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io.github.davidmosiah/polarmcp

NPM · POLAR-MCP-UNOFFICIAL

Privacy-first unofficial Polar AccessLink v4 MCP server for AI health, sleep and training agents.

−5 this week 81 Trust /100

Last scanned (13 hours ago)

Scores higher than 69% of npm servers

Category Health and Science

Trust breakdown (7 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →

Supply Chain Security98
  • No malware found by supply-chain analysis.Pass
  • No known CVEs affecting this package version or its production dependencies.Pass
  • No install/post-install scripts declared.Pass
  • 51 of 127 dependencies flagged as unhealthy (1 deprecated). View diagnostics → Partial
Provenance & Transparency48
  • Source repository is publicly reachable at the declared URL. View diagnostics → Pass
  • Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
  • Clear OSI-approved license (MIT).Pass
  • Actively maintained (last published 32 days ago).Pass
  • Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability84
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (good).Pass
  • Context-footprint check failed: tool/resource definitions use about 4532 tokens (~103/item across 44 items; 37 tools + 7 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management67
  • Stability observed for 20 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage93
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 77% of tool parameters carry a description.Partial
  • Structured output schemas are declared (86% of tools); any adoption earns full credit.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
  • An AI judge read all 38 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
What we tested

Checks we ran (16)

  • Malware scan
  • Known CVEs
  • Install scripts
  • Dependency health
  • Source repository
  • Provenance
  • License
  • Maintenance
  • Security disclosure
  • Schema quality
  • Stability
  • Tool coverage
  • Injection markers
  • Destructive annotations
  • Judged manipulation
  • MCP protocol

Does not apply to this package (2)

  • Endpoint SecurityScored on hosted endpoints only. A package has no live endpoint of its own for us to probe.
  • Transport & ReachabilityScored on hosted endpoints only. A package has no live endpoint of its own for us to probe.

The score does not measure everything. What the score does not measure →

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 5 Nov 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

  • 4 Nov 26 −6
    • Stability: pass → 0.63 functional
  • 29 Oct 26 +1
    • Stability: 0.97 → pass security
  • 28 Oct 26 −1
    • Stability: pass → 0.97 functional
  • 22 Oct 26 +1
    • Stability: 0.97 → pass security
  • 21 Oct 26 −1
    • Stability: pass → 0.97 functional
  • 17 Oct 26 +3
    • Stability: 0.80 → pass security
  • 16 Oct 26 +44
    • Injection markers: unverified → pass ▲ security
    • Stability: unverified → 0.80 ▲ functional
    • Tool coverage: unverified → 100 ▲ functional
    • MCP protocol: unverified → pass ▲ functional
    • Schema quality: unverified → 100 ▲ functional
Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 5 Nov 2026 · Analysed npm/polar-mcp-unofficial@0.3.6

Provenance No attestation

The registry publishes no build provenance for this version, so there is nothing to verify.

Result No attestation
Ecosystem npm

Background: How many MCP packages publish verified provenance →

Dependencies 127 packages
Packages resolved 127
Deprecated 1
Stale 50
Tree resolution Complete

Background: SBOMs and build attestations, explained →

MCP tools · 37 exposed · ~4,411 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
polar_agent_manifest ~44

Machine-readable install, runtime and client guidance for AI agents. Does not call Polar or expose secrets.

NameTypeReqDescription
clientstring––
response_formatstring––
NameTypeReqDescription
agent_rulesarrayyes–
clientstringyes–
hermesobjectyes–
linksobjectyes–
mcp_namestringyes–
oauthobjectyes–
packageobjectyes–
projectstringyes–
recommended_first_callsarrayyes–
resourcesarrayyes–
standard_toolsarrayyes–
troubleshootingarrayyes–
unofficialbooleanyes–

No examples provided.

polar_cache_status ~37

Show optional local SQLite cache status. Enable with POLAR_CACHE=sqlite or POLAR_CACHE=true.

NameTypeReqDescription
response_formatstring––
NameTypeReqDescription
enabledbooleanyes–
entriesintegeryes–
http_cacheobject––
newest_cached_atstring––
pathstringyes–

No examples provided.

polar_capabilities ~32

Explain supported Polar data, privacy boundaries, recommended agent workflow and project links.

NameTypeReqDescription
response_formatstring––
NameTypeReqDescription
api_boundaryobjectyes–
auth_modelobjectyes–
client_aliasesobjectyes–
contribution_pathsarrayyes–
creatorobjectyes–
linksobjectyes–
mcp_namestringyes–
privacy_modesarrayyes–
projectstringyes–
recommended_agent_flowarrayyes–
supported_dataarrayyes–
unofficialbooleanyes–

No examples provided.

polar_connection_status ~52

Check local Polar config, token file, Node version, privacy mode, cache readiness and optional MCP client readiness without calling Polar or exposing secrets.

NameTypeReqDescription
clientstring––
response_formatstring––
NameTypeReqDescription
automatic_auth_supportedbooleanyes–
cacheobjectyes–
clientstring––
client_checksobject––
configobjectyes–
missing_envarrayyes–
next_stepsarrayyes–
nodeobjectyes–
oauthobjectyes–
okbooleanyes–
privacy_modestringyes–
ready_for_polar_apibooleanyes–
redirect_uristring––
required_envobjectyes–
tokenobjectyes–

No examples provided.

polar_daily_summary ~80

Build a practical daily summary from Polar sleep, activity, Nightly Recharge and training data when available. Read-only and non-medical.

NameTypeReqDescription
daysinteger–Lookback window for recent training context.
response_formatstring––
timezonestring–IANA timezone used only for display, e.g. America/New_York.
NameTypeReqDescription
generated_atstringyes–
kindstringyes–

No examples provided.

polar_data_inventory ~44

Inventory supported Polar data domains, auth scope requirements, privacy boundary and recommended first calls. Does not call Polar APIs or expose user data.

NameTypeReqDescription
response_formatstring––
NameTypeReqDescription
api_boundary–––
auth–––
categoriesarrayyes–
data_access_modelstringyes–
first_toolsarrayyes–
generated_atstringyes–
kindstringyes–
linksobjectyes–
mcp_namestringyes–
notesarrayyes–
privacy_modesarrayyes–
recommended_agent_flowarrayyes–
scopesarrayyes–
sourcestringyes–
totalsobjectyes–
unofficialbooleanyes–

No examples provided.

polar_demo ~50

Returns realistic example payloads of polar_daily_summary, polar_wellness_context, and polar_list_nightly_recharge so agents see the contract before calling real Polar APIs.

NameTypeReqDescription
response_formatstring––

No output schema declared.

No examples provided.

polar_exchange_code ~61

Exchange a Polar OAuth authorization code for local tokens. Tokens are stored locally with 0600 permissions and are never returned.

NameTypeReqDescription
codestringyesOAuth authorization code, or a full redirect URL containing ?code=...
response_formatstring––
NameTypeReqDescription
expires_atnumber––
notestringyes–
okbooleanyes–
scopestring––
token_pathstringyes–

No examples provided.

polar_get_account_data ~70

Read Polar user account fields exposed by AccessLink. Requires profile:read.

NameTypeReqDescription
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
data–yes–
endpointstringyes–
privacy_modestringyes–

No examples provided.

polar_get_auth_url ~70

Generate a Polar OAuth authorization URL. Use this first when no local token exists.

NameTypeReqDescription
response_formatstring––
scopesarray–Optional scope override. Defaults to read-only Polar scopes used by this server.
statestring–Optional OAuth state value generated by the caller.
NameTypeReqDescription
auth_urlstringyes–
next_stepstringyes–
redirect_uristringyes–
scopesarrayyes–

No examples provided.

polar_get_route ~97

Load a Polar route by route id. Routes are GPS-sensitive; default privacy modes redact coordinates. Requires routes:read.

NameTypeReqDescription
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
route_idstringyesPolar route id returned by a calendar or training-session record.
NameTypeReqDescription
data–yes–
endpointstringyes–
privacy_modestringyes–

No examples provided.

polar_list_activity ~168

List Polar daily activity records. Requires activity:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_calendar ~171

List Polar calendar entries in a date range. Requires calendar:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_continuous_samples ~179

List continuous sample records for a date range. Requires continuous_samples:read. Not medical advice.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_nightly_recharge ~181

List Nightly Recharge results in a date range. Requires nightly_recharge:read. Not medical advice.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_ppi_samples ~178

List pulse-to-pulse interval samples in a date range. Requires ppi_data:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_skin_contacts ~173

List skin contact periods in a date range. Requires skin_contact:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_sleep_wake_vectors ~180

List sleep/wake vector records in a date range. Requires sleep:read. Not medical advice.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_sleeps ~177

List Polar sleep records in a date range. Requires sleep:read. Not medical advice.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_sport_profile_catalog ~171

Load Polar sport profile catalog. Requires sports:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_sport_profiles ~171

List the user's Polar sport profiles. Requires sports:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_sports ~171

List sports available in the Polar ecosystem. Requires sports:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_subscriptions ~171

List user subscriptions and entitlements. Requires user_subscription:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_temperature_measurements ~174

List temperature measurements in a date range. Requires temperature_measurement:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_tests ~178

List Polar fitness/orthostatic/running test results in a date range. Requires tests:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_training_sessions ~173

List Polar training sessions in a date range. Requires training_sessions:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_training_target_favorites ~172

List user training target favorites. Requires training_targets:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_training_targets ~173

List calendar training targets in a date range. Requires training_targets:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_list_user_devices ~171

List devices registered to the Polar user. Requires devices:read.

NameTypeReqDescription
afterstring–Only return Polar records after this time. Converted to Polar's inclusive from query parameter.
all_pagesboolean–Fetch multiple pages up to max_pages.
beforestring–Only return Polar records before this time. Converted to Polar's exclusive to query parameter.
limitinteger–Local page-size hint used for pagination safety.
max_pagesinteger–Maximum pages to fetch when all_pages is true.
pageinteger–Polar page number.
privacy_modestring–Optional per-call privacy override. Defaults to POLAR_PRIVACY_MODE or structured. raw returns upstream Polar JSON. summary minimizes sensitive health and profile details.
response_formatstring––
NameTypeReqDescription
countintegeryes–
endpointstringyes–
has_morebooleanyes–
next_pageinteger––
pages_fetchedintegeryes–
privacy_modestringyes–
recordsarrayyes–

No examples provided.

polar_onboarding ~100

Read-only. Return the 11-question Delx Wellness onboarding flow (en or pt-BR), the current shared profile, missing critical fields, and a cross-connector hint. Use this when the user starts a fresh wellness session and you need to fill out preferred_name, goals, devices, training context, nutrition, preferences, and safety.

NameTypeReqDescription
localestring–Onboarding locale. Defaults to en.
response_formatstring––

No output schema declared.

No examples provided.

polar_privacy_audit ~37

Return local privacy, cache, token-path and env-presence posture without revealing secret values.

NameTypeReqDescription
response_formatstring––
NameTypeReqDescription
cache_enabledbooleanyes–
cache_pathstringyes–
config_sourcestringyes–
gps_redaction_defaultbooleanyes–
local_config_existsbooleanyes–
local_config_pathstringyes–
local_config_secure_permissionsboolean––
notesarrayyes–
privacy_mode_defaultstringyes–
projectstringyes–
raw_payloads_opt_inbooleanyes–
redacted_key_patternsarrayyes–
required_env_presentobjectyes–
secret_env_varsarrayyes–
stdout_safebooleanyes–
token_pathstringyes–
unofficialbooleanyes–

No examples provided.

polar_profile_get ~67

Read the canonical Delx Wellness profile shared with the other wellness MCP connectors (Nourish, Cycle Coach, CGM, etc.). Read-only. Profile stores only what the user typed during onboarding — never OAuth tokens, API keys, or biomarkers.

NameTypeReqDescription
response_formatstring––

No output schema declared.

No examples provided.

polar_profile_update ~129

Persist a partial patch to the canonical Delx Wellness profile. Requires explicit_user_intent=true after the user confirms they want to save. Rejects secret-like fields (oauth, token, api_key, password, cookie, refresh, session).

NameTypeReqDescription
explicit_user_intentboolean–Set to true ONLY after the user has explicitly confirmed they want to save this. Otherwise the tool refuses to write.
patchobjectyesPartial WellnessProfileDocument patch. Top-level keys: profile, goals, devices, training, nutrition, preferences, safety, notes.
response_formatstring––

No output schema declared.

No examples provided.

polar_quickstart ~61

Personalized 3-step setup walkthrough for the human user. Adapts to current state (env vars set? token present? what's next?). Call this first when the user asks 'how do I connect Polar?'

NameTypeReqDescription
response_formatstring––

No output schema declared.

No examples provided.

polar_revoke_access ~46

Delete the local Polar token file. Use only when the user explicitly wants to disconnect this MCP; revoke the remote grant from Polar if needed.

NameTypeReqDescription
response_formatstring––
NameTypeReqDescription
local_tokens_clearedbooleanyes–
notestringyes–
okbooleanyes–
token_pathstringyes–

No examples provided.

polar_weekly_summary ~104

Build a weekly Polar scorecard with sleep, activity, Nightly Recharge, training load context, bottlenecks and actions. Read-only and non-medical.

NameTypeReqDescription
compare_daysinteger–Prior comparison window in days. Use 0 to disable comparison.
daysinteger–Recent analysis window in days.
response_formatstring––
timezonestring–IANA timezone used only for display, e.g. America/New_York.
NameTypeReqDescription
generated_atstringyes–
kindstringyes–

No examples provided.

polar_wellness_context ~98

Normalize Polar Nightly Recharge, sleep and training load into the shared wellness_context shape for recommendation engines.

NameTypeReqDescription
daysinteger–Lookback window for normalized Polar wellness context.
injury_flagsarray––
notesstring––
response_formatstring––
sorenessarray––
timezonestring–IANA timezone used only for display, e.g. America/New_York.
NameTypeReqDescription
generated_atstringyes–
injury_flagsarrayyes–
notesarrayyes–
recent_training_loadstringyes–
sorenessarrayyes–
sourcestringyes–

No examples provided.

Install

How do I install the io.github.davidmosiah/polarmcp MCP server?

io.github.davidmosiah/polarmcp runs locally as an npm package, launched with npx -y polar-mcp-unofficial. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

npm · polar-mcp-unofficial

# add to Claude Code
claude mcp add davidmosiah-polarmcp -- npx -y polar-mcp-unofficial
Common questions

What is the io.github.davidmosiah/polarmcp MCP server?

io.github.davidmosiah/polarmcp is an MCP server listed in the public MCP registry as io.github.davidmosiah/polarmcp. Privacy-first unofficial Polar AccessLink v4 MCP server for AI health, sleep and training agents. This page covers its npm package (polar-mcp-unofficial).

Is the io.github.davidmosiah/polarmcp MCP server safe to use?

io.github.davidmosiah/polarmcp scores 81 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

What tools does the io.github.davidmosiah/polarmcp MCP server expose?

io.github.davidmosiah/polarmcp exposes 37 tools: polar_data_inventory, polar_agent_manifest, polar_capabilities, polar_quickstart, polar_demo, and 32 more. Their descriptions and schemas cost roughly 4,411 tokens of context every time the server is loaded.

Is the io.github.davidmosiah/polarmcp MCP server still maintained?

io.github.davidmosiah/polarmcp is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

What licence is the io.github.davidmosiah/polarmcp MCP server under?

io.github.davidmosiah/polarmcp declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

What did VerifyMCP test on the io.github.davidmosiah/polarmcp MCP server?

VerifyMCP ran 16 checks on io.github.davidmosiah/polarmcp, covering Malware scan, Known CVEs, Install scripts, Dependency health and 12 more. Endpoint Security and Transport & Reachability do not apply to an npm package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.