generated: '2026-09-02'

description: "Ironfang Renderwolf sandbox information"
method: searched
source: https://ironfang.uk/tools
docs:
  - https://ironfang.uk/tools
  - https://ironfang.uk/renderwolf
note: >-
  Renderwolf publishes NO test mode and NO sandbox environment - there is one set of endpoints,
  one fleet, one key prefix and one billing path. What it publishes instead are two things that
  do the same job for a developer: a set of free, no-account browser tools that exercise the
  real rendering engine, and a free plan that needs no card. Recorded as they are; nothing here
  is a simulated environment.
test_mode:
  exists: false
  key_prefixes:
    live: 'if_live_ (per the API reference and the CLI README); the OpenAPI info.description says rw_live_ - see authentication/ironfang-authentication.yml'
    test: none - there is no test key prefix
  note: >-
    Because there is no test mode, every call an integration makes during development is a real
    render against the real fleet. The mitigations Ironfang offers are the free plan, free cache
    hits, free QR codes, and automatic refunds on failed work.
free_tools_console:
  url: https://ironfang.uk/tools
  http_status: 200
  auth: none - no account, no key
  description: >-
    Browser tools backed by the production API, usable anonymously to see exactly what the
    engine returns before writing any code.
  tools:
    - name: Full page screenshot
      url: https://ironfang.uk/tools/full-page-screenshot
      exercises: createScreenshot
    - name: QR code generator
      url: https://ironfang.uk/tools/qr-code-generator
      exercises: createQr
    - name: QR code verifier
      url: https://ironfang.uk/tools/qr-code-verifier
    - name: Favicon generator
      url: https://ironfang.uk/tools/favicon-generator
    - name: Image converter
      url: https://ironfang.uk/tools/image-converter
    - name: UUID generator
      url: https://ironfang.uk/tools/uuid-generator
free_tier:
  credits_per_month: 250
  card_required: false
  signup: https://id.ironfang.uk/signup
  parity: >-
    Same endpoints, same rendering fleet, same product features as paid plans. The only
    difference is a small Renderwolf badge in the corner of screenshots, template images, PDFs
    and clips, applied from the plan rather than from any request field.
safe_rehearsal_affordances:
  - name: capability discovery
    endpoint: 'GET /renderwolf/v1/capabilities'
    auth: none
    http_status: 200
    does: >-
      States which capabilities are live, planned or not offered, with dates. Callable before
      writing a line of integration code and before creating an account.
  - name: destination test delivery
    operation: testDestination
    does: >-
      Sends a real test delivery to a registered webhook now and reports what happened; a
      receiver that does not answer is reported as a fact, not an error.
  - name: validation before charge
    does: >-
      A job submission is validated exactly as the synchronous endpoint would validate it before
      anything is charged, and a batch of up to 100 is validated whole - a batch that would
      exceed the monthly credits returns 429 quota_exhausted having charged nothing and left no
      jobs behind.
  - name: cache hits are free
    header: 'X-Renderwolf-Cache: hit'
    does: Re-running an identical request during development costs zero credits.
  - name: MCP connection budget
    does: >-
      Every MCP connection carries its own budget of max(25, 10% of the plan's monthly credits)
      per period, so an agent under test cannot spend the month.
test_values:
  published: none
  note: >-
    Ironfang publishes no magic test URLs, fixture pages or deterministic sample targets. The
    documented examples render https://example.com, which is a real public page, not a fixture.