AddressZen provides address autocomplete and verification services, offering real-time address suggestions and validation to ensure accurate and deliverable addresses.
AddressZen provides address autocomplete and verification services, offering real-time address suggestions and validation to ensure accurate and deliverable addresses. On Nagent, Addresszen is exposed as a fully-configurable developer tools integration that any agent can call — 2 actions, and API key authentication. No code is required to wire Addresszen into your workflow — connect it once via the External Integrations panel and reuse it across every agent you build.
Agent builders use Addresszen to automate the kinds of tasks developer tools teams previously handled manually. Concrete examples — each one is a single agent step in Nagent — include:
Every action and trigger is paired with a structured input/output schema (visible in the sections below), so when you wire Addresszen into Helix — our agentic agent builder — the editor knows exactly what each step expects and produces. Configure once, deploy anywhere across your Nagent agents.
Every operation an agent can call against Addresszen, with input parameters and output schema. Drop these into any step of an agent built in Helix.
ADDRESSZEN_KEY_AVAILABILITYTool to get public information on an API key, including whether it is currently usable. Use when you need to verify that a key is valid and available before making further API requests.
Input parameters
API key to check (starts with 'ak_' or 'sl_').
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
ADDRESSZEN_RESOLVE_ADDRESS_USATool to resolve an address autocompletion by its address ID and return the full address in US format. Use after obtaining an address suggestion ID from the autocomplete endpoint.
Input parameters
Address suggestion ID returned by the autocomplete endpoint. Format: 'usps_<key>\\ | <primary>\\ | <secondary>\\ | <plus4>' (e.g., 'usps_V206542209\\|1600\\|\\|0005')
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
No publicly available marketplace agent is found using this tool yet. There are 95 agents privately built on Nagent that already use Addresszen.
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Connect Addresszen to any Nagent agent in minutes — no API key management, no boilerplate. Just configure and deploy.
The five questions agent builders ask before adopting a new integration.
Open the External Integrations panel inside Nagent (app.nagent.ai/externalIntegration), find Addresszen, and click "Connect Now." You'll authenticate with an API key — Nagent handles credential storage and refresh automatically. Once connected, Addresszen is available to any agent in your workspace.
No. Nagent provides no-code integration for every tool. Once Addresszen is connected, you configure its 2 actions directly in the agent builder UI — no API calls, no boilerplate, no schema management.
Helix — Nagent's agentic agent builder — lets you drop Addresszen steps into any workflow visually. Pick an action (e.g., one of those listed above), fill in the inputs (Helix knows the required vs. optional schema for each parameter), and connect it to upstream/downstream steps. Triggers run as the entry point of an agent, so when a Addresszen event fires, the agent kicks off automatically.
Every Addresszen action and trigger ships with a fully-typed schema — input parameters with name, type, required flag, and description, plus the output payload shape. The schemas are documented in the sections above. Helix uses these schemas to validate your configuration at build time and to type-check the data flowing between steps.
Yes. While Addresszen ships with 2 pre-built developer tools actions, you can layer custom logic around them inside Helix — pre/post-processing steps, conditional branches, retries, or stitching Addresszen together with other connected tools. For deeper customization, talk to our team about Nagent's Agentic AI Lab — forward-deployed engineers who build Addresszen-based workflows tailored to your business.