India Aadhaar (UIDAI) - Didit Documentation

curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=IND" \
  -F "services=ind_aadhaar" \
  -F "vendor_data=user-1234" \
  -F "consent=true" \
  -F "full_name=John Doe" \
  -F "date_of_birth=1990-01-01" \
  -F "personal_number=111111111111" \
  -F "pan=ABCDE1234F"

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "IND",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "ind_aadhaar",
      "service_name": "India Aadhaar (UIDAI)",
      "source_data": {
        "date_of_birth": "1990-01-01",
        "full_name": "John Doe",
        "identification_number": "SAMPLE-ID-12345"
      },
      "validation": {
        "date_of_birth": "full_match",
        "full_name": "full_match",
        "identification_number": "full_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "In Review",
  "issuing_state": "IND",
  "match_type": "partial_match",
  "validations": [
    {
      "outcome_code": "PARTIAL_MATCH",
      "service_id": "ind_aadhaar",
      "service_name": "India Aadhaar (UIDAI)",
      "source_data": {
        "date_of_birth": "1990-01-01",
        "full_name": "John Doe",
        "identification_number": "SAMPLE-ID-12345"
      },
      "validation": {
        "date_of_birth": "full_match",
        "full_name": "no_match",
        "identification_number": "full_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "IND",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "NO_MATCH",
      "service_id": "ind_aadhaar",
      "service_name": "India Aadhaar (UIDAI)",
      "source_data": {
        "date_of_birth": "NO_MATCH",
        "full_name": "NO_MATCH",
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "date_of_birth": "no_match",
        "full_name": "no_match",
        "identification_number": "no_match"
      }
    }
  ]
}

POST

database-validation

curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=IND" \
  -F "services=ind_aadhaar" \
  -F "vendor_data=user-1234" \
  -F "consent=true" \
  -F "full_name=John Doe" \
  -F "date_of_birth=1990-01-01" \
  -F "personal_number=111111111111" \
  -F "pan=ABCDE1234F"

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "IND",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "ind_aadhaar",
      "service_name": "India Aadhaar (UIDAI)",
      "source_data": {
        "date_of_birth": "1990-01-01",
        "full_name": "John Doe",
        "identification_number": "SAMPLE-ID-12345"
      },
      "validation": {
        "date_of_birth": "full_match",
        "full_name": "full_match",
        "identification_number": "full_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "In Review",
  "issuing_state": "IND",
  "match_type": "partial_match",
  "validations": [
    {
      "outcome_code": "PARTIAL_MATCH",
      "service_id": "ind_aadhaar",
      "service_name": "India Aadhaar (UIDAI)",
      "source_data": {
        "date_of_birth": "1990-01-01",
        "full_name": "John Doe",
        "identification_number": "SAMPLE-ID-12345"
      },
      "validation": {
        "date_of_birth": "full_match",
        "full_name": "no_match",
        "identification_number": "full_match"
      }
    }
  ]
}

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "IND",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "NO_MATCH",
      "service_id": "ind_aadhaar",
      "service_name": "India Aadhaar (UIDAI)",
      "source_data": {
        "date_of_birth": "NO_MATCH",
        "full_name": "NO_MATCH",
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "date_of_birth": "no_match",
        "full_name": "no_match",
        "identification_number": "no_match"
      }
    }
  ]
}

Verifies the input Aadhaar number against UIDAI identity 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: ~ 100%
Country: India
Service ID: ind_aadhaar
Data domain: Identity
Category: NationalIDRegistry

Inputs

Field	Required	Example
`full_name`	Yes	`John Doe`
`date_of_birth`	Yes	`1990-01-01`
`personal_number`	Yes	`111111111111`
`pan`	Yes	`ABCDE1234F`
`vendor_data`	No	`user-1234`

Required inputs: full_name, date_of_birth, personal_number, pan
Optional inputs: vendor_data
Consent: Required
Workflow availability: Available in workflow
Coverage: ~ 100%
Price: $0.25 per successful query

Not every document this service accepts carries the identifier it queries by. When the identifier is not extracted from the document the check is recorded as not applicable - no database is queried and you are not charged - which for some countries is a large share of real users. To cover them, also collect the identifier from a Questionnaire answer, a Document AI extraction field, or a value you send when you create the session, and map it on the Database Validation step.

Body parameters

string

default:"IND"

required

ISO 3166-1 alpha-3 country code for this database service.Example: IND

string

default:"ind_aadhaar"

required

Array containing this service ID. Pinning the service keeps the request scoped to this exact database.Example: ind_aadhaar

Explicit end-user consent for this service.Example: true

string

default:"John Doe"

required

Full legal name to validate.Example: John Doe

string

default:"1990-01-01"

required

Date of birth in YYYY-MM-DD format.Example: 1990-01-01

string

default:"111111111111"

required

Country-specific personal identity number.Example: 111111111111

string

default:"ABCDE1234F"

required

Permanent Account Number.Example: ABCDE1234F

string

default:"user-1234"

Your stable user reference for this person, such as your internal user ID. Didit uses it to link standalone checks to the same end user and reduce duplicate-detection noise.Example: user-1234

Input rules & validation notes

pan must use uppercase letters.
pan must match [A-Z]{5}\d{4}[A-Z].
personal_number must contain digits only; remove spaces, hyphens, and punctuation before sending the request.
personal_number must be exactly 12 characters long.

How to call it

curl -X POST "https://verification.didit.me/v3/database-validation/" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "issuing_state=IND" \
  -F "services=ind_aadhaar" \
  -F "vendor_data=user-1234" \
  -F "consent=true" \
  -F "full_name=John Doe" \
  -F "date_of_birth=1990-01-01" \
  -F "personal_number=111111111111" \
  -F "pan=ABCDE1234F"

Every successful call returns HTTP 200. The outcome_code field tells you what actually happened — distinguishing, for example, a real biometric mismatch (BIOMETRIC_NO_MATCH) from a selfie that could not be read (BIOMETRIC_IMAGE_UNUSABLE). The status shown is the default feature status; your configured Partial Match / No Match actions can override it.

MATCH — The registry confirmed the identity and every checked field matched.

{
  "request_id": "req_01H…",
  "status": "Approved",
  "issuing_state": "IND",
  "match_type": "full_match",
  "validations": [
    {
      "outcome_code": "MATCH",
      "service_id": "ind_aadhaar",
      "service_name": "India Aadhaar (UIDAI)",
      "source_data": {
        "date_of_birth": "1990-01-01",
        "full_name": "John Doe",
        "identification_number": "SAMPLE-ID-12345"
      },
      "validation": {
        "date_of_birth": "full_match",
        "full_name": "full_match",
        "identification_number": "full_match"
      }
    }
  ]
}

PARTIAL_MATCH — The identification number was found but one or more personal fields (usually name or date of birth) did not fully match.

{
  "request_id": "req_01H…",
  "status": "In Review",
  "issuing_state": "IND",
  "match_type": "partial_match",
  "validations": [
    {
      "outcome_code": "PARTIAL_MATCH",
      "service_id": "ind_aadhaar",
      "service_name": "India Aadhaar (UIDAI)",
      "source_data": {
        "date_of_birth": "1990-01-01",
        "full_name": "John Doe",
        "identification_number": "SAMPLE-ID-12345"
      },
      "validation": {
        "date_of_birth": "full_match",
        "full_name": "no_match",
        "identification_number": "full_match"
      }
    }
  ]
}

NO_MATCH — The registry returned no match for the submitted data.

{
  "request_id": "req_01H…",
  "status": "Declined",
  "issuing_state": "IND",
  "match_type": "no_match",
  "validations": [
    {
      "outcome_code": "NO_MATCH",
      "service_id": "ind_aadhaar",
      "service_name": "India Aadhaar (UIDAI)",
      "source_data": {
        "date_of_birth": "NO_MATCH",
        "full_name": "NO_MATCH",
        "identification_number": "NO_MATCH"
      },
      "validation": {
        "date_of_birth": "no_match",
        "full_name": "no_match",
        "identification_number": "no_match"
      }
    }
  ]
}

Returned data

The exact fields surfaced in source_data depend on what the registry returns. The generated example for ind_aadhaar currently documents this normalized shape:

date_of_birth
full_name
identification_number

Pricing & SLAs

India Aadhaar (UIDAI) queries are billed only when Didit receives a conclusive result from the validation source.

Per-call price: $0.25 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.

​Coverage

​Inputs

​Body parameters

​Input rules & validation notes

​How to call it

​Returned data

​Pricing & SLAs

​Continue reading

Coverage

Inputs

Body parameters

Input rules & validation notes

How to call it

Returned data

Pricing & SLAs

Continue reading