FaceRuler

FaceRuler is a free, privacy‑first face rating instrument that provides an instant attractiveness score, percentile, face shape, and a detailed 8‑metric breakdown. Users upload a single photo with no sign‑up and receive a rating on a public scale, fully explained and designed for transparency.

FaceRuler is listed with 1 API on the APIs.io network. Tagged areas include Face Rating, Attractiveness, Artificial Intelligence, Privacy, and Free.

FaceRuler’s developer surface includes documentation, pricing, engineering blog, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

24.3/100 emerging Agent 6/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumOpen⚡ Free to try

1 API

Face RatingAttractivenessArtificial Intelligence Privacy Free

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 24.3/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 3.1 / 17

Access Clarity 11.2 / 17

Operational Transparency 0.5 / 11

Contract Governance 0.0 / 10

Discoverability 5.6 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 6/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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 3 / 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 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/.

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

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points Ask about this →
Developer Ergonomics scores 18.3 — up to +16.3 composite points Ask about this →
Operational Transparency scores 4.8 — up to +12.4 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/faceruler-com/apis.yml: open an issue on github.com/api-evangelist/faceruler-com 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 →

APIs 1

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

FaceRuler MCP API

Machine-readable contract endpoint providing tool list for FaceRuler.

FaceRuler API pricing

Prices published by FaceRuler. A free plan or tier is listed.

Plan	Price
Free	Free $0
20 Credits	$5.99
60 Credits	$9.99
Pro (monthly)	$9.99/mo
Pro (yearly)	$59.99/yr

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

FaceRuler Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

FaceRuler Rate Limits

0 limits

RATE LIMITS

Terms of Service 1

What its API terms permit and prohibit, quoted from its own page.

FaceRuler

9 quoted statements, read from FaceRuler's own page on 2026-11-09.

TERMS

Privacy & Data 1

Its role, the data it processes, retention and transfers, quoted from its own privacy page.

FaceRuler

11 quoted statements, read from FaceRuler's own page on 2026-11-09.

PRIVACY

Eligibility 1

Who may sign up and where, quoted from its own terms.

FaceRuler

2 quoted statements, read from FaceRuler's own page on 2026-11-09.

ELIGIBILITY

AI Preferences 1

Its stance on AI training, inference and agents, quoted from its own pages.

FaceRuler

1 quoted statement, read from FaceRuler's own page on 2026-11-09.

AI PREFS

Data License 1

How its data and outputs may be reused, quoted from its own terms.

FaceRuler

1 quoted statement, read from FaceRuler's own page on 2026-11-09.

LICENSE

Security Posture 2

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

FaceRuler Authentication

0 schemes

SECURITY

FaceRuler Domain Security

TLSv1.3

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

FaceRuler Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

AIPreferences

AIPreferences

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 6

Pricing, plans, and the legal terms of use

Plans

Pricing

PrivacyPolicy

TermsOfService

UsageTerms

DataLicense

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 4

Properties that don't map to a standard resource type

Hosts

Vendors

DataProcessing

Eligibility

Source (apis.yml)

aid: faceruler-com
name: FaceRuler
description: FaceRuler is a free, privacy‑first face rating instrument that provides an instant attractiveness score, percentile,
  face shape, and a detailed 8‑metric breakdown. Users upload a single photo with no sign‑up and receive a rating on a public
  scale, fully explained and designed for transparency.
url: https://artifacts.apis.io/faceruler-com/apis.yml
accessModel:
  pricing: freemium
  onboarding: open
  trial: false
  try_now: true
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Open access
  confidence: medium
  probe_state: unreadable
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://faceruler.com/_next/image?url=%2Flogo.png&w=256&q=75
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-07 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-07'
modified: '2026-11-07'
tags:
- Face Rating
- Attractiveness
- Artificial Intelligence
- Privacy
- Free
tags_raw:
- Face Rating
- Attractiveness
- AI
- Privacy
- Free
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/faceruler-com-plans-pricing.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/faceruler-com-llms.txt
- type: Hosts
  url: hosts/faceruler-com-hosts.yml
- type: Vendors
  url: vendors/faceruler-com-vendors.yml
- type: Documentation
  url: https://faceruler.com/guides
- type: DomainSecurity
  url: security/faceruler-com-domain-security.yml
- type: Website
  url: https://faceruler.com/
- type: Pricing
  url: https://faceruler.com/pricing
- type: PrivacyPolicy
  url: https://faceruler.com/privacy-policy
- type: TermsOfService
  url: https://faceruler.com/terms-of-service
- type: Blog
  url: https://faceruler.com/blog
- type: GitHubOrganization
  url: https://github.com/faceruler
- type: UsageTerms
  url: terms/faceruler-com-terms-of-service.yml
- type: DataProcessing
  url: privacy/faceruler-com-privacy-policy.yml
- type: Eligibility
  url: eligibility/faceruler-com-eligibility.yml
- type: AIPreferences
  url: ai-preferences/faceruler-com-ai-preferences.yml
- type: DataLicense
  url: data-license/faceruler-com-data-license.yml
apis:
- name: FaceRuler MCP API
  description: Machine-readable contract endpoint providing tool list for FaceRuler.
  humanURL: https://faceruler.com/guides
  baseURL: https://faceruler.com/api/mcp
  aid: faceruler-com:faceruler-mcp-api
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: The FaceRuler site provides public documentation but no machine‑readable OpenAPI, GraphQL, AsyncAPI, or other contract.
  evidence:
  - url: https://faceruler.com/guides
    status: 200
  checked: '2026-11-07'
x-enrichment:
  date: '2026-11-07'
  status: enriched
  artifacts_added: 24
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

FaceRuler API — frequently asked questions

Does FaceRuler have an API?

Yes. APIs.io lists 1 API from FaceRuler, including FaceRuler MCP API.

How do I authenticate with the FaceRuler API?

FaceRuler documents its authentication (0 schemes). The details are profiled on APIs.io as FaceRuler Authentication.

How much does the FaceRuler API cost?

FaceRuler publishes its prices; its Free plan is Free $0 as of 2026-11-07. APIs.io lists 5 pricing plans for FaceRuler, with each plan's price, limits and inclusions under Pricing on this page.

Is the FaceRuler API ready for AI agents?

FaceRuler has a Kin Score of 24.3 out of 100 (emerging) and an Agent Readiness score of 5.8 (agent-aware), scored by API Evangelist on 2026-11-13.

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