RankScience

RankScience is a San Francisco based SEO and AI-visibility agency (RankScience LLC) that helps startups, SaaS companies, and enterprises grow search traffic through foundational and technical SEO, strategic content, and link building, alongside next-generation AI-search optimization services (Generative Engine Optimization, Large Language Model Optimization, and Answer Engine Optimization) for platforms like ChatGPT, Claude, and Perplexity. It began as a YC-backed SEO A/B testing platform and now operates as a services agency. RankScience does not currently publish a public developer API, SDKs, or API documentation; this profile captures its public web and AI-discovery surface (a published /llms.txt and domain security posture).

RankScience is profiled on the APIs.io network. Tagged areas include Company, Enterprise Saas, SEO, AI Visibility, and Generative Engine Optimization.

RankScience’s developer surface includes engineering blog, support, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub

12.3/100 minimal ▬ flat Agent 4/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyEnterprise SaasSEOAI VisibilityGenerative Engine OptimizationContent MarketingMarketing Agency

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 12.3/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 4.2 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 4/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

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 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/rankscience: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: rankscience
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/rankscience.png
name: RankScience
description: RankScience is a San Francisco based SEO and AI-visibility agency (RankScience LLC) that helps startups, SaaS
  companies, and enterprises grow search traffic through foundational and technical SEO, strategic content, and link building,
  alongside next-generation AI-search optimization services (Generative Engine Optimization, Large Language Model Optimization,
  and Answer Engine Optimization) for platforms like ChatGPT, Claude, and Perplexity. It began as a YC-backed SEO A/B testing
  platform and now operates as a services agency. RankScience does not currently publish a public developer API, SDKs, or
  API documentation; this profile captures its public web and AI-discovery surface (a published /llms.txt and domain security
  posture).
url: https://raw.githubusercontent.com/api-evangelist/rankscience/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- initialized-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Enterprise Saas
- SEO
- AI Visibility
- Generative Engine Optimization
- Content Marketing
- Marketing Agency
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://rankscience.com/
- type: Blog
  url: https://www.rankscience.com/blog
- type: Support
  url: https://www.rankscience.com/contact-us
- type: TermsOfService
  url: https://www.rankscience.com/terms-of-use
- type: PrivacyPolicy
  url: https://www.rankscience.com/privacy
- type: LLMsTxt
  url: llms/rankscience-llms.txt
- type: WellKnown
  url: well-known/rankscience-well-known.yml
- type: DomainSecurity
  url: security/rankscience-domain-security.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 3
  pass: local-v1