Fort

Fort is a Y Combinator (W26) hardware startup building a screenless wearable that automatically tracks strength training for people who care about longevity. Founded by three former Tesla engineers, the device uses heart rate and motion sensing to detect gym sessions, workout classes, sleep, and recovery without requiring the wearer to manually log reps, sets, or exercises, then delivers actionable feedback on how lifestyle factors affect strength progress. Fort is styled as jewelry rather than performance gear, ships in three finishes with 7+ day battery life, and pairs with Fort Foundations, an expert-led training program built around core movement patterns. The product is currently available for pre-order and has no public developer API or programmatic surface at this time; this profile captures the company's public web and commercial presence.

Fort is profiled on the APIs.io network. Tagged areas include Company, Wearables, Health, Fitness, and Strength Training.

Fort’s developer surface includes pricing, signup flow, support, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

18.6/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyWearablesHealthFitnessStrength TrainingConsumer HardwareLongevityIoT

Kin Score

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

Composite quality — 18.6/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 0.9 / 20

Commercial Clarity 8.9 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · 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 0 / 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/fort: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

X-LinkedIn

X-LinkedIn

Source (apis.yml)

aid: fort
name: Fort
description: Fort is a Y Combinator (W26) hardware startup building a screenless wearable that automatically tracks strength
  training for people who care about longevity. Founded by three former Tesla engineers, the device uses heart rate and motion
  sensing to detect gym sessions, workout classes, sleep, and recovery without requiring the wearer to manually log reps,
  sets, or exercises, then delivers actionable feedback on how lifestyle factors affect strength progress. Fort is styled
  as jewelry rather than performance gear, ships in three finishes with 7+ day battery life, and pairs with Fort Foundations,
  an expert-led training program built around core movement patterns. The product is currently available for pre-order and
  has no public developer API or programmatic surface at this time; this profile captures the company's public web and commercial
  presence.
url: https://raw.githubusercontent.com/api-evangelist/fort/refs/heads/main/apis.yml
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://fort.cx/images/og-image.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-yc-batch: W26
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Wearables
- Health
- Fitness
- Strength Training
- Consumer Hardware
- Longevity
- IoT
apis: []
common:
- type: Website
  url: https://fort.cx
- type: Pricing
  url: https://fort.cx/order
- type: SignUp
  url: https://fort.cx/waitlist
- type: Support
  url: https://fort.cx/faq
- type: TermsOfService
  url: https://fort.cx/terms
- type: PrivacyPolicy
  url: https://fort.cx/privacy
- type: X-LinkedIn
  url: https://www.linkedin.com/company/fortwearable
- type: DomainSecurity
  url: security/fort-domain-security.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence