NameGender

NameGender provides a gender detection API that returns gender, probability, and supporting evidence for first names, full names, emails, or usernames. It supports multiple languages and countries, offers a free tier with 100 daily credits, and includes detailed documentation, pricing, client libraries, and research resources.

NameGender publishes 4 API contracts indexed on the APIs.io network, including Account API, Batches API, Gender API, and 1 more. Tagged areas include Gender, Names, Data Enrichment, API, and Demographics.

The NameGender catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

NameGender’s developer surface includes CLI, changelog, support, documentation, API reference, getting-started guide, pricing, and 28 more developer resources.

🌐 Visit website 📡 Source on GitHub
64.9/100 strong Agent 37/100 agent ready Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0
1 published contract
GenderNamesData EnrichmentAPIDemographicsBulk

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0
Composite quality — 64.9/100 · strong
Contract Quality 14.0 / 21
Developer Ergonomics 8.5 / 17
Access Clarity 12.4 / 17
Operational Transparency 6.4 / 11
Contract Governance 8.1 / 10
Discoverability 4.6 / 9
Regulatory Posture 3.7 / 15
Agent readiness — 37/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/namegender: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

NameGender Account API

Credit balance and key status.

NameGender Batches API

Upload a CSV or XLSX file and download it back with gender columns added.

NameGender Gender API

Name, email and username lookups.

NameGender Webhooks API

Requests NameGender sends to your server when a file job finishes or credits run low.

Pricing Plans 1

Published pricing tiers and plan structures.

Namegender Plans Pricing

13 plans

PLANS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Namegender Webhooks

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Namegender Context

11 classes · 65 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

NameGender API Rules

18 rules · 16 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

AccountResponse

7 properties

JSON SCHEMA

BatchJob

19 properties

JSON SCHEMA

BulkRequest

7 properties

JSON SCHEMA

BulkResponse

0 properties

JSON SCHEMA

CountriesResponse

9 properties

JSON SCHEMA

SingleResponse

0 properties

JSON SCHEMA

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Namegender Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Namegender Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted
 SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Spectral
Spectral
 JSONLD
JSONLD
 Vocabulary
Vocabulary
 Idempotency
Idempotency
 Conventions
Conventions
 Conformance
Conformance
 Webhooks
Webhooks
 DataModel
DataModel
 Lifecycle
Lifecycle
 ErrorCatalog
ErrorCatalog

Scroll for all 10

Build 3

SDKs, sample code, and the tooling you integrate with

CLI
CLI
 Packages
Packages
 SDKs
SDKs

Access & Security 4

Authentication, authorization, and security posture

Security
Security
 SecurityTxt
SecurityTxt
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity

Operate 5

Status, limits, changes, and where to get help

ChangeLog
ChangeLog
 Deprecation
Deprecation
 Support
Support
 StatusPage
StatusPage
 ChangeLog
ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans
Plans
 Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

Hosts
Hosts

Source (apis.yml)

apis.yml Raw ↑ 
aid: namegender
name: NameGender
description: NameGender provides a gender detection API that returns gender, probability, and supporting evidence for first
  names, full names, emails, or usernames. It supports multiple languages and countries, offers a free tier with 100 daily
  credits, and includes detailed documentation, pricing, client libraries, and research resources.
url: https://raw.githubusercontent.com/api-evangelist/namegender/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-06 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-06'
modified: '2026-10-06'
tags:
- Gender
- Names
- Data Enrichment
- API
- Demographics
- Bulk
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/namegender-rules.yml
- type: JSONLD
  url: json-ld/namegender-context.jsonld
- type: Vocabulary
  url: vocabulary/namegender-vocabulary.yml
- type: Idempotency
  url: conventions/namegender-conventions.yml
- type: Conventions
  url: conventions/namegender-conventions.yml
- type: Conformance
  url: conformance/namegender-conformance.yml
- type: Plans
  url: plans/namegender-plans-pricing.yml
- type: Webhooks
  url: asyncapi/namegender-webhooks.yml
- type: DataModel
  url: data-model/namegender-data-model.yml
- type: CLI
  url: cli/namegender-cli.yml
- type: ChangeLog
  url: changelog/namegender-changelog.yml
- type: Security
  url: https://namegender.com/changelog#security
- type: Deprecation
  url: lifecycle/namegender-lifecycle.yml
- type: Lifecycle
  url: lifecycle/namegender-lifecycle.yml
- type: ErrorCatalog
  url: errors/namegender-problem-types.yml
- type: LLMsTxt
  url: llms/namegender-llms.txt
- type: SecurityTxt
  url: well-known/namegender-security.txt
- type: WellKnown
  url: well-known/namegender-well-known.yml
- type: Hosts
  url: hosts/namegender-hosts.yml
- type: Packages
  url: packages/namegender-packages.yml
- type: Support
  url: https://namegender.com/support
- type: StatusPage
  url: https://namegender.com/status
- type: SDKs
  url: https://namegender.com/client-libraries
- type: ChangeLog
  url: https://namegender.com/changelog
- type: VulnerabilityDisclosure
  url: security/namegender-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/namegender-domain-security.yml
- type: Website
  url: https://namegender.com/apis.json
- type: Documentation
  url: https://namegender.com/docs
- type: APIReference
  url: https://namegender.com/openapi.json
- type: GettingStarted
  url: https://namegender.com/docs#quickstart
- type: Pricing
  url: https://namegender.com/pricing
- type: SignUp
  url: https://namegender.com/register
- type: TermsOfService
  url: https://namegender.com/terms
- type: PrivacyPolicy
  url: https://namegender.com/privacy-policy
- type: Blog
  url: https://namegender.com/blog
apis:
- aid: namegender:namegender-account-api
  name: NameGender Account API
  description: Credit balance and key status.
  humanURL: https://namegender.com/docs
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/namegender-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/namegender-countries-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-batch-job-schema.json
  - type: JSONSchema
    url: json-schema/namegender-bulk-request-schema.json
  - type: JSONSchema
    url: json-schema/namegender-bulk-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-account-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-single-response-schema.json
- aid: namegender:namegender-batches-api
  name: NameGender Batches API
  description: Upload a CSV or XLSX file and download it back with gender columns added.
  humanURL: https://namegender.com/docs
  tags:
  - Batches
  properties:
  - type: OpenAPI
    url: openapi/namegender-batches-api-openapi.yml
  - type: JSONSchema
    url: json-schema/namegender-countries-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-batch-job-schema.json
  - type: JSONSchema
    url: json-schema/namegender-bulk-request-schema.json
  - type: JSONSchema
    url: json-schema/namegender-bulk-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-account-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-single-response-schema.json
- aid: namegender:namegender-gender-api
  name: NameGender Gender API
  description: Name, email and username lookups.
  humanURL: https://namegender.com/docs
  tags:
  - Gender
  properties:
  - type: OpenAPI
    url: openapi/namegender-gender-api-openapi.yml
  - type: JSONSchema
    url: json-schema/namegender-countries-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-batch-job-schema.json
  - type: JSONSchema
    url: json-schema/namegender-bulk-request-schema.json
  - type: JSONSchema
    url: json-schema/namegender-bulk-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-account-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-single-response-schema.json
- aid: namegender:namegender-webhooks-api
  name: NameGender Webhooks API
  description: Requests NameGender sends to your server when a file job finishes or credits run low.
  humanURL: https://namegender.com/docs
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/namegender-webhooks-api-openapi.yml
  - type: JSONSchema
    url: json-schema/namegender-countries-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-batch-job-schema.json
  - type: JSONSchema
    url: json-schema/namegender-bulk-request-schema.json
  - type: JSONSchema
    url: json-schema/namegender-bulk-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-account-response-schema.json
  - type: JSONSchema
    url: json-schema/namegender-single-response-schema.json
x-submission-notes: 'relist check: clear: not on the delisting registry. Personal-data inference (gender from names/emails)
  -- enrichment PII guardrail applies to examples.'
x-submission-probe: root 200; /docs 200; /apis.json 200 application/json (aid namegender.com, 0.19); /openapi.json 200 OpenAPI
  3.1.0, 10 paths, server https://namegender.com, bearerAuth+apiKeyHeader; /llms.txt 200; invented path 404 (real 404). GET
  /api/v1/gender?name=maria -> 401 JSON missing_key.
x-submitted-by: info@namegender.com (apis.io/add, 2026-10-05T23:22:53.319Z)
x-enrichment:
  date: '2026-10-06'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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