Tools (4)

lookup_postal_code
search_by_place
list_supported_countries
report_feedback

lookup_postal_code

Look up location details for a postal/ZIP code — city, state, country, and coordinates.

Supports 70+ countries including US, UK, Norway, Germany, France, Japan, and more.

Parameter	Type	Required	Description
`country_code`	`string`	required	ISO 3166-1 alpha-2 country code (e.g. 'US', 'NO', 'DE').
`postal_code`	`string`	required	Postal or ZIP code to look up (e.g. '90210', '0150').

Request Body

{
  "country_code": "NO",
  "postal_code": "example"
}

search_by_place

Find postal codes for a city within a country and state.

Useful for reverse lookup — find postal codes when you know the place name.

Parameter	Type	Required	Description
`country_code`	`string`	required	ISO 3166-1 alpha-2 country code (e.g. 'US', 'DE').
`state`	`string`	required	State or province name (e.g. 'California', 'Bayern').
`city`	`string`	required	City or place name (e.g. 'Los Angeles', 'München').

Request Body

{
  "country_code": "NO",
  "state": "example",
  "city": "example"
}

list_supported_countries

List all countries supported for postal code lookup.

Returns ISO country codes and names for all 70+ supported countries.

Request Body

{
  "query": "example"
}

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/postal-codes/lookup_postal_code" \
  -H "Content-Type: application/json" \
  -H "Gnist-API-Key: YOUR_API_KEY" \
  -d '{"country_code": "example", "postal_code": "example"}'

Python

import httpx

resp = httpx.post(
    "https://context.gnist.ai/rest/postal-codes/lookup_postal_code",
    headers={"Gnist-API-Key": "YOUR_API_KEY"},
    json={
  "country_code": "example",
  "postal_code": "example"
},
)
print(resp.json())