contix-es

Contix is a Spanish SaaS platform offering all‑in‑one invoicing for freelancers, self‑employed professionals and small companies. It integrates the Verifactu anti‑fraud standard, supports automatic generation of Spanish tax models (303, 130, 390, 349, 347, 202), expense tracking with AI‑powered OCR, CSV bank import, and connects to AI assistants like ChatGPT, Claude or Cursor via an integrated MCP server. Pricing is €12 per month plus VAT with a 30‑day free trial and no hidden fees.

contix-es publishes 1 API contract indexed on the APIs.io network: Contix API. Tagged areas include Invoicing, Accounting, SaaS, Spain, and FinTech.

The contix-es catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

contix-es’ developer surface includes authentication, signup flow, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

36.2/100 thin Agent 41/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract

Invoicing AccountingSaaSSpainFinTechAutomation

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 36.2/100 · thin

Contract Quality 9.8 / 21

Developer Ergonomics 4.7 / 17

Access Clarity 5.8 / 17

Operational Transparency 2.3 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 41/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

4 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 27.9 — up to +14.4 composite points
Contract Quality scores 46.1 — up to +13.5 composite points
Access Clarity scores 34.2 — up to +13.2 composite points

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.

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/contix-es/apis.yml: open an issue on github.com/api-evangelist/contix-es 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 →

APIs 1

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

Contix API

Spanish invoicing API with Verifactu compliance (RD 1007/2023): customers, invoices with chained hash and QR, expenses, recurring invoices, Facturae/FACe and Modelo 303/349/390 ...

Pricing Plans 1

Published pricing tiers and plan structures.

Contix Es Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Contix Es Rate Limits

1 limits

RATE LIMITS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Contix Es Context

118 classes · 288 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

contix-es API Rules

15 rules · 9 errors 3 warnings 3 info

SPECTRAL

Security Posture 2

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

Contix Es Authentication

1 scheme

SECURITY

Contix Es Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

DeveloperPortal

DeveloperPortal

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Conformance

DataModel

ErrorCatalog

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 1

Pricing, plans, and the legal terms of use

Plans

Plans

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: contix-es
name: contix-es
description: Contix is a Spanish SaaS platform offering all‑in‑one invoicing for freelancers, self‑employed professionals
  and small companies. It integrates the Verifactu anti‑fraud standard, supports automatic generation of Spanish tax models
  (303, 130, 390, 349, 347, 202), expense tracking with AI‑powered OCR, CSV bank import, and connects to AI assistants like
  ChatGPT, Claude or Cursor via an integrated MCP server. Pricing is €12 per month plus VAT with a 30‑day free trial and no
  hidden fees.
url: https://artifacts.apis.io/contix-es/apis.yml
image: https://contix.es/brand/contix-icon-dark-512.png
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-30'
tags:
- Invoicing
- Accounting
- SaaS
- Spain
- FinTech
- Automation
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/contix-es-rules.yml
- type: JSONLD
  url: json-ld/contix-es-context.jsonld
- type: Vocabulary
  url: vocabulary/contix-es-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Conformance
  url: conformance/contix-es-conformance.yml
- type: RateLimits
  url: rate-limits/contix-es-rate-limits.yml
- type: Plans
  url: plans/contix-es-plans-pricing.yml
- type: DataModel
  url: data-model/contix-es-data-model.yml
- type: Authentication
  url: authentication/contix-es-authentication.yml
- type: ErrorCatalog
  url: errors/contix-es-problem-types.yml
- type: LLMsTxt
  url: llms/contix-es-llms.txt
- type: WellKnown
  url: well-known/contix-es-well-known.yml
- type: Hosts
  url: hosts/contix-es-hosts.yml
- type: SignUp
  url: https://app.contix.es/register
- type: DomainSecurity
  url: security/contix-es-domain-security.yml
- type: Website
  url: https://contix.es/
- type: DeveloperPortal
  url: https://app.contix.es/
apis:
- name: Contix API
  description: 'Spanish invoicing API with Verifactu compliance (RD 1007/2023): customers, invoices with chained hash and
    QR, expenses, recurring invoices, Facturae/FACe and Modelo 303/349/390 figures.'
  humanURL: https://contix.es/api
  baseURL: https://api.contix.es
  aid: contix-es:contix-api
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

contix-es API — frequently asked questions

Does contix-es have an API?

Yes. APIs.io lists 1 API from contix-es, including Contix API.

Is there an OpenAPI specification for the contix-es API?

Yes. APIs.io indexes 1 OpenAPI specification for contix-es, each linked for download from this page.

How do I authenticate with the contix-es API?

contix-es documents its authentication (1 scheme). The details are profiled on APIs.io as Contix Es Authentication.

How much does the contix-es API cost?

APIs.io lists 1 pricing plan for contix-es, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the contix-es API ready for AI agents?

contix-es has a Kin Score of 36.2 out of 100 (thin) and an Agent Readiness score of 41.0 (agent-ready), scored by API Evangelist on 2026-10-31.

Work with this as data

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MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

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