Ironfang Signed URLs API

openapi: 3.2.0
info:
  title: Renderwolf Signed URLs API
  version: 1.0.0
  summary: Screenshots, PDFs, dynamic images and video through one API.
  description: Renderwolf renders web pages to images, PDFs and video.
  contact:
    name: Ironfang
    email: hello@ironfang.uk
    url: https://ironfang.uk
  termsOfService: https://ironfang.uk/legal/terms
  license:
    name: Proprietary - use governed by the Ironfang terms of service
    url: https://ironfang.uk/legal/terms
servers:
- url: https://api.ironfang.uk/renderwolf
  description: Production
- url: https://api.ironfang.uk
  description: Production, unpartitioned - retained for existing clients
security:
- apiKey: []
tags:
- name: Signed URLs
  description: Shareable render URLs that need no API key.
paths:
  /v1/sign:
    post:
      tags:
      - Signed URLs
      summary: Mint a signed render URL
      description: 'Returns a URL that renders on GET without an API key - safe to put in an

        `` tag or an email. The URL is bound to your account, so renders

        through it meter against your quota.


        Requires signing to be configured on the deployment; returns `501`

        otherwise.'
      operationId: createSignedUrl
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SignRequest'
            examples:
              screenshot:
                value:
                  kind: screenshot
                  url: https://example.com
                  width: 1280
                  ttl_hours: 24
              template:
                value:
                  kind: image
                  template: 0193f0c4-1f4e-7a91-9c3e-2b6f5d8a1e77
                  vars:
                    title: Hello
      responses:
        '200':
          description: The signed URL.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SignedUrl'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '501':
          description: Signing is not configured on this deployment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
  /v1/r/{exp}/{sig}:
    get:
      tags:
      - Signed URLs
      summary: Render from a signed URL
      description: 'The endpoint a signed URL points at. Takes no API key - the signature is

        the credential - so it can be embedded directly in HTML or email. Call

        `POST /v1/sign` to mint one rather than constructing it by hand.'
      operationId: renderSignedUrl
      security: []
      parameters:
      - name: exp
        in: path
        required: true
        description: Expiry stamp, part of the signed payload. `0` never expires.
        schema:
          type: string
      - name: sig
        in: path
        required: true
        description: The signature.
        schema:
          type: string
      responses:
        '200':
          $ref: '#/components/responses/Image'
        '403':
          description: Signature invalid or expired.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Signing is not configured on this deployment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  responses:
    RateLimited:
      description: "Three distinct conditions share this status, separated by `error.code`:\n\n- `rate_limited` - your account exceeded 120 renders/minute\n- `target_rate_limited` - the site being rendered is being hit too hard\n  across all customers (60/minute per host)\n- `quota_exhausted` - the plan's monthly allowance is spent\n\nThe first two clear within the minute, so retry with backoff. The third\ndoes not: upgrade in the portal or wait for the period to roll over.\nBranch on the code rather than the status.\n"
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: No such template, or not yours.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Image:
      description: 'The rendered image. `png` unless `format: jpeg` was requested.

        '
      headers:
        X-Renderwolf-Cache:
          description: '`hit` when served from cache, in which case it was free.'
          schema:
            type: string
            enum:
            - hit
        X-Renderwolf-Credits:
          description: 'What this call cost. `0` on a cache hit, because a cache hit is

            free. Read it to log spend per request without polling

            `/v1/usage`.

            '
          schema:
            type: integer
        X-Renderwolf-Render-Ms:
          description: Render time in milliseconds, excluding any requested delay.
          schema:
            type: integer
        X-Renderwolf-Delay-Ms:
          description: The `delay_ms` actually waited, when one was requested.
          schema:
            type: integer
        X-Renderwolf-Captured-At:
          description: 'RFC 3339 timestamp of a fresh capture. Present only on

            `no_cache` renders, where the response is also `no-store` - the

            pairing is what makes a capture usable as evidence.

            '
          schema:
            type: string
            format: date-time
      content:
        image/png:
          schema:
            type: string
            format: binary
        image/jpeg:
          schema:
            type: string
            format: binary
    Unauthorized:
      description: Missing, malformed, revoked or unknown API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    BadRequest:
      description: Malformed body, or neither/both of `url` and `html`.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    SignedUrl:
      type: object
      properties:
        url:
          type: string
          format: uri
          description: Absolute URL, ready to embed.
        path:
          type: string
          description: Path only, for serving behind your own domain.
    SignRequest:
      type: object
      required:
      - kind
      properties:
        kind:
          type: string
          enum:
          - screenshot
          - image
          description: '`screenshot` signs a URL capture and requires `url`; `image` signs a

            template render and requires `template`.

            '
        url:
          type: string
          format: uri
          description: Required when `kind` is `screenshot`.
        template:
          type: string
          format: uuid
          description: Required when `kind` is `image`.
        vars:
          type: object
          additionalProperties:
            type: string
        width:
          type: integer
          maximum: 4096
        height:
          type: integer
          maximum: 4096
        full_page:
          type: boolean
          default: false
        ttl_hours:
          type: integer
          default: 0
          description: Hours until the URL expires. `0` never expires.
    Error:
      type: object
      required:
      - error
      properties:
        error:
          type: object
          required:
          - code
          - message
          properties:
            code:
              type: string
              description: Stable, safe to branch on.
              enum:
              - bad_request
              - unauthorized
              - invalid_api_key
              - auth_failed
              - forbidden
              - email_unverified
              - not_found
              - quota_exhausted
              - rate_limited
              - target_rate_limited
              - render_failed
              - bad_signature
              - signing_disabled
            message:
              type: string
              description: Human-readable. May change; do not match on it.
      example:
        error:
          code: target_rate_limited
          message: too many renders for that host, try again shortly
  securitySchemes:
    apiKey:
      type: http
      scheme: bearer
      description: 'An API key from the portal, sent as `Authorization: Bearer rw_live_...`.

        '