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POST
/
v3
/
database-validation
curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=ESP" \
  -F "services=esp_dni" \
  -F "personal_number=SAMPLE-PER-12345" \
  -F "document_type=sample_value" \
  -F "expiration_date=1990-01-01"

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "ESP",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "esp_dni",
      "service_name": "Spain - DNI/NIE verification",
      "source_data": {
        "first_name": "John",
        "identification_number": "SAMPLE-ID-12345",
        "last_name": "Doe"
      },
      "validation": {
        "identification_number": "full_match"
      }
    }
  ]
}

Documentation Index

Fetch the complete documentation index at: https://docs.didit.me/llms.txt

Use this file to discover all available pages before exploring further.

Verifies Spanish DNI / NIE against the Dirección General de la Policía records. Didit exposes this service through POST /v3/database-validation/ so you can verify the submitted data against the authoritative source and receive normalized match results.

​
Coverage

  • Coverage: —
  • Country: Spain
  • Service ID: esp_dni
  • Data domain: Identity
  • Category: NationalIDRegistry

​
Inputs

FieldRequiredExample
personal_numberYesSAMPLE-PER-12345
document_typeYessample_value
expiration_dateYes1990-01-01
first_nameNoJohn
last_nameNoDoe
  • Required inputs: personal_number, document_type, expiration_date
  • Optional inputs: first_name, last_name
  • Consent: Not required
  • Workflow availability: Available in workflow
  • Coverage: —
  • Price: $0.20 per successful query

​
Body parameters

​
issuing_state
string
required
ISO 3166-1 alpha-3 country code for this database service.Example: ESP
​
services
string
required
Array containing this service ID. Pinning the service keeps the request scoped to this exact database.Example: esp_dni
​
personal_number
string
required
Country-specific personal identity number.Example: SAMPLE-PER-12345
​
document_type
string
required
document_type value required by this database service.Example: sample_value
​
expiration_date
string
required
expiration_date value required by this database service.Example: 1990-01-01
​
first_name
string
Given name to validate.Example: John
​
last_name
string
Family name to validate.Example: Doe

​
Input rules & validation notes

  • Spanish DNI (8 digits + letter) or NIE (X/Y/Z + 7 digits + letter)
  • personal_number must be exactly 9 characters long.
  • personal_number must match ^(\d{8}[A-Za-z]|[XYZxyz]\d{7}[A-Za-z])$.

​
How to call it

curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=ESP" \
  -F "services=esp_dni" \
  -F "personal_number=SAMPLE-PER-12345" \
  -F "document_type=sample_value" \
  -F "expiration_date=1990-01-01"

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "ESP",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "esp_dni",
      "service_name": "Spain - DNI/NIE verification",
      "source_data": {
        "first_name": "John",
        "identification_number": "SAMPLE-ID-12345",
        "last_name": "Doe"
      },
      "validation": {
        "identification_number": "full_match"
      }
    }
  ]
}

​
Returned data

The exact fields surfaced in source_data depend on what the registry returns. The generated example for esp_dni currently documents this normalized shape:
  • first_name
  • identification_number
  • last_name

​
Pricing & SLAs

Spain - DNI/NIE verification queries are billed only when Didit receives a conclusive result from the validation source.
  • Per-call price: $0.20 USD.
  • Billing: per successful query. You are not charged when the registry is unreachable, when required fields are missing, or when the request is rejected before reaching the source.
  • Latency: typical p95 < 2 s.
  • Availability: 99.9% per quarter on Didit’s side; downstream source availability varies by country and dataset.

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