Hevy

Hevy is a gym workout tracker and planner app for iOS, Android and the web, operated by Hevy Studios, S.L. and used by a community the company describes as 15+ million lifters. Members log strength-training sessions, build and reuse routines, organize them into folders, browse a large exercise library, and track body measurements and progress over time. Hevy also runs Hevy Coach, a separate product for personal trainers who program and monitor client training. For developers, Hevy Pro subscribers can mint an API key in the web app and call a public REST API at api.hevyapp.com covering workouts, a workout change-feed, routines, routine folders, exercise templates, exercise history, body measurements and account info. The company also publishes a first-party ChatGPT Custom GPT ("Hevy - Gym workout planner") whose OAuth-authenticated action spec it keeps in its own GitHub organization.

Hevy publishes 2 APIs on the APIs.io network: Public API and GPT Action API. Tagged areas include Company, Fitness, Health, Workout Tracking, and Strength Training.

Hevy’s developer surface includes documentation, API reference, support, engineering blog, pricing, signup flow, changelog, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub

51.6/100 developing Agent 30/100 agent ready Full breakdown ↓
scored 2026-08-27 · rubric v0.15.1

2 APIs

Company Fitness HealthWorkout TrackingStrength Training Consumer Apps MobileQuantified SelfPersonal Training Health Data

Kin Score

Kin Score How this is scored →
scored 2026-08-27 · rubric v0.15.1

Composite quality — 51.6/100 · developing

Contract Quality 9.2 / 21

Developer Ergonomics 8.9 / 17

Access Clarity 11.2 / 17

Operational Transparency 4.1 / 11

Contract Governance 3.1 / 10

Discoverability 5.8 / 9

Regulatory Posture 4.7 / 15

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 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 Surface 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Health 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.

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/.

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/hevy: 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 2

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

Rate Limits 1

Documented rate limits and quota policies.

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Lifecycle

Conventions

ErrorCatalog

DataModel

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 6

Status, limits, changes, and where to get help

Support

HelpCenter

StatusPage

ChangeLog

ChangeLog

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: hevy
name: Hevy
description: Hevy is a gym workout tracker and planner app for iOS, Android and the web, operated by Hevy Studios, S.L. and
  used by a community the company describes as 15+ million lifters. Members log strength-training sessions, build and reuse
  routines, organize them into folders, browse a large exercise library, and track body measurements and progress over time.
  Hevy also runs Hevy Coach, a separate product for personal trainers who program and monitor client training. For developers,
  Hevy Pro subscribers can mint an API key in the web app and call a public REST API at api.hevyapp.com covering workouts,
  a workout change-feed, routines, routine folders, exercise templates, exercise history, body measurements and account info.
  The company also publishes a first-party ChatGPT Custom GPT ("Hevy - Gym workout planner") whose OAuth-authenticated action
  spec it keeps in its own GitHub organization.
image: https://www.hevyapp.com/wp-content/uploads/OG-image.png
url: https://raw.githubusercontent.com/api-evangelist/hevy/refs/heads/main/apis.yml
x-type: company
x-source: harvest:health-device-stack
specificationVersion: '0.20'
created: '2026-08-27'
modified: '2026-08-27'
tags:
- Company
- Fitness
- Health
- Workout Tracking
- Strength Training
- Consumer Apps
- Mobile
- Quantified Self
- Personal Training
- Health Data
tags_raw:
- company
- fitness
- health
- workout-tracking
- strength-training
- consumer-apps
- mobile
- quantified-self
- personal-training
- health-data
apis:
- name: Hevy Public API
  description: Public REST API for Hevy Pro accounts. 22 operations across workouts (list, create, update, count and a since-based
    change feed of updates and deletes), routines, routine folders, exercise templates, exercise history and body measurements,
    plus account info. Authenticated with a per-account UUID API key sent in the api-key request header; page/pageSize pagination
    on every collection.
  humanURL: https://api.hevyapp.com/docs
  baseURL: https://api.hevyapp.com
  tags:
  - Fitness
  - Health
  - Workout Tracking
  - Strength Training
  - Health Data
  - Quantified Self
  tags_raw:
  - fitness
  - health
  - workout-tracking
  - strength-training
  - health-data
  - quantified-self
  properties:
  - type: OpenAPI
    url: openapi/hevy-public-api-openapi.json
  - type: Documentation
    url: https://api.hevyapp.com/docs
  - type: APIReference
    url: https://api.hevyapp.com/docs
  - type: Authentication
    url: authentication/hevy-authentication.yml
  - type: Conventions
    url: conventions/hevy-conventions.yml
  - type: ErrorCatalog
    url: errors/hevy-problem-types.yml
  - type: DataModel
    url: data-model/hevy-data-model.yml
  - type: Overlay
    url: overlays/hevy-public-api-overlay.yaml
- name: Hevy GPT Action API
  description: OAuth-authenticated action surface behind Hevy's first-party ChatGPT Custom GPT, "Hevy - Gym workout planner".
    Six operations (list workouts, list/create routines, list/create routine folders, exercise history) served from hevy.com/api/v1
    rather than api.hevyapp.com. Hevy publishes the OpenAPI 3.1.0 action schema in its own GitHub organization at github.com/hevyapp/hevy-gpt.
  humanURL: https://github.com/hevyapp/hevy-gpt
  baseURL: https://hevy.com/api/v1
  tags:
  - Fitness
  - Workout Tracking
  - agent-native
  - Health Data
  tags_raw:
  - fitness
  - workout-tracking
  - agent-native
  - health-data
  properties:
  - type: OpenAPI
    url: openapi/hevy-gpt-action-openapi.json
  - type: SourceCode
    url: https://github.com/hevyapp/hevy-gpt
  - type: Documentation
    url: https://chatgpt.com/g/g-68278fb711f881919f635175ace543f9-hevy-gym-workout-planner
common:
- type: Website
  url: https://www.hevyapp.com
- type: DeveloperPortal
  url: https://api.hevyapp.com/docs
- type: Documentation
  url: https://api.hevyapp.com/docs
- type: APIReference
  url: https://api.hevyapp.com/docs
- type: Support
  url: https://www.hevyapp.com/contact/
- type: HelpCenter
  url: https://www.hevyapp.com/help/
- type: Blog
  url: https://www.hevyapp.com/blog/
- type: GitHubOrganization
  url: https://github.com/hevyapp
- type: Pricing
  url: https://hevy.com/pricing
- type: SignUp
  url: https://hevy.com/signup
- type: Login
  url: https://hevy.com/login
- type: TermsOfService
  url: https://www.hevyapp.com/legal/terms-and-conditions/
- type: PrivacyPolicy
  url: https://www.hevyapp.com/legal/privacy-policy/
- type: StatusPage
  url: https://www.hevyapp.com/status/
- type: ChangeLog
  url: https://www.hevyapp.com/community-updates/
- type: ChangeLog
  url: changelog/hevy-changelog.yml
- type: Lifecycle
  url: lifecycle/hevy-lifecycle.yml
- type: Authentication
  url: authentication/hevy-authentication.yml
- type: Conventions
  url: conventions/hevy-conventions.yml
- type: ErrorCatalog
  url: errors/hevy-problem-types.yml
- type: DataModel
  url: data-model/hevy-data-model.yml
- type: Conformance
  url: conformance/hevy-conformance.yml
- type: DomainSecurity
  url: security/hevy-domain-security.yml
- type: Packages
  url: packages/hevy-packages.yml
- type: RateLimits
  url: rate-limits/hevy-rate-limits.yml
- type: Plans
  url: plans/hevy-plans-pricing.yml
- type: LLMsTxt
  url: llms/hevy-llms.txt
- type: AgentSkill
  url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-08-27'
  status: enriched
  artifacts_added: 23
  pass: local-v1

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Hevy

Kin Score

APIs 2

Hevy Public API

Hevy GPT Action API

Pricing Plans 1

Hevy Plans Pricing