Contalink

Contalink is a Mexican cloud accounting and payroll platform ("contabilidad en la nube") built for independent accountants, accounting firms (despachos) and SMEs. It automates repetitive Mexican fiscal work — bulk CFDI download and classification, electronic accounting, DIOT preparation, treasury and bank reconciliation, invoicing (facturación) and payroll (nómina) with digital stamping — across multiple companies and users. Contalink also exposes a REST API that lets external systems read and post accounting data: trial balance (balanza de comprobación), account balances, manual accounting policies (pólizas manuales), invoice reconciliation (conciliación), bank transactions (movimientos bancarios) and CFDI fiscal-document listing, upload and status checks. The API authenticates with a per-company API key sent in the Authorization header. Backed by 500 Global.

Contalink publishes 8 API contracts indexed on the APIs.io network, including Balanza de comprobación API, Cargar un documento fiscal API, Conciliación API, and 5 more. Tagged areas include Company, Accounting, Bookkeeping, Payroll, and Tax.

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

Contalink’s developer surface includes API reference, documentation, getting-started guide, support, engineering blog, pricing, signup flow, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

51.4/100 developing ▬ flat Agent 20/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract 3 Agent Skills

Company Accounting Bookkeeping Payroll Tax Fintech Invoicing CFDI Mexico Software-as-a-Service

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Financial Management

BC-200

Balanza de comprobaciónCargar un documento fiscalPólizas manualesSaldo de una cuenta

POST /accounting/manual-accounting-policy/ GET /accounting/get-account-balance/{accountnumber}/ GET /accounting/trial-balance/ POST /invoices/upload/

Treasury Management

BC-210

Movimientos bancarios

POST /treasury/bank-transactions/

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 51.4/100 · developing

Contract Quality 10.1 / 19

Developer Ergonomics 8.8 / 15

Access Clarity 11.1 / 15

Operational Transparency 1.8 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 3.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 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 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 Employment & Payroll 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/.

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<a href="https://apis.io/providers/contalink/"><img src="https://apis.io/badge/contalink/card.svg" alt="Contalink on APIs.io — Kin Score by API Evangelist"></a>

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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
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

9 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 53.8 — up to +11.6 composite points
Operational Transparency scores 18.4 — up to +10.6 composite points
Contract Governance scores 18.2 — up to +9.8 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/contalink/apis.yml: open an issue on github.com/api-evangelist/contalink 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
E-invoicing and Tax Compliance (certified operators)	long-tail	2.5 (thin)	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 8

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

Contalink Balanza de comprobación API

Obtiene la balanza de comprobación según los parámetros enviados

Contalink Cargar un documento fiscal API

Carga un documento fiscal al sistema

Contalink Conciliación API

Realiza la conciliación por medio del UUID de la factura proporcionada.

Contalink Listado de documentos fiscales API

Obtiene un listado de los documentos fiscales que correspondan a los filtros enviados

Contalink Movimientos bancarios API

Gestiona altas y bajas de los movimientos que se dan en los bancos, tarjetas, cajas, etc.

Contalink Pólizas manuales API

Gestiona altas, bajas y cambios de las pólizas manuales.

Contalink Saldo de una cuenta API

Obtiene el saldo de una cuenta contable

Contalink Status de documentos fiscales API

Valida los status de vigencia y pago de un documento fiscal

Scroll for all 8

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Contalink Balanza de comprobación API

OPEN COLLECTION

API Contalink Balanza de comprobación Cargar un documento fiscal API

OPEN COLLECTION

API Contalink Balanza de comprobación Conciliación API

OPEN COLLECTION

API Contalink Balanza de comprobación Listado de documentos fiscales API

OPEN COLLECTION

API Contalink Balanza de comprobación Movimientos bancarios API

OPEN COLLECTION

API Contalink Balanza de comprobación Pólizas manuales API

OPEN COLLECTION

API Contalink Balanza de comprobación Saldo de una cuenta API

OPEN COLLECTION

API Contalink Balanza de comprobación Status de documentos fiscales API

OPEN COLLECTION

Scroll for all 8

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Post a manual accounting policy and check the balance

AGENT SKILL

Reconcile an invoice payment against a bank movement

AGENT SKILL

Upload a CFDI and verify its status

AGENT SKILL

Contalink API pricing

Prices published by Contalink, read 2026-10-28 from www.contalink.com/precios.

Plan	Price
Start	$590 MXN/ mes + IVA Includes: 1 usuario contador, Hasta 5 RFCs, Acceso para tus clientes incluido
Pro	$790 MXN/ mes + IVA Includes: 1 usuario contador, 10 RFCs incluidos, Acceso para tus clientes incluido
Flex	$990 MXN/ mes + IVA Includes: 1 usuario contador, 100 RFCs por cada usuario contratado

Plan details, limits and sources →

Billed by: suscripción · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Contalink Plans Pricing

3 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Contalink

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Contalink Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Contalink API Rules

60 rules · 58 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Contalink Openapi Overlay

14 actions · documentation · contalink-openapi-original.json

DERIVED

Security Posture 2

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

Contalink Authentication

apiKey · 1 scheme

SECURITY

Contalink Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Contalink Agentic Access

13 operations · 7 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

X-MCPServerCandidate

WellKnown

LLMsTxt

AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: contalink
name: Contalink
description: 'Contalink is a Mexican cloud accounting and payroll platform ("contabilidad en la nube") built for independent
  accountants, accounting firms (despachos) and SMEs. It automates repetitive Mexican fiscal work — bulk CFDI download and
  classification, electronic accounting, DIOT preparation, treasury and bank reconciliation, invoicing (facturación) and payroll
  (nómina) with digital stamping — across multiple companies and users. Contalink also exposes a REST API that lets external
  systems read and post accounting data: trial balance (balanza de comprobación), account balances, manual accounting policies
  (pólizas manuales), invoice reconciliation (conciliación), bank transactions (movimientos bancarios) and CFDI fiscal-document
  listing, upload and status checks. The API authenticates with a per-company API key sent in the Authorization header. Backed
  by 500 Global.'
url: https://raw.githubusercontent.com/api-evangelist/contalink/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
image: https://www.contalink.com/favicon.ico
x-docs-platform: redocly
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-24
tags:
- Company
- Accounting
- Bookkeeping
- Payroll
- Tax
- Fintech
- Invoicing
- CFDI
- Mexico
- Software-as-a-Service
tags_raw:
- Company
- Accounting
- Bookkeeping
- Payroll
- Tax
- Fintech
- Invoicing
- CFDI
- Mexico
- SaaS
apis:
- aid: contalink:contalink-balanza-de-comprobaci-n-api
  name: Contalink Balanza de comprobación API
  description: Obtiene la balanza de comprobación según los parámetros enviados
  humanURL: https://apidocs.contalink.com
  baseURL: https://794lol2h95.execute-api.us-east-1.amazonaws.com/prod
  tags:
  - Balanza de comprobación
  properties:
  - type: OpenAPI
    url: openapi/contalink-balanza-de-comprobaci-n-api-openapi.yml
  - type: Authentication
    url: authentication/contalink-authentication.yml
  - type: Conventions
    url: conventions/contalink-conventions.yml
  - type: DataModel
    url: data-model/contalink-data-model.yml
  - type: Conformance
    url: conformance/contalink-conformance.yml
- aid: contalink:contalink-cargar-un-documento-fiscal-api
  name: Contalink Cargar un documento fiscal API
  description: Carga un documento fiscal al sistema
  humanURL: https://apidocs.contalink.com
  baseURL: https://794lol2h95.execute-api.us-east-1.amazonaws.com/prod
  tags:
  - Cargar un documento fiscal
  properties:
  - type: OpenAPI
    url: openapi/contalink-cargar-un-documento-fiscal-api-openapi.yml
  - type: Authentication
    url: authentication/contalink-authentication.yml
  - type: Conventions
    url: conventions/contalink-conventions.yml
  - type: DataModel
    url: data-model/contalink-data-model.yml
  - type: Conformance
    url: conformance/contalink-conformance.yml
- aid: contalink:contalink-conciliaci-n-api
  name: Contalink Conciliación API
  description: Realiza la conciliación por medio del UUID de la factura proporcionada.
  humanURL: https://apidocs.contalink.com
  baseURL: https://794lol2h95.execute-api.us-east-1.amazonaws.com/prod
  tags:
  - Conciliación
  properties:
  - type: OpenAPI
    url: openapi/contalink-conciliaci-n-api-openapi.yml
  - type: Authentication
    url: authentication/contalink-authentication.yml
  - type: Conventions
    url: conventions/contalink-conventions.yml
  - type: DataModel
    url: data-model/contalink-data-model.yml
  - type: Conformance
    url: conformance/contalink-conformance.yml
- aid: contalink:contalink-listado-de-documentos-fiscales-api
  name: Contalink Listado de documentos fiscales API
  description: Obtiene un listado de los documentos fiscales que correspondan a los filtros enviados
  humanURL: https://apidocs.contalink.com
  baseURL: https://794lol2h95.execute-api.us-east-1.amazonaws.com/prod
  tags:
  - Listado de documentos fiscales
  properties:
  - type: OpenAPI
    url: openapi/contalink-listado-de-documentos-fiscales-api-openapi.yml
  - type: Authentication
    url: authentication/contalink-authentication.yml
  - type: Conventions
    url: conventions/contalink-conventions.yml
  - type: DataModel
    url: data-model/contalink-data-model.yml
  - type: Conformance
    url: conformance/contalink-conformance.yml
- aid: contalink:contalink-movimientos-bancarios-api
  name: Contalink Movimientos bancarios API
  description: Gestiona altas y bajas de los movimientos que se dan en los bancos, tarjetas, cajas, etc.
  humanURL: https://apidocs.contalink.com
  baseURL: https://794lol2h95.execute-api.us-east-1.amazonaws.com/prod
  tags:
  - Movimientos bancarios
  properties:
  - type: OpenAPI
    url: openapi/contalink-movimientos-bancarios-api-openapi.yml
  - type: Authentication
    url: authentication/contalink-authentication.yml
  - type: Conventions
    url: conventions/contalink-conventions.yml
  - type: DataModel
    url: data-model/contalink-data-model.yml
  - type: Conformance
    url: conformance/contalink-conformance.yml
- aid: contalink:contalink-p-lizas-manuales-api
  name: Contalink Pólizas manuales API
  description: Gestiona altas, bajas y cambios de las pólizas manuales.
  humanURL: https://apidocs.contalink.com
  baseURL: https://794lol2h95.execute-api.us-east-1.amazonaws.com/prod
  tags:
  - Pólizas manuales
  properties:
  - type: OpenAPI
    url: openapi/contalink-p-lizas-manuales-api-openapi.yml
  - type: Authentication
    url: authentication/contalink-authentication.yml
  - type: Conventions
    url: conventions/contalink-conventions.yml
  - type: DataModel
    url: data-model/contalink-data-model.yml
  - type: Conformance
    url: conformance/contalink-conformance.yml
- aid: contalink:contalink-saldo-de-una-cuenta-api
  name: Contalink Saldo de una cuenta API
  description: Obtiene el saldo de una cuenta contable
  humanURL: https://apidocs.contalink.com
  baseURL: https://794lol2h95.execute-api.us-east-1.amazonaws.com/prod
  tags:
  - Saldo de una cuenta
  properties:
  - type: OpenAPI
    url: openapi/contalink-saldo-de-una-cuenta-api-openapi.yml
  - type: Authentication
    url: authentication/contalink-authentication.yml
  - type: Conventions
    url: conventions/contalink-conventions.yml
  - type: DataModel
    url: data-model/contalink-data-model.yml
  - type: Conformance
    url: conformance/contalink-conformance.yml
- aid: contalink:contalink-status-de-documentos-fiscales-api
  name: Contalink Status de documentos fiscales API
  description: Valida los status de vigencia y pago de un documento fiscal
  humanURL: https://apidocs.contalink.com
  baseURL: https://794lol2h95.execute-api.us-east-1.amazonaws.com/prod
  tags:
  - Status de documentos fiscales
  properties:
  - type: OpenAPI
    url: openapi/contalink-status-de-documentos-fiscales-api-openapi.yml
  - type: Authentication
    url: authentication/contalink-authentication.yml
  - type: Conventions
    url: conventions/contalink-conventions.yml
  - type: DataModel
    url: data-model/contalink-data-model.yml
  - type: Conformance
    url: conformance/contalink-conformance.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/contalink-plans-pricing.yml
- type: CapabilityMap
  url: capabilities/contalink-capability-edges.yml
  name: Contalink Business Capability Map
- type: AgentSkill
  url: skills/contalink-post-manual-policy.md
- type: X-MCPServerCandidate
  url: mcp/contalink-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: Overlay
  url: overlays/contalink-openapi-overlay.yaml
- type: Website
  url: https://contalink.com
- type: DeveloperPortal
  url: https://apidocs.contalink.com
- type: APIReference
  url: https://apidocs.contalink.com
- type: Documentation
  url: https://tutoriales.contalink.com/es/
- type: GettingStarted
  url: https://tutoriales.contalink.com/es/articles/8569647-configuracion-api
- type: Support
  url: https://tutoriales.contalink.com/es/
- type: Blog
  url: https://www.contalink.com/blog
- type: Pricing
  url: https://www.contalink.com/precios
- type: SignUp
  url: https://contalink.com/empezarahora
- type: Login
  url: https://app.contalink.com/
- type: PrivacyPolicy
  url: https://contalink.com/terms-conditions
- type: GitHubOrganization
  url: https://github.com/Contalink
- type: StatusPage
  url: https://estatus.contalink.com/
- type: Lifecycle
  url: lifecycle/contalink-lifecycle.yml
- type: WellKnown
  url: well-known/contalink-well-known.yml
- type: DomainSecurity
  url: security/contalink-domain-security.yml
- type: LLMsTxt
  url: llms/contalink-llms.txt
- type: AgenticAccess
  url: agentic-access/contalink-agentic-access.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Contalink API — frequently asked questions

Does Contalink have an API?

Yes. APIs.io lists 8 APIs from Contalink, including Contalink Balanza de comprobación API, Contalink Cargar un documento fiscal API and Contalink Conciliación API, and 5 more.

Is there an OpenAPI specification for the Contalink API?

Yes. APIs.io indexes 8 OpenAPI specifications for Contalink, each linked for download from this page.

How do I authenticate with the Contalink API?

Contalink uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Contalink Authentication.

How much does the Contalink API cost?

Contalink publishes its prices; its Start plan is $590 MXN/ mes + IVA as of 2026-10-28. APIs.io lists 3 pricing plans for Contalink, with each plan's price, limits and inclusions under Pricing on this page.

Is the Contalink API ready for AI agents?

Contalink has a Kin Score of 51.4 out of 100 (developing) and an Agent Readiness score of 19.9 (agent-aware), scored by API Evangelist on 2026-11-06.

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