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, Name, Data Enrichment, Demographics, and Bulk.

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 📡 Profile data on GitHub

50.8/100 developing ▼ -11.4 Agent 38/100 agent ready Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract

Gender Name Data Enrichment Demographics Bulk

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 50.8/100 · developing

Contract Quality 13.8 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 9.3 / 15

Operational Transparency 3.6 / 10

Contract Governance 2.0 / 9

Discoverability 4.6 / 8

Regulatory Posture 3.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 38/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 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

Pagination 5 / 5

Distinct Operations 0 / 3

MCP Tool Quality 6 / 6

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/namegender/"><img src="https://apis.io/badge/namegender/card.svg" alt="NameGender on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Agent Skills +5 pts — skills artifact present, graded by who authored it

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Developer Ergonomics scores 32.1 — up to +13.6 composite points
Contract Governance scores 22.0 — up to +9.4 composite points
Operational Transparency scores 36.8 — up to +8.2 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/namegender/apis.yml: open an issue on github.com/api-evangelist/namegender to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Official SDKs on Packagist, pub.dev and Hex	distribution	28.8	-	-
Official R Client Packages on CRAN	distribution	28.8	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

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.

NameGender API pricing

Prices published by NameGender, read 2026-10-06 from namegender.com/pricing.

Plan	Price
5K	€5.00
25K	€17.10
50K	€27.00
100K	€45.00
200K	€54.00
300K	€63.00
500K	€81.00
1M	€99.00

All 13 plans, limits and sources →

Billed by: seat · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Namegender Plans Pricing

13 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

NameGender

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Namegender Finops

FINOPS

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

8 properties

JSON SCHEMA

CountriesResponse

9 properties

JSON SCHEMA

SingleResponse

19 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

JSONLD

Vocabulary

Idempotency

Conventions

Conformance

Webhooks

DataModel

Lifecycle

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

Deprecation

Support

StatusPage

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

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)

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)
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-10-06'
modified: '2026-10-06'
tags:
- Gender
- Name
- Data Enrichment
- Demographics
- Bulk
tags_raw:
- 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:
  - Webhook
  tags_raw:
  - 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

NameGender API — frequently asked questions

Does NameGender have an API?

Yes. APIs.io lists 4 APIs from NameGender, including NameGender Account API, NameGender Batches API and NameGender Gender API, and 1 more.

Is there an OpenAPI specification for the NameGender API?

Yes. APIs.io indexes 4 OpenAPI specifications for NameGender, each linked for download from this page.

How do I authenticate with the NameGender API?

NameGender uses bearer-token authentication.

How much does the NameGender API cost?

NameGender publishes its prices; its 5K plan is €5.00 as of 2026-10-06. APIs.io lists 13 pricing plans for NameGender, with each plan's price, limits and inclusions under Pricing on this page.

Is the NameGender API ready for AI agents?

NameGender has a Kin Score of 50.8 out of 100 (developing) and an Agent Readiness score of 37.7 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/namegender"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/namegender/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/namegender/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.