Ironfang Finance changelog
What changed in Ironfang Finance and across the Ironfang platform: releases, new capabilities, moved addresses and renames.
AddedIronfang Finance
242 validation rules explained
The rule reference explains 100 more rules, completing the Standard, Zero rated, Exempt, Reverse charge, Intra-community, Export and Not subject to VAT categories, the decimals rules and the Peppol exemption code pairings. Each comes with a recorded failing and corrected document.
RemovedIronfang Render, Ironfang Audit, Ironfang Finance
The Renderwolf, Auditwolf and Financewolf API names are retired
The /renderwolf, /auditwolf and /financewolf API prefixes now answer 410 Gone with the current address; use /render, /audit and /finance. Responses and webhooks carry only the X-Ironfang-* and Ironfang-* headers, MCP tools answer only to render.* and audit.*, and closing a Finance account takes DELETE FINANCE.
RemovedIronfang Render, Ironfang Finance
SDKs 2.0.0 drop the launch-era names
@ironfang/render and ironfang-render 2.0.0 no longer export Renderwolf or RenderwolfError or ship the ironfang_renderwolf module; @ironfang/finance and ironfang-finance 2.0.0 drop Financewolf, FinancewolfError, ironfang_financewolf, the financewolf command and FINANCEWOLF_API_KEY. Use the Ironfang names and IRONFANG_API_KEY.
DeprecatedIronfang Render, Ironfang Audit, Ironfang Finance
Response and webhook headers are named X-Ironfang-* and Ironfang-*
Responses carry X-Ironfang-Credits, X-Ironfang-Cache, X-Ironfang-Render-Ms and the rest, and webhooks are signed with Ironfang-Signature, Ironfang-Timestamp and Ironfang-Event-Id. The launch-era X-Renderwolf-*, X-Financewolf-* and Renderwolf-/Auditwolf-/Financewolf- headers are still sent alongside for now and will be removed; the SDKs (1.0.1), the CLI, render-action v1.2.0 and the n8n node 0.4.3 already read the new names.
ChangedPlatform
The MCP server is at mcp.ironfang.com
Point MCP clients at https://mcp.ironfang.com/mcp. The server is listed in the MCP Registry as com.ironfang/ironfang; the earlier uk.ironfang/ironfang entry is deprecated.
ChangedPlatform, Ironfang Render, Ironfang Finance
Clients call api.ironfang.com
New releases call the API at api.ironfang.com directly: the ironfang CLI 0.2.1, render-action v1.1.0, @ironfang/renderwolf 0.1.1, @ironfang/financewolf 0.2.1 and the n8n node 0.4.2. Upgrade older versions: HTTP clients drop the API key when they follow the redirect from api.ironfang.uk to another domain. The n8n node sends credentials saved with an ironfang.uk address to ironfang.com without any change to the workflow.
ChangedPlatform
Every service moved to ironfang.com
The API is at api.ironfang.com, sign-in at id.ironfang.com, the portal at portal.ironfang.com and the status page at status.ironfang.com. The ironfang.uk names redirect to their ironfang.com twins for a year; API calls should move now, because a redirect to another domain does not carry the API key.
ChangedPlatform
The website moved to ironfang.com
Every page of ironfang.uk now lives at the same path on ironfang.com, and the old addresses redirect permanently.
AddedPlatform
The site in German and French
Product pages, guides, the free tools, the legal pages and the Finance rule reference are published in German and French at /de and /fr, alongside English.
AddedIronfang Finance
Peppol BIS Billing 3 through the V2 API
The V2 validation API accepts Peppol BIS Billing 3 documents, on their own engine, beside XRechnung and ZUGFeRD / Factur-X.
AddedIronfang Finance
Finance SDKs 0.2.0: V2 validation
The TypeScript and Python clients, the CLI and the GitHub Action validate XRechnung and ZUGFeRD / Factur-X through V2, as XML or PDF.
AddedIronfang Finance
ZUGFeRD / Factur-X validation, XML or PDF
V2 validates ZUGFeRD / Factur-X 2.5.2 for the five base profiles, including hybrid PDFs: the invoice XML is extracted from the PDF and checked, and signed reports cover V2 results.
AddedIronfang Finance
142 validation rules explained
The rule reference explains 100 more rules, including warning rules, grouped into families you can scan.
AddedIronfang Finance
Free XRechnung validator and viewer
Check an XRechnung invoice and read it as a document, in the browser, in English or German.
AddedPlatform
Articles
Guides and notes from the team, published at /articles with an RSS feed.
ChangedPlatform, Ironfang Render, Ironfang Audit, Ironfang Finance
API paths: /render, /audit and /finance
Each product is served under its own name on the API. The launch-era prefixes /renderwolf, /auditwolf and /financewolf still answer as aliases.
AddedPlatform, Ironfang Render, Ironfang Rig, Ironfang Audit, Ironfang Finance
One ironfang CLI
ironfang 0.2.0 brings render, rig (and rig connect), audit verify and finance verify into one checksummed binary for Linux, macOS and Windows.
AddedIronfang Finance
The e-invoice rule reference
Plain-language explanations of 42 validation rules, with a searchable catalogue and a failing example for each.
ChangedPlatform, Ironfang Render, Ironfang Audit, Ironfang Finance
Renderwolf, Auditwolf and Financewolf are Ironfang Render, Audit and Finance
The products took the Ironfang name and their pages moved to /render, /audit and /finance. The old addresses redirect to the same page.