              format: binary
          video/mp4:
            schema:
              type: string
              format: binary
          video/webm:
            schema:
              type: string
              format: binary
          video/quicktime:
            schema:
              type: string
              format: binary
          audio/mpeg:
            schema:
              type: string
              format: binary
          audio/wav:
            schema:
              type: string
              format: binary
          audio/mp4:
            schema:
              type: string
              format: binary
          audio/webm:
            schema:
              type: string
              format: binary
          audio/ogg:
            schema:
              type: string
              format: binary
          application/pdf:
            schema:
              type: string
              format: binary
          application/json:
            schema:
              type: string
              format: binary
      responses:
        '200':
          description: Asset already existed (matched by content hash) — existing record returned
          content:
            application/json:
              schema:
                type: object
                properties:
                  uid:
                    type: string
                  url:
                    type: string
                    format: uri
                    description: CDN URL of the uploaded asset
                  mime_type:
                    type: string
                    nullable: true
                    description: Content-Type of the stored asset
                  size:
                    type: integer
                    description: File size in bytes
                  created_at:
                    type: string
                    format: date-time
        '201':
          description: Asset uploaded
          content:
            application/json:
              schema:
                type: object
                properties:
                  uid:
                    type: string
                  url:
                    type: string
                    format: uri
                    description: CDN URL of the uploaded asset
                  mime_type:
                    type: string
                    nullable: true
                    description: Content-Type of the stored asset
                  size:
                    type: integer
                    description: File size in bytes
                  created_at:
                    type: string
                    format: date-time
        '400':
          description: Empty request body
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string
                    description: Human-readable explanation of the error
        '402':
          description: Trial cap hit — upgrade required
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string
                    description: Human-readable explanation of the error
        '413':
          description: Asset exceeds the size cap
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string
                    description: Human-readable explanation of the error
        '415':
          description: Unsupported Content-Type — see requestBody for the accepted list
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string
                    description: Human-readable explanation of the error
        '502':
          description: Upstream storage upload failed
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string
                    description: Human-readable explanation of the error
      tags:
      - Assets
      operationId: postAssets
      x-operation-id-source: derived
  /assets/{uid}:
    get:
      summary: Get an asset
      parameters:
      - name: uid
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Asset details
          content:
            application/json:
              schema:
                type: object
                properties:
                  uid:
                    type: string
                  url:
                    type: string
                    format: uri
                    description: CDN URL of the uploaded asset
                  mime_type:
                    type: string
                    nullable: true
                    description: Content-Type of the stored asset
                  size:
                    type: integer
                    description: File size in bytes
                  created_at:
                    type: string
                    format: date-time
        '404':
          description: Asset not found in this workspace
      tags:
      - Assets
      operationId: getAssetsByUid
      x-operation-id-source: derived
  /assets/check:
    post:
      summary: Batch-check which asset hashes already exist
      description: 'Given a list of SHA-256 content hashes, returns a map of each hash to its existing asset record (or `null` if not stored in this workspace). Lets syncing clients skip the upload round-trip for content that''s already been uploaded — compute the hash locally, batch-check, then only POST the missing ones to `/assets`.


        Max 100 hashes per request.'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - content_hashes
              properties:
                content_hashes:
                  type: array
                  maxItems: 100
                  items:
                    type: string
                    description: SHA-256 hex digest of the file contents
      responses:
        '200':
          description: Map of `hash → asset record or null`. Keys are the hashes from the request; values are the existing asset for that hash, or null if not found.
          content:
            application/json:
              schema:
                type: object
                additionalProperties:
                  oneOf:
                  - type: object
                    properties:
                      uid:
                        type: string
                      url:
                        type: string
                        format: uri
                        description: CDN URL of the uploaded asset
                      mime_type:
                        type: string
                        nullable: true
                        description: Content-Type of the stored asset
                      size:
                        type: integer
                        description: File size in bytes
                      created_at:
                        type: string
                        format: date-time
                  - type: 'null'
        '400':
          description: Empty or oversized content_hashes array
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string
                    description: Human-readable explanation of the error
      tags:
      - Assets
      operationId: postAssetsCheck
      x-operation-id-source: derived
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: API key (e.g. bb_ak_v5_...)
x-provenance:
  method: harvested
  publisher: Bannerbear
  source: https://api.bannerbear.com/v5/openapi.json
  note: split by refine-openapis from the provider's own published document, verified by fetch (openapi/_original/*.fetch.json);
    stamped by stamp-openapi-provenance.py (roadmap#793)