Caliber Fitness

Caliber Fitness, Inc. is a consumer strength-training and fitness-coaching company behind the Caliber: Strength Training app (iOS and Android). Caliber combines data-driven resistance-training and nutrition programming, a library of 600+ exercises, workout tracking, and one-on-one video coaching from certified personal trainers across free, Caliber Plus, and Premium Coaching tiers. Founded by Justin Fauci and Chris Muir, the company is backed by Trinity Ventures. Caliber operates as a consumer mobile app and coaching service; it does not publish a public developer API, developer portal, or OpenAPI at this time. This profile tracks its public web, legal, and membership surface within the API Evangelist network.

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

Caliber Fitness’ developer surface includes engineering blog, support, pricing, signup flow, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

19.0/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyConsumerFitnessHealthStrength TrainingCoachingNutritionMobile App

Kin Score

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

Composite quality — 19.0/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 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

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Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

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

Blog

Blog

Source (apis.yml)

aid: caliber-fitness
name: Caliber Fitness
description: 'Caliber Fitness, Inc. is a consumer strength-training and fitness-coaching company behind the Caliber: Strength
  Training app (iOS and Android). Caliber combines data-driven resistance-training and nutrition programming, a library of
  600+ exercises, workout tracking, and one-on-one video coaching from certified personal trainers across free, Caliber Plus,
  and Premium Coaching tiers. Founded by Justin Fauci and Chris Muir, the company is backed by Trinity Ventures. Caliber operates
  as a consumer mobile app and coaching service; it does not publish a public developer API, developer portal, or OpenAPI
  at this time. This profile tracks its public web, legal, and membership surface within the API Evangelist network.'
url: https://raw.githubusercontent.com/api-evangelist/caliber-fitness/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- trinity-ventures
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
image: https://caliberstrong.com/wp-content/uploads/2022/02/caliber_open_graph.png
tags:
- Company
- Consumer
- Fitness
- Health
- Strength Training
- Coaching
- Nutrition
- Mobile App
apis: []
common:
- type: DomainSecurity
  url: security/caliber-fitness-domain-security.yml
- type: Website
  url: https://caliberstrong.com
- type: Blog
  url: https://caliberstrong.com/blog/
- type: Support
  url: https://caliberstrong.com/faqs/
- type: Pricing
  url: https://caliberstrong.com/membership/
- type: SignUp
  url: https://caliberstrong.com/signup/
- type: Login
  url: https://caliberstrong.com/login/
- type: TermsOfService
  url: https://caliberstrong.com/terms-of-service/
- type: PrivacyPolicy
  url: https://caliberstrong.com/privacy-policy/
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