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.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Hevy the way a machine reads it — 11 machine-readable artifacts across 2 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Hevy scores 50.9/100 (developing), with a separate agent-readiness read of 24/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-01 · rubric v0.18.0
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<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/hevy/"
title="Hevy on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/hevy.svg"
alt="Hevy Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/hevy/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/hevy/"
title="Hevy on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/hevy/card.svg"
alt="Hevy Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Hevy
Each block below is one kind of artifact we hold for Hevy. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 7
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Hevy Exercise History API
The ExerciseHistory API from Hevy — 1 operation(s) for exercisehistory.
Hevy Exercise Templates API
The ExerciseTemplates API from Hevy — 2 operation(s) for exercisetemplates.
Hevy Measurements API
The Measurements API from Hevy — 2 operation(s) for measurements.
Hevy Routine Folders API
The RoutineFolders API from Hevy — 3 operation(s) for routinefolders.
Hevy Routines API
The Routines API from Hevy — 3 operation(s) for routines.
Hevy Users API
The Users API from Hevy — 1 operation(s) for users.
Hevy Workouts API
The Workouts API from Hevy — 5 operation(s) for workouts.
Scroll within the panel for all 7 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Hevy Plans Pricing
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Hevy Rate Limits
RATE LIMITSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Hevy — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 5
Pagination, idempotency, versioning, errors, and events
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 6
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/hevy · machine-readable index on apis.io
This is an independent, third-party profile of Hevy, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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