# Gender API AI integration on Definable

> Gender API determines the gender of a first name, email address, or username.

## What this connects

Gender API determines the gender of a first name, email address, or username.

Vendor: https://gender-api.com/en/signup

## Tools available

**9** tools available. First 9:

- `GENDER_API_GET_COUNTRY_OF_ORIGIN` — Get Country of Origin — Tool to retrieve a name's likely countries of origin. Use after confirming the name identifier.
- `GENDER_API_GET_COUNTRY_OF_ORIGIN_V1` — Get Country of Origin (v1) — Tool to get the country of origin for a given first name using v1 API. Returns the most likely country where the name is most common.
- `GENDER_API_GET_STATISTIC` — Get Gender API Statistics — Tool to retrieve account statistics from Gender-API, including remaining credits and usage details. Use when you need to check your credit balance before performing further gender lookups.
- `GENDER_API_QUERY_BY_EMAIL_ADDRESS` — Query Gender by Email Address — Determine likely gender from an email address by extracting and analyzing the name portion. Returns male/female/unknown with a confidence score. Optionally filter by country for improved accuracy. Check result_found to know if a determination was made; probability indicates confidence level.
- `GENDER_API_QUERY_BY_EMAIL_ADDRESS_MULTIPLE` — Query Gender by Multiple Email Addresses — Determine likely gender for multiple email addresses in a single batch request. Returns male/female/unknown with confidence scores for each email. Use for efficient bulk processing. Each result includes result_found flag and optional probability score.
- `GENDER_API_QUERY_BY_FIRST_NAME` — Gender From First Name — Tool to determine the gender of a first name. Use when you need to identify gender based on a given name.
- `GENDER_API_QUERY_BY_FULL_NAME` — Query Gender by Full Name — Tool to determine gender by splitting a full name. Use when you have an exact full name string and want to infer gender. Slightly less reliable for rare or ambiguous names.
- `GENDER_API_QUERY_GENDER_BY_FIRST_NAME_MULTIPLE` — Query Gender by Multiple First Names — Tool to determine gender for multiple first names in a single batch request. Use when you need to query gender for several names efficiently to save API credits and reduce latency.
- `GENDER_API_QUERY_GENDER_BY_FULL_NAME_MULTIPLE` — Query Gender by Full Name (Multiple) — Tool to batch query gender for multiple full names in a single request. Use when you need to determine gender for multiple names efficiently. Each name can optionally include country, locale, or IP for more accurate regional inference.

## Auth

Auth schemes: `API_KEY`.

## How agents use Gender API

Inside a Definable workflow, Gender API is one of the tools the **Distributor specialist** can call. Example coordination patterns:

- **Researcher → Gender API** — the Researcher (GPT-5.5) pulls context from Gender API (records, threads, documents), synthesises findings, and briefs the rest of the team.
- **Writer → Distributor → Gender API** — the Writer (Claude Opus 4.7) drafts copy in brand voice, the Verifier passes it, then the Distributor writes the result into Gender API (create record, post message, draft email).
- **Designer / Engineer → Distributor → Gender API** — the Designer ships an asset or the Engineer ships a code change, the Distributor delivers it via Gender API (attach file, open PR comment, post status).

The Verifier checks every Gender API call. On rate limit, schema drift, or auth refresh it self-heals and retries — the workflow completes without manual intervention.

## Categories

- developer tools — https://definable.ai/apps/category/developer-tools/
- marketing automation — https://definable.ai/apps/category/marketing-automation/

## Related

- HTML page: https://definable.ai/apps/gender_api/
- Same category (developer tools): https://definable.ai/apps/category/developer-tools/
- All integrations: https://definable.ai/apps/
- Workflow (multi-agent loop): https://definable.ai/workflow/
- Apps llms.txt index: https://definable.ai/llms-apps.txt