Polar
Polar Electro Oy (operating as Polar Global) is a Finnish sports and fitness technology company founded in 1977 and headquartered in Kempele, Finland. Polar invented the first wireless wearable heart rate monitor — the Sport Tester PE 2000 in 1982 — and remains one of the longest-standing brands in consumer heart rate sensing, GPS sports watches, and fitness wearables. The Polar device portfolio includes the H10 and H9 chest straps, the Verity Sense and OH1 optical sensors, the Polar 360 and Loop fitness bands, and the Vantage, Grit X, Pacer, Ignite, and Unite watch lines, along with a dedicated equine sensor line. Developers access Polar data through the Polar AccessLink API for consumer Polar Flow data, the Polar TeamPro API for team and player training sessions, and the open-source Polar BLE SDK for iOS and Android applications that stream live sensor data over Bluetooth Low Energy.
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 Polar the way a machine reads it — 64 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 — Polar scores 42.2/100 (developing), with a separate agent-readiness read of 31/100 (agent ready). 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 2026-09-08 · rubric v0.20.0
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<!-- Kin Score · API Evangelist -->
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<img src="https://apis.io/badge/polar.svg"
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</a>[](https://providers.apievangelist.com/providers/polar/)<!-- Kin Score · API Evangelist -->
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title="Polar on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/polar/card.svg"
alt="Polar 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 Polar
Each block below is one kind of artifact we hold for Polar. 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 19
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.
Polar BLE SDK
The Polar BLE SDK enables iOS and Android applications to stream live data from Polar sensors over Bluetooth Low Energy. Supports H10, H9, Verity Sense, OH1, Ignite 3, Polar 360...
Polar Cardio load API
Cardio load is based on training impulse calculation (TRIMP), a commonly accepted and scientifically proven method to quantify training load. Your Cardio load value tells you ho...
Polar Continuous Heart Rate API
This resource allows partners to access their users' continuous heart rate data. Continuous heart rate is recorded with supported devices when the heart rate tracking is turned ...
Polar Daily activity API
This resource allows partners to access their users' daily activity data. Webhooks are used to notify partners when new data is available.
Polar Daily activity (deprecated) API
This resource allows partners to access their users' daily activity data. During the transfer, the activity data is copied also into the AccessLink database so the end-users can...
Polar Elixir™ Biosensing API
This resource allows partners to access their users' Elixir™ Biosensing data. All time values are UTC times. Elixir™ Biosensing data consists of body temperature dat...
Polar Exercises API
Resources for getting information about exercise. These endpoints do not require an active transaction, but they use hashed id.
Polar Exercises (deprecated) API
This resource allows partners to access their users' training data. All time values are UTC except start-time. Start-time is the time set on the training computer. Each transact...
Polar Nightly Recharge API
Nightly Recharge™ is a recovery measurement that shows how well your body recovers from daily training and stress. It is based on heart rate variability (HRV) and overnigh...
Polar Physical info API
This resource allows partners to access their users' physical information.
Polar Physical info (deprecated) API
This resource allows partners to access their users' physical information. Whenever some user's physical information changes, new entry containing full physical info is stored t...
Polar Player training sessions API
Endpoints for getting players training session and details.
Polar Pull notifications API
This resource allows partners to check if their users have available data for downloading. Use client credentials authentication. Returns object holding list of available data o...
Polar Sleep API
Sleep endpoints support [Polar Sleep Plus™](https://www.polar.com/en/smart-coaching/polar-sleep-plus) and [Sleep Plus Stages™](https://www.polar.com/en/smart-coachin...
Polar SleepWise™ API
This resource allows partners to access their users' SleepWise™ data. All time values are UTC times. SleepWise™ data is calculated for [SleepWise™](https://sup...
Polar Team API
Endpoints for getting teams and team details.
Polar Team training sessions API
Endpoints for getting team training sessions and details.
Polar Users API
This resource provides all the necessary functions to manage users.
Polar Webhooks API
Webhook resources provides endpoints for creating, modifying and deleting webhooks.
Scroll within the panel for all 19 ·
Open Collections 22
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONPolar AccessLink API
OPEN COLLECTIONPolar AccessLink Webhooks
OPEN COLLECTIONPolar AccessLink Cardio load API
OPEN COLLECTIONPolar AccessLink Cardio load Continuous Heart Rate API
OPEN COLLECTIONPolar AccessLink Cardio load Daily activity API
OPEN COLLECTIONPolar AccessLink Cardio load Daily activity (deprecated) API
OPEN COLLECTIONPolar AccessLink Cardio load Elixir™ Biosensing API
OPEN COLLECTIONPolar AccessLink Cardio load Exercises API
OPEN COLLECTIONPolar AccessLink Cardio load Exercises (deprecated) API
OPEN COLLECTIONPolar AccessLink Cardio load Nightly Recharge API
OPEN COLLECTIONPolar AccessLink Cardio load Physical info API
OPEN COLLECTIONPolar AccessLink Cardio load Physical info (deprecated) API
OPEN COLLECTIONPolar AccessLink Cardio load Player training sessions API
OPEN COLLECTIONPolar AccessLink Cardio load Pull notifications API
OPEN COLLECTIONPolar AccessLink Cardio load Sleep API
OPEN COLLECTIONPolar AccessLink Cardio load SleepWise™ API
OPEN COLLECTIONPolar AccessLink Cardio load Team API
OPEN COLLECTIONPolar AccessLink Cardio load Team training sessions API
OPEN COLLECTIONTeamPro API
OPEN COLLECTIONPolar AccessLink Cardio load Users API
OPEN COLLECTIONPolar AccessLink Cardio load Webhooks API
OPEN COLLECTIONScroll within the panel for all 22 ·
GraphQL 1
Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.
GraphQL schemas published by this provider.
Polar GraphQL API
Polar is a creator monetization platform for newsletters and digital products. The API covers subscriptions, products, benefits, orders, customers, and analytics for newsletter ...
GRAPHQLFeatures 17
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
Scroll within the panel for all 17 ·
Security Posture 3
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.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Polar — 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 5
Portal, sign-up, and the first successful call
Documentation 4
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Learn 1
Tutorials, courses, talks, and written guidance
Operate 1
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 7
The organization behind the API
Scroll within the panel for all 7 ·
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/polar · machine-readable index on apis.io
This is an independent, third-party profile of Polar, 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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