Tools (5)

validate_phone_number
format_phone_number
list_calling_codes
get_calling_code
report_feedback

validate_phone_number

Validate and parse a phone number.

Returns country, number type (mobile/landline/toll_free/premium), and formatted versions (E.164, international, national).

Parameter	Type	Required	Description
`number`	`string`	required	Phone number to validate (E.164, international, or national format, e.g. +14155551234, 00441234567890).

Request Body

{
  "number": "123456789"
}

format_phone_number

Format a phone number in the specified style.

Returns the number formatted as E.164 (+1234567890), international (+1 234 567 890), or national (0234 567 890).

Parameter	Type	Required	Description
`number`	`string`	required	Phone number to format.
`fmt`	`string`	optional	Output format: e164, international, or national. (default: "e164")

Request Body

{
  "number": "123456789"
}

list_calling_codes

List all known country calling codes with metadata.

Returns calling code, country name, trunk prefix, number length ranges, and example numbers for ~50 countries.

Request Body

{
  "query": "example"
}

get_calling_code

Get calling code details for a specific country.

Returns calling code, trunk prefix, number length, example numbers, and known prefix patterns for mobile/landline.

Parameter	Type	Required	Description
`country_code`	`string`	required	ISO 3166-1 alpha-2 country code (e.g. US, GB, NO, DE).

Request Body

{
  "country_code": "NO"
}

report_feedback

Report a bug, feature request, or general feedback for this data source.

Use this when something doesn't work as expected, when you'd like
a new feature, or when you have suggestions for improvement.

Args:
feedback: Describe the issue or suggestion.
feedback_type: One of 'bug', 'feature_request', or 'general'.

Parameter	Type	Required	Description
`feedback`	`string`	required
`feedback_type`	`string`	optional	(default: "general")

Request Body

{
  "feedback": "example"
}

Quick Start

Shell

curl -X POST "https://context.gnist.ai/rest/phone-validation/validate_phone_number" \
  -H "Content-Type: application/json" \
  -H "Gnist-API-Key: YOUR_API_KEY" \
  -d '{"number": "example"}'

Python

import httpx

resp = httpx.post(
    "https://context.gnist.ai/rest/phone-validation/validate_phone_number",
    headers={"Gnist-API-Key": "YOUR_API_KEY"},
    json={
  "number": "example"
},
)
print(resp.json())