F6S

The API Design Management Platform powering the world's leading API first companies.

F6S publishes 1 API on the APIs.io network. Tagged areas include Accelerators, Funding, Jobs, and Startups.

F6S’s developer surface includes documentation, developer portal, signup flow, engineering blog, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub

27.0/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemium

1 APIs

AcceleratorsFundingJobsStartups

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 27.0/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 3.9 / 20

Commercial Clarity 14.7 / 20

Operational Transparency 4.8 / 13

Governance 0.0 / 12

Discoverability 3.5 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

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 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

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/f6s: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

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

F6S API

The F6S API provides programmatic access to the F6S platform, the world's largest startup and founder community. It enables developers to integrate with F6S's core capabilities ...

Pricing Plans 1

Published pricing tiers and plan structures.

F6S Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

F6S Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

F6S Finops

FINOPS

Security Posture 1

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

F6S Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 5

Portal, sign-up, and the first successful call

Portal

Portal

Portal

Signup

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 5

The organization behind the API

Website

Website

About

About

Blog

Blog

LinkedIn

Facebook

Facebook

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: f6s
url: https://raw.githubusercontent.com/api-evangelist/f6s/refs/heads/main/apis.yml
apis:
- aid: f6s:f6s-api
  name: F6S API
  tags:
  - Accelerators
  - Funding
  - Programs
  - Startups
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.f6s.com/
  properties:
  - url: https://developers.f6s.com/
    type: Documentation
  description: The F6S API provides programmatic access to the F6S platform, the world's largest startup and founder community.
    It enables developers to integrate with F6S's core capabilities including application management, program discovery, startup
    profiles, funding opportunities, and community data.
name: F6S
tags:
- Accelerators
- Funding
- Jobs
- Startups
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/f6s.png
access: 3rd-Party
common:
- type: DomainSecurity
  url: security/f6s-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/f6s
- url: https://www.f6s.com/
  name: F6S Website
  type: Website
- url: https://www.f6s.com/about
  name: About F6S
  type: About
- url: https://developers.f6s.com/
  name: API Documentation
  type: Documentation
- url: https://www.f6s.com/programs
  name: Programs
  type: Portal
- url: https://www.f6s.com/jobs
  name: Jobs
  type: Portal
- url: https://www.f6s.com/deals
  name: Deals
  type: Portal
- url: https://www.f6s.com/register
  name: Sign Up
  type: Signup
- url: https://www.f6s.com/login
  name: Login
  type: Login
- url: https://www.f6s.com/terms-of-service
  name: Terms of Service
  type: TermsOfService
- url: https://www.f6s.com/privacy-policy
  name: Privacy Policy
  type: PrivacyPolicy
- url: https://www.f6s.com/blog
  name: F6S Blog
  type: Blog
- url: https://twitter.com/f6s
  name: F6S on X (Twitter)
  type: X
- url: https://www.linkedin.com/company/f6s
  name: F6S on LinkedIn
  type: LinkedIn
- url: https://www.facebook.com/p/F6S-100063671786141/
  name: F6S on Facebook
  type: Facebook
created: '2026-03-24'
modified: '2026-04-28'
specificationVersion: '0.19'
description: The API Design Management Platform powering the world's leading API first companies.