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Spain Verifactu Readiness Guide

Dated guide to Spain's billing-software rules (Reglamento SIF, VERI*FACTU): which deadline applies to which taxpayer, the two modes, a vendor question list and the legal basis, each sourced

Unify Dynamics LLC

Documentation
Tools5read-only
Sign-inNoneno account, no key
Data keptNoneprocessed in memory
PriceFreeoptional Pro limits
StatusLiveMCP + REST
Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

My company files corporate income tax in Spain and uses invoicing software: by when does the software have to comply with the Verifactu rules?
Tools called
which_deadline_applies
I am an autonomo in Spain: which Verifactu deadline is mine and how many days are left?
Tools called
which_deadline_applies
What is the difference between VERI*FACTU and NO VERI*FACTU mode, and does an invoice need a QR code in both?
Tools called
explain_modes
Give me the questions I should put to my invoicing software vendor about Verifactu readiness.
Tools called
software_readiness_checklist
What changed with the Verifactu deadlines and which decrees do I look up?
Tools called
get_verifactu_timeline
legal_basis_links

About

Spain Verifactu Readiness Guide answers the questions a small business (or the agent working for it) asks about Spain's regulation of invoicing software, the Reglamento de los sistemas informáticos de facturación (SIF) of Real Decreto 1007/2023 and its VERI*FACTU mode. It gives the dated timeline with the status of every milestone on a chosen date, the deadline that applies to a taxpayer type (Real Decreto-ley 15/2025 of 2 December 2025 moved it to before 1 January 2027 for entities that file the corporate income tax return and before 1 July 2027 for the rest, replacing the 1 January and 1 July 2026 dates of Real Decreto 254/2025), the difference between the VERI*FACTU and NO VERI*FACTU modes with the Spanish wording of the tax agency, a question list to put to a software vendor where every question carries the sentence it rests on, and the legal instruments with their BOE identifiers. It reports what the rules and the tax agency's pages say and when; it does not decide whether a business is in scope, does not build or send invoice records and does not file anything. Independent connector, not affiliated with the Agencia Tributaria or any government body. General information only, not tax or legal advice.

Sources: Reference data from official sources (boe.es, sede.agenciatributaria.gob.es); every answer states its source, date and validity period.

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.
Privacy policyTerms

What it can do

5 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI
Look up & validate1 tools
  • Get verifactu timelineDated milestones of Spain's billing-software regime with the status of each on a chosen date and the next deadline.
Reference & guides4 tools
  • Which deadline appliesThe deadline that applies to a taxpayer type on a date, the instrument that set it, the days left and the superseded earlier dates.
  • Explain modesThe two valid modes, VERI*FACTU and NO VERI*FACTU, with the tax agency's own Spanish sentences, the QR code rule and the security elements.
  • Software readiness checklistQuestions to put to an invoicing-software vendor, each with the sentence of the AEAT page or the Real Decreto it rests on.
  • Legal basis linksThe legal instruments of the regime with date, BOE identifier, link, role and how well each was confirmed.

Information

PublisherUnify Dynamics LLC
CategoryMoney & business · Spain
LanguagesEnglish
Built forSpain
CompatibilityAny MCP client · any agent · REST
Version0.1.0
MCP endpointhttps://es-verifactu-guide.connectorbay.com/mcp
REST APIopenapi.json
SupportGet help · Status
CountrySpain
FunctionInvoicing & tax
LayerDeep connectors

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Documentation

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Spain Verifactu Readiness Guide — connector documentation

  • MCP endpoint: https://es-verifactu-guide.connectorbay.com/mcp
  • REST API: POST https://es-verifactu-guide.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://es-verifactu-guide.connectorbay.com/openapi.json
  • Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
  • Authentication: none required. An optional Authorization: Bearer <key> raises rate limits.
  • Health: https://es-verifactu-guide.connectorbay.com/health · Tool schemas: https://es-verifactu-guide.connectorbay.com/tools.json
  • Publisher: Unify Dynamics LLC · connectorbay.com/es-verifactu-guide · agent@connectorbay.com

What Spain Verifactu Readiness Guide is for

Spain Verifactu Readiness Guide answers the questions a small business (or the agent working for it) asks about Spain's regulation of invoicing software, the Reglamento de los sistemas informáticos de facturación (SIF) of Real Decreto 1007/2023 and its VERIFACTU mode. It gives the dated timeline with the status of every milestone on a chosen date, the deadline that applies to a taxpayer type (Real Decreto-ley 15/2025 of 2 December 2025 moved it to before 1 January 2027 for entities that file the corporate income tax return and before 1 July 2027 for the rest, replacing the 1 January and 1 July 2026 dates of Real Decreto 254/2025), the difference between the VERIFACTU and NO VERI*FACTU modes with the Spanish wording of the tax agency, a question list to put to a software vendor where every question carries the sentence it rests on, and the legal instruments with their BOE identifiers. It reports what the rules and the tax agency's pages say and when; it does not decide whether a business is in scope, does not build or send invoice records and does not file anything. Independent connector, not affiliated with the Agencia Tributaria or any government body. General information only, not tax or legal advice.

Ask your assistant things like:

  • "My company files corporate income tax in Spain and uses invoicing software: by when does the software have to comply with the Verifactu rules?"
  • "I am an autonomo in Spain: which Verifactu deadline is mine and how many days are left?"
  • "What is the difference between VERIFACTU and NO VERIFACTU mode, and does an invoice need a QR code in both?"
  • "Give me the questions I should put to my invoicing software vendor about Verifactu readiness."
  • "What changed with the Verifactu deadlines and which decrees do I look up?"

What it does

  • get_verifactu_timeline: Dated milestones of Spain's billing-software regime with the status of each on a chosen date and the next milestone.
  • which_deadline_applies: The deadline that applies to a taxpayer type on a date, the instrument that set it and the days left, with the superseded earlier dates.
  • explain_modes: The two valid modes, VERIFACTU and NO VERIFACTU, with the tax agency's own Spanish sentences, the QR code and the security elements.
  • software_readiness_checklist: Questions to put to an invoicing-software vendor, each with the sentence of the AEAT page or the Real Decreto it rests on.
  • legal_basis_links: The legal instruments of the regime with date, BOE identifier, link, role and how well each was confirmed.

Data sources

Reference data from official sources (boe.es, sede.agenciatributaria.gob.es); every answer states its source, date and validity period.

What it is not

Spain Verifactu Readiness Guide is independent; not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Names of rails, schemes and standards are used only to say what a tool works with. It is read-only: it never sends, pays, files or signs anything for you, and it never looks up private individuals.

Not advice. General information only, not legal, tax, accounting or payment advice. Spain Verifactu Readiness Guide is an independent tool: it is not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Rates, thresholds and rules change; check the cited official source and confirm with a qualified professional before you rely on a result.

Built for: Spain. Languages: English.

Tools

Look up & validate

get_verifactu_timeline — Dated milestones of Spain's billing-software regime with the status of each on a chosen date and the next deadline. Use for "What changed with the Verifactu deadlines and what is the next milestone?". Args: on_date.

Reference & guides

which_deadline_applies — The deadline that applies to a taxpayer type on a date, the instrument that set it, the days left and the superseded earlier dates. Use for "My company files corporate income tax in Spain: by when must its invoicing software comply with Verifactu?". Args: taxpayer_type, on_date.

explain_modes — The two valid modes, VERIFACTU and NO VERIFACTU, with the tax agency's own Spanish sentences, the QR code rule and the security elements. Use for "What is the difference between VERIFACTU and NO VERIFACTU mode?".

software_readiness_checklist — Questions to put to an invoicing-software vendor, each with the sentence of the AEAT page or the Real Decreto it rests on. Use for "Give me the questions to ask my invoicing software vendor about Verifactu readiness". Args: mode.

legal_basis_links — The legal instruments of the regime with date, BOE identifier, link, role and how well each was confirmed. Use for "Which decrees and orders form the legal basis of Verifactu and where do I read them?".

Conventions

  • Read-only. Every tool reads public data or computes; nothing is written anywhere and nothing about the user is stored.
  • Result envelope. ok: true with data, or ok: false with a structured error (bad_input, not_found, upstream_error). degraded lists optional sources that were unreachable.
  • Rate limits. Free tier 60 tool calls/minute and 300/day per user (keyed on the user identifier supplied by the host agent, else client IP); Pro keys raise this. Over-limit calls return HTTP 429 with Retry-After. initialize and tools/list are never counted.

Support

agent@connectorbay.com · connectorbay.com/es-verifactu-guide/support

Privacy policy

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Spain Verifactu Readiness Guide — Privacy Policy

Effective 29 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Spain Verifactu Readiness Guide is. Spain Verifactu Readiness Guide is a connector (an MCP server and REST API) that AI assistants call on your behalf: Dated guide to Spain's billing-software rules (Reglamento SIF, VERI*FACTU): which deadline applies to which taxpayer, the two modes, a vendor question list and the legal basis, each sourced. You talk to your assistant; the assistant sends us only the arguments needed for that one request.

What we receive. The arguments of each tool call, the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant, and a Pro API key if you have one), and standard server logs.

Nothing is stored. Every tool is a local calculation or a lookup against bundled reference data; no request is forwarded to any third party. Arguments are used for that one response and are not logged in request bodies, recorded, or used to train anything.

What we do not receive or store. We do not receive your conversation with the assistant, your name, contacts or account credentials, and we build no profile: each request is answered independently. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting access logs (IP addresses and request paths, not request bodies) are kept for up to 30 days for security and abuse prevention.

Sub-processors. None. Hosting: Vercel (United States regions).

Your rights. Because we store no personal data beyond short-lived logs, requests to access, correct or delete data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. We do not sell or share personal information.

Children. Spain Verifactu Readiness Guide is a general-audience service operated by the adult using the assistant.

Changes. We will post changes here with a new effective date.

Terms of service

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Spain Verifactu Readiness Guide — Terms of Service

Effective 29 September 2026. These terms govern use of the Spain Verifactu Readiness Guide connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

  1. The Service. Spain Verifactu Readiness Guide provides: Dated guide to Spain's billing-software rules (Reglamento SIF, VERI*FACTU): which deadline applies to which taxpayer, the two modes, a vendor question list and the legal basis, each sourced. It is accessed through an AI assistant or directly over MCP or HTTP, and is read-only.
  2. General information, not professional advice. Output is general information and a drafting aid. It is not legal, tax, accounting, financial or payment advice, and it is not a filing or a payment instruction. General information only, not legal, tax, accounting or payment advice. Spain Verifactu Readiness Guide is an independent tool: it is not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Rates, thresholds and rules change; check the cited official source and confirm with a qualified professional before you rely on a result.
  3. Independent. Spain Verifactu Readiness Guide is independent; not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Official names are used only to describe what a tool works with.
  4. Sources and dates. Reference values state their source, date and validity period. Rules change: check the cited official source before you rely on a result.
  5. Acceptable use. Automated use within the published rate limits is welcome. Do not use the Service to look up private individuals or to circumvent any authority's controls.
  6. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time.
  7. Data. Our Privacy Policy describes what we process. In short: your input is answered on our server and nothing is stored.
  8. Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder and may be revoked for abuse.
  9. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss arising from use of or reliance on the Service. Our total liability is limited to US $100.
  10. Governing law. California law; venue in San Mateo County, California.
  11. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/es-verifactu-guide

Support

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Spain Verifactu Readiness Guide support

Email agent@connectorbay.com. We answer within two business days.

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. Spain Verifactu Readiness Guide never asks for them.

Get Spain Verifactu Readiness Guide

Free · No sign-in · Read-only

Streamable HTTP, stateless, no authentication. Paste the endpoint into any MCP-capable agent.

https://es-verifactu-guide.connectorbay.com/mcp
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    "es-verifactu-guide": {
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}