InvoiceHub

InvoiceHub provides a REST API for validating, generating, and converting EU e‑invoices across multiple formats such as UBL, CII, XRechnung, and Factur‑X. Built on the EN 16931 European standard, the service offers free unlimited validation and paid tiers for generation and conversion. The platform includes a developer dashboard, comprehensive documentation, and client libraries, enabling seamless integration for businesses handling electronic invoicing compliance.

InvoiceHub is listed with 1 API on the APIs.io network. Tagged areas include Company, Invoicing, Validation, and EU.

The InvoiceHub catalog on APIs.io includes 1 Spectral governance ruleset.

InvoiceHub’s developer surface includes pricing, engineering blog, API reference, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.1/100 thin Agent 6/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

1 API 1 MCP Servers

Company Invoicing Validation EU

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 30.1/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 1.6 / 17

Access Clarity 12.7 / 17

Operational Transparency 1.0 / 11

Contract Governance 3.6 / 10

Discoverability 4.8 / 9

Regulatory Posture 4.4 / 15

Agent readiness — 6/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →

10 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points Ask about this →
Developer Ergonomics scores 9.5 — up to +18.1 composite points Ask about this →
Operational Transparency scores 9.5 — up to +11.8 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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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 the provider profile at artifacts.apis.io/invoicehub-dev/apis.yml: open an issue on github.com/api-evangelist/invoicehub-dev to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 1

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

InvoiceHub API

Developer-first REST API for EU electronic invoicing.

MCP Servers 1

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

InvoiceHub MCP Server

Remote MCP server at api.invoicehub.dev requiring an API key.

MCP SERVER

InvoiceHub API pricing

Prices published by InvoiceHub, read 2026-11-12 from invoicehub.dev/pricing.

Plan	Price
Free	€0
Pro	€9.25/month
Scale	€49/month
Enterprise	Contact us

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

InvoiceHub Plans Pricing

4 plans

PLANS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

InvoiceHub API Rules

41 rules · 39 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 3

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

InvoiceHub Domain Security

TLSv1.3 · DMARC

SECURITY

InvoiceHub Vulnerability Disclosure

no policy recorded

SECURITY

InvoiceHub Trust Center

GDPR

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

InvoiceHub Agentic Access

1 operation

1 operations · 0 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Documentation 1

Reference material describing how the API behaves

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

MCPServer

MCPServer

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 5

Authentication, authorization, and security posture

Compliance

Compliance

Security

Security

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: invoicehub-dev
name: InvoiceHub
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://invoicehub.dev/opengraph-image?edba1db23c7898d3
description: InvoiceHub provides a REST API for validating, generating, and converting EU e‑invoices across multiple formats
  such as UBL, CII, XRechnung, and Factur‑X. Built on the EN 16931 European standard, the service offers free unlimited validation
  and paid tiers for generation and conversion. The platform includes a developer dashboard, comprehensive documentation,
  and client libraries, enabling seamless integration for businesses handling electronic invoicing compliance.
url: https://artifacts.apis.io/invoicehub-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-12 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-12'
modified: '2026-11-12'
tags:
- Company
- Invoicing
- Validation
- EU
tags_raw:
- Company
- Invoicing
- API
- Validation
- EU
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/invoicehub-dev-agentic-access.yml
- type: Plans
  url: plans/invoicehub-dev-plans-pricing.yml
- type: Spectral
  url: rules/invoicehub-dev-rules.yml
- type: Vocabulary
  url: vocabulary/invoicehub-dev-vocabulary.yml
- type: Compliance
  url: https://invoicehub.dev/security
- type: ErrorCatalog
  url: errors/invoicehub-dev-problem-types.yml
- type: Conformance
  url: conformance/invoicehub-dev-conformance.yml
- type: LLMsTxt
  url: llms/invoicehub-dev-llms.txt
- type: ToolCrosswalk
  url: mcp/invoicehub-dev-tool-crosswalk.yml
- type: MCPServer
  url: mcp/invoicehub-dev-mcp.yml
- type: Hosts
  url: hosts/invoicehub-dev-hosts.yml
- type: Vendors
  url: vendors/invoicehub-dev-vendors.yml
- type: TermsOfService
  url: https://invoicehub.dev/terms
- type: Security
  url: https://invoicehub.dev/security
- type: PrivacyPolicy
  url: https://invoicehub.dev/privacy
- type: Pricing
  url: https://invoicehub.dev/pricing
- type: Login
  url: https://invoicehub.dev/auth/login
- type: Blog
  url: https://invoicehub.dev/blog
- type: APIReference
  url: https://invoicehub.dev/docs
- type: TrustCenter
  url: security/invoicehub-dev-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/invoicehub-dev-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/invoicehub-dev-domain-security.yml
- type: Website
  url: https://invoicehub.dev/
apis:
- name: InvoiceHub API
  description: Developer-first REST API for EU electronic invoicing.
  humanURL: https://invoicehub.dev/docs
  baseURL: https://api.invoicehub.dev
  aid: invoicehub-dev:invoicehub-api
x-enrichment:
  date: '2026-11-12'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

InvoiceHub API — frequently asked questions

Does InvoiceHub have an API?

Yes. APIs.io lists 1 API from InvoiceHub, including InvoiceHub API.

How much does the InvoiceHub API cost?

InvoiceHub publishes its prices; its Free plan is €0 as of 2026-11-12. APIs.io lists 4 pricing plans for InvoiceHub, with each plan's price, limits and inclusions under Pricing on this page.

Does InvoiceHub have an MCP server?

Yes. APIs.io lists 1 MCP server for InvoiceHub: Remote MCP server at api.invoicehub.dev requiring an API key.

Is the InvoiceHub API ready for AI agents?

InvoiceHub has a Kin Score of 30.1 out of 100 (thin) and an Agent Readiness score of 6.0 (agent-aware), scored by API Evangelist on 2026-11-13.

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get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
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apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
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find_cohortsEvery scored population of providers in the catalog.

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