beel_validate_nif

es.beel/mcp · Verify this server

Checks a NIF or CIF against the AEAT register through VeriFactu and returns what the register says about it. It only reads the register: it creates nothing and stores no customer. - **`status`:** distinguishes a NIF found in the register from one that is syntactically correct but absent, and from a check that could not be completed because VeriFactu was unavailable — in which case the NIF is validated automatically once the service is back. - **`valid: true`:** means different things by holder. For an individual, AEAT matched NIF and name together. For a legal entity the name you sent is **not verified** at all — AEAT identifies a company by its CIF alone — so it says nothing about your name. - **`legal_name_verified`:** tells those two cases apart. - **`census_status`:** says whether an identified NIF is also deregistered or revoked. ## Invalid input - **Bad syntax is an answer, not an error:** it comes back `200` with `status: INVALID`, so a pre-validation flow never has to tell rejections apart by status code. - **A missing NIF is an error:** an absent or empty `nif` answers `422` `FIELD_BLANK`, with `details.field` naming it. Endpoint: POST /v1/nif/validate ⚠️ Fiscal guardrails — read before calling: - Why a name that does not match the census makes an invoice unsubmittable. (resource: beel://guardrails/nif-validation) For the exhaustive rules and worked examples, call beel_docs_search.