Ironfang

Renderwolf is the rendering API from Ironfang Ltd, a UK software company that builds and operates self-service developer APIs. It turns a URL or a block of raw HTML into screenshots, PDFs, templated images, QR codes, captioned video clips and scrolling site previews over plain HTTPS and JSON, with no browser fleet for the customer to run. The v1 REST API is described by a published OpenAPI 3.1 contract covering 33 operations across synchronous rendering, reusable HTML templates, signed render URLs, durable asynchronous jobs, batches of up to 100, and webhook or S3-compatible delivery destinations. A remote MCP server at mcp.ironfang.uk exposes the same core to AI assistants over OAuth 2.1 with a per-connection credit budget, and an llms.txt, a TypeScript and Python SDK, a CLI and an n8n node round out the surface. Plans are hard-capped rather than metered into overage, cache hits are free, and failed renders are refunded.

Ironfang publishes 7 APIs on the APIs.io network, including Account API, Batches API, Destinations API, and 4 more. Tagged areas include Developer Tools, screenshot-api, website screenshot, HTML to PDF, and PDF API.

The Ironfang catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Ironfang’s developer surface includes authentication, CLI, sandbox, getting-started guide, support, pricing, signup flow, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub
66.0/100 strong ▬ flat Agent 49/100 agent native Front door AI 1/6 silent Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
1 APIs 2 MCP Servers
Developer Toolsscreenshot-apiwebsite screenshotHTML to PDFPDF APIImage APIOG Image APIQR Code APIWebsite-to-VideoRendering InfrastructureMCPUK-hosted

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Composite quality — 66.0/100 · strong
Contract Quality 11.5 / 19
Developer Ergonomics 11.7 / 15
Access Clarity 11.4 / 15
Operational Transparency 5.6 / 10
Contract Governance 0.0 / 9
Discoverability 5.6 / 8
Regulatory Posture 5.1 / 15
Create-or-Update Ergonomics 2.8 / 10
Agent readiness — 49/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 6 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 5 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/ironfang: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Interfaces this provider implements that became standards by being copied rather than ratified. Each is profiled by the API Commons, and the evidence column says how the claim was established — not that it was made.

The S3 Interface
prose — states compatibility; nothing published to check it against
8 core of 116 operations graded · api-commons/storage

APIs 7

Individual APIs this provider publishes, each with its own machine-readable definition.

Ironfang Account API

Usage against quota.

Ironfang Batches API

Up to 100 renders submitted, and refused, together.

Ironfang Destinations API

Where a finished job goes - a signed webhook, or your own S3 bucket.

Ironfang Jobs API

The Jobs API from Ironfang — 4 operation(s) for jobs.

Ironfang Render API

Turn a URL or HTML into an image, PDF or video.

Ironfang Signed URLs API

Shareable render URLs that need no API key.

Ironfang Templates API

Stored HTML with `{{variable}}` placeholders, rendered on demand.

Scroll for all 7

MCP Servers 2

Model Context Protocol servers that expose these APIs to AI agents.

Ironfang MCP Server

MCP SERVER

Ironfang MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Ironfang Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Ironfang Rate Limits

4 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Ironfang Webhooks

ASYNCAPI

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Ironfang Authentication

http/oauth2 · 2 schemes

SECURITY

Ironfang Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Ironfang Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 4

Portal, sign-up, and the first successful call

Sandbox
Sandbox
 DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 MCPServer
MCPServer
 WellKnown
WellKnown
 AgentSkill
AgentSkill

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Idempotency
Idempotency
 Conformance
Conformance
 Lifecycle
Lifecycle

Build 4

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs
 CLI
CLI
 GitHubOrganization
GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Operate 3

Status, limits, changes, and where to get help

StatusPage
StatusPage
 RateLimits
RateLimits
 Support
Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans
Plans
 Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Website
Website

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
name: Ironfang
description: Renderwolf is the rendering API from Ironfang Ltd, a UK software company that builds and operates self-service
  developer APIs. It turns a URL or a block of raw HTML into screenshots, PDFs, templated images, QR codes, captioned video
  clips and scrolling site previews over plain HTTPS and JSON, with no browser fleet for the customer to run. The v1 REST
  API is described by a published OpenAPI 3.1 contract covering 33 operations across synchronous rendering, reusable HTML
  templates, signed render URLs, durable asynchronous jobs, batches of up to 100, and webhook or S3-compatible delivery destinations.
  A remote MCP server at mcp.ironfang.uk exposes the same core to AI assistants over OAuth 2.1 with a per-connection credit
  budget, and an llms.txt, a TypeScript and Python SDK, a CLI and an n8n node round out the surface. Plans are hard-capped
  rather than metered into overage, cache hits are free, and failed renders are refunded.
url: https://raw.githubusercontent.com/api-evangelist/ironfang/refs/heads/main/apis.yml
created: '2026-09-02'
modified: '2026-09-02'
specificationVersion: '0.21'
tags:
- Developer Tools
- screenshot-api
- website screenshot
- HTML to PDF
- PDF API
- Image API
- OG Image API
- QR Code API
- Website-to-Video
- Rendering Infrastructure
- MCP
- UK-hosted
tags_raw:
- Developer Tools
- Screenshot API
- Website Screenshot
- HTML-to-PDF
- PDF API
- Image API
- OG Image API
- QR Code API
- Website-to-Video
- Rendering Infrastructure
- MCP
- UK-hosted
apis:
- aid: ironfang:ironfang-account-api
  name: Ironfang Account API
  description: Usage against quota.
  humanURL: https://ironfang.uk/renderwolf/docs
  baseURL: https://api.ironfang.uk/renderwolf
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/ironfang-account-api-openapi.yml
  - type: Documentation
    url: https://ironfang.uk/renderwolf/docs
  - type: APIReference
    url: https://ironfang.uk/renderwolf/docs
  - type: LLMsTxt
    url: llms/ironfang-llms.txt
  - type: LLMsTxt
    url: https://ironfang.uk/llms.txt
  - type: ToolCrosswalk
    url: mcp/ironfang-tool-crosswalk.yml
  - type: DataModel
    url: data-model/ironfang-data-model.yml
  - type: ErrorCatalog
    url: errors/ironfang-problem-types.yml
  - type: Webhooks
    url: asyncapi/ironfang-webhooks.yml
- aid: ironfang:ironfang-batches-api
  name: Ironfang Batches API
  description: Up to 100 renders submitted, and refused, together.
  humanURL: https://ironfang.uk/renderwolf/docs
  baseURL: https://api.ironfang.uk/renderwolf
  tags:
  - Batches
  properties:
  - type: OpenAPI
    url: openapi/ironfang-batches-api-openapi.yml
  - type: Documentation
    url: https://ironfang.uk/renderwolf/docs
  - type: APIReference
    url: https://ironfang.uk/renderwolf/docs
  - type: LLMsTxt
    url: llms/ironfang-llms.txt
  - type: LLMsTxt
    url: https://ironfang.uk/llms.txt
  - type: ToolCrosswalk
    url: mcp/ironfang-tool-crosswalk.yml
  - type: DataModel
    url: data-model/ironfang-data-model.yml
  - type: ErrorCatalog
    url: errors/ironfang-problem-types.yml
  - type: Webhooks
    url: asyncapi/ironfang-webhooks.yml
- aid: ironfang:ironfang-destinations-api
  name: Ironfang Destinations API
  description: Where a finished job goes - a signed webhook, or your own S3 bucket.
  humanURL: https://ironfang.uk/renderwolf/docs
  baseURL: https://api.ironfang.uk/renderwolf
  tags:
  - Destination
  tags_raw:
  - Destinations
  properties:
  - type: OpenAPI
    url: openapi/ironfang-destinations-api-openapi.yml
  - type: Documentation
    url: https://ironfang.uk/renderwolf/docs
  - type: APIReference
    url: https://ironfang.uk/renderwolf/docs
  - type: LLMsTxt
    url: llms/ironfang-llms.txt
  - type: LLMsTxt
    url: https://ironfang.uk/llms.txt
  - type: ToolCrosswalk
    url: mcp/ironfang-tool-crosswalk.yml
  - type: DataModel
    url: data-model/ironfang-data-model.yml
  - type: ErrorCatalog
    url: errors/ironfang-problem-types.yml
  - type: Webhooks
    url: asyncapi/ironfang-webhooks.yml
- aid: ironfang:ironfang-jobs-api
  name: Ironfang Jobs API
  description: The Jobs API from Ironfang — 4 operation(s) for jobs.
  humanURL: https://ironfang.uk/renderwolf/docs
  baseURL: https://api.ironfang.uk/renderwolf
  tags:
  - Job
  tags_raw:
  - Jobs
  properties:
  - type: OpenAPI
    url: openapi/ironfang-jobs-api-openapi.yml
  - type: Documentation
    url: https://ironfang.uk/renderwolf/docs
  - type: APIReference
    url: https://ironfang.uk/renderwolf/docs
  - type: LLMsTxt
    url: llms/ironfang-llms.txt
  - type: LLMsTxt
    url: https://ironfang.uk/llms.txt
  - type: ToolCrosswalk
    url: mcp/ironfang-tool-crosswalk.yml
  - type: DataModel
    url: data-model/ironfang-data-model.yml
  - type: ErrorCatalog
    url: errors/ironfang-problem-types.yml
  - type: Webhooks
    url: asyncapi/ironfang-webhooks.yml
- aid: ironfang:ironfang-render-api
  name: Ironfang Render API
  description: Turn a URL or HTML into an image, PDF or video.
  humanURL: https://ironfang.uk/renderwolf/docs
  baseURL: https://api.ironfang.uk/renderwolf
  tags:
  - Render
  properties:
  - type: OpenAPI
    url: openapi/ironfang-render-api-openapi.yml
  - type: Documentation
    url: https://ironfang.uk/renderwolf/docs
  - type: APIReference
    url: https://ironfang.uk/renderwolf/docs
  - type: LLMsTxt
    url: llms/ironfang-llms.txt
  - type: LLMsTxt
    url: https://ironfang.uk/llms.txt
  - type: ToolCrosswalk
    url: mcp/ironfang-tool-crosswalk.yml
  - type: DataModel
    url: data-model/ironfang-data-model.yml
  - type: ErrorCatalog
    url: errors/ironfang-problem-types.yml
  - type: Webhooks
    url: asyncapi/ironfang-webhooks.yml
- aid: ironfang:ironfang-signed-urls-api
  name: Ironfang Signed URLs API
  description: Shareable render URLs that need no API key.
  humanURL: https://ironfang.uk/renderwolf/docs
  baseURL: https://api.ironfang.uk/renderwolf
  tags:
  - Signed URLs
  properties:
  - type: OpenAPI
    url: openapi/ironfang-signed-urls-api-openapi.yml
  - type: Documentation
    url: https://ironfang.uk/renderwolf/docs
  - type: APIReference
    url: https://ironfang.uk/renderwolf/docs
  - type: LLMsTxt
    url: llms/ironfang-llms.txt
  - type: LLMsTxt
    url: https://ironfang.uk/llms.txt
  - type: ToolCrosswalk
    url: mcp/ironfang-tool-crosswalk.yml
  - type: DataModel
    url: data-model/ironfang-data-model.yml
  - type: ErrorCatalog
    url: errors/ironfang-problem-types.yml
  - type: Webhooks
    url: asyncapi/ironfang-webhooks.yml
- aid: ironfang:ironfang-templates-api
  name: Ironfang Templates API
  description: Stored HTML with `{{variable}}` placeholders, rendered on demand.
  humanURL: https://ironfang.uk/renderwolf/docs
  baseURL: https://api.ironfang.uk/renderwolf
  tags:
  - Templates
  properties:
  - type: OpenAPI
    url: openapi/ironfang-templates-api-openapi.yml
  - type: Documentation
    url: https://ironfang.uk/renderwolf/docs
  - type: APIReference
    url: https://ironfang.uk/renderwolf/docs
  - type: LLMsTxt
    url: llms/ironfang-llms.txt
  - type: LLMsTxt
    url: https://ironfang.uk/llms.txt
  - type: ToolCrosswalk
    url: mcp/ironfang-tool-crosswalk.yml
  - type: DataModel
    url: data-model/ironfang-data-model.yml
  - type: ErrorCatalog
    url: errors/ironfang-problem-types.yml
  - type: Webhooks
    url: asyncapi/ironfang-webhooks.yml
image: https://ironfang.uk/logo-wolf-white.svg
maintainers:
- FN: Ironfang Ltd
  email: hello@ironfang.uk
  url: https://ironfang.uk
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 98
  at: '2026-09-02T12:33:19.116Z'
common:
- type: Overlay
  url: overlays/ironfang-openapi-overlay.yaml
- type: MCPServer
  url: mcp/ironfang-mcp.yml
- type: MCPServer
  url: https://mcp.ironfang.uk/mcp
- type: Website
  url: https://www.ironfang.uk/
- type: DomainSecurity
  url: security/ironfang-domain-security.yml
- type: Authentication
  url: authentication/ironfang-authentication.yml
- type: OAuthScopes
  url: scopes/ironfang-scopes.yml
- type: Conventions
  url: conventions/ironfang-conventions.yml
- type: Idempotency
  url: conventions/ironfang-conventions.yml
- type: Packages
  url: packages/ironfang-packages.yml
- type: SDKs
  url: packages/ironfang-packages.yml
- type: CLI
  url: cli/ironfang-cli.yml
- type: WellKnown
  url: well-known/ironfang-well-known.yml
- type: Conformance
  url: conformance/ironfang-conformance.yml
- type: Lifecycle
  url: lifecycle/ironfang-lifecycle.yml
- type: StatusPage
  url: https://status.ironfang.uk
- type: Sandbox
  url: sandbox/ironfang-sandbox.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Plans
  url: plans/ironfang-plans-pricing.yml
- type: RateLimits
  url: rate-limits/ironfang-rate-limits.yml
- type: DeveloperPortal
  url: https://ironfang.uk/renderwolf
- type: GettingStarted
  url: https://ironfang.uk/renderwolf/guides
- type: Support
  url: https://ironfang.uk/contact
- type: GitHubOrganization
  url: https://github.com/ironfang-ltd
- type: Pricing
  url: https://ironfang.uk/renderwolf
- type: SignUp
  url: https://id.ironfang.uk/signup
- type: TermsOfService
  url: https://ironfang.uk/legal/terms
- type: PrivacyPolicy
  url: https://ironfang.uk/legal/privacy
x-enrichment:
  date: '2026-09-02'
  status: enriched
  artifacts_added: 29
  pass: local-v1

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