GenderAPI.io provides an API to determine the gender associated with a given name, email address, or username.
GenderAPI.io provides an API to determine the gender associated with a given name, email address, or username. On Nagent, GenderAPI.io is exposed as a fully-configurable developer tools integration that any agent can call — 5 actions, and API key authentication. No code is required to wire GenderAPI.io into your workflow — connect it once via the External Integrations panel and reuse it across every agent you build.
Agent builders use GenderAPI.io 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 GenderAPI.io 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 GenderAPI.io, with input parameters and output schema. Drop these into any step of an agent built in Helix.
GENDERAPI_IO_GENDERAPI_GET_STATSTool to retrieve account usage statistics from GenderAPI.io. Use when you need to check remaining API credits and expiry.
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
GENDERAPI_IO_GENDER_API_QUERY_BY_FIRST_NAMETool to determine gender by querying first name. Use when you need to infer likely gender for a given name with optional localization hints.
Input parameters
Optional arbitrary identifier (up to 50 characters) to correlate the response.
Optional IP address (IPv4 or IPv6) to localize the query.
First name to query gender for.
Optional locale to guide gender inference.
Ask AI model when the name isn’t present in the database.
Optional ISO 3166 alpha-2 country code to localize the query.
Attempt to genderize even for non-typical names (e.g., nicknames).
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
GENDERAPI_IO_GET_GENDER_FROM_USERNAMETool to determine gender from a username or nickname. Use when you have an alias or handle and want to infer gender from that identifier.
Input parameters
If true, asks the AI model when the name is not found in the database.
Optional ISO 3166-1 alpha-2 country code to improve prediction accuracy.
Username or nickname to analyze for gender inference.
If true, attempts prediction even for usernames that don't resemble real names.
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
GENDERAPI_IO_LIST_ERROR_CODESTool to list all possible error codes returned by Gender API. Use when debugging or validating API responses.
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
GENDERAPI_IO_QUERY_BY_EMAIL_ADDRESSTool to determine gender from an email address. Use when you need to infer gender for personalization after obtaining proper consent.
Input parameters
Optional client-provided ID (max 50 characters) for tracing.
Valid IPv4 or IPv6 address for geo-hinting.
Email address to query; must be a valid email format.
Browser locale to improve name parsing (e.g., 'en', 'fr').
ISO 3166-1 alpha-2 country code to hint the endpoint (uppercase).
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 42 agents privately built on Nagent that already use GenderAPI.io.
Build on Nagent
Connect GenderAPI.io 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 GenderAPI.io, and click "Connect Now." You'll authenticate with an API key — Nagent handles credential storage and refresh automatically. Once connected, GenderAPI.io is available to any agent in your workspace.
No. Nagent provides no-code integration for every tool. Once GenderAPI.io is connected, you configure its 5 actions directly in the agent builder UI — no API calls, no boilerplate, no schema management.
Helix — Nagent's agentic agent builder — lets you drop GenderAPI.io 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 GenderAPI.io event fires, the agent kicks off automatically.
Every GenderAPI.io 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 GenderAPI.io ships with 5 pre-built developer tools actions, you can layer custom logic around them inside Helix — pre/post-processing steps, conditional branches, retries, or stitching GenderAPI.io together with other connected tools. For deeper customization, talk to our team about Nagent's Agentic AI Lab — forward-deployed engineers who build GenderAPI.io-based workflows tailored to your business.