PostGrid Verify

Address verification API for autocomplete, US, Canada, and international addresses, postal-code lookups, and account usage.

Made for address-entry flows that autocomplete and verify domestic and international addresses, resolve city and state from a postal code, and monitor lookups used.

Example Use Cases

These are the PostGrid Verify actions Snow can use when building apps with you. Connecting an account does not make Snow run these on its own.

Autocomplete Address

Tool to autocomplete a partially specified US or Canada address. Retrieves complete verified address including full postal code. Uses 1 lookup per request.

Autocomplete International Address

Tool to retrieve complete verified international address data using an ID from the preview endpoint. Use when you have an address ID from the preview step and need the full address details.

Batch Verify Addresses with Mixed Format

Tool to verify up to 2000 US and Canada addresses in a single API call. Accepts both freeform address strings and structured address objects. Each address uses 1 lookup credit.

Batch Verify International Addresses

Tool to verify up to 2000 international addresses in a single API call. Accepts both freeform address strings and structured address objects. Uses 1 lookup per address.

Get International Autocomplete Previews

Tool to get previews of autocompleted international addresses. Results are biased based on your current IP address unless disabled. Returns both 'Address' and 'BuildingNumber' types - if type is 'Address', its id can be used in POST /completions; if 'BuildingNumber', use the container id with advanced previews.

Get Lookup Info

Tool to retrieve lookup usage information for your PostGrid account. Use when you need to check how many lookups you have used and your free lookup limit.

Lookup City and State from Postal Code

Tool to lookup city and state for a given postal or ZIP code. Use when you need valid city/state combinations for a postal code.

Parse Address

Tool to break an address apart into its components. Use when you need to extract individual address parts like street number, road, city, state, and postal code from a single-line address string.

Suggest Addresses

Tool to find addresses similar to the given address. If the address can be verified or corrected, the first element will contain the verified address. Returns unit number ranges in line1 of suggested addresses. Use when you need address suggestions or corrections for US or Canadian addresses.

Verify Address

Tool to verify and standardize a US or Canadian address. Supports both freeform addresses (single-line) and structured addresses (with separate line1, city, etc.). Use includeDetails=true for additional metadata or geocode=true for latitude/longitude.