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Compare scores, permissions, risks, and fit in one decision-focused table.

DimensionIntervals.icu MCP ServerConnect Claude and ChatGPT to the Intervals.icu API through MCP.Hevy MCPManage your Hevy workout data from AI assistants via MCP.
FMRS52 / 100 · D77 / 100 · B
Reliability8 / 2012 / 20
Security and permissions8 / 2016 / 20
Maintenance11 / 2016 / 20
Documentation13 / 2018 / 20
Setup experience12 / 2015 / 20
Best for
  • Athletes who use Intervals.icu for training data.
  • Users who want to query and manage Intervals.icu data through Claude Desktop or ChatGPT.
  • Development or analysis workflows involving activity, wellness, event, and power data.
  • Hevy PRO users who want AI assistants to directly access their workout data
  • People who prefer using MCP clients like Claude, Cursor, Codex for fitness tracking
  • Anyone needing summaries and insights from their training data
Not for
  • Users who do not use Intervals.icu.
  • Users unwilling to provide an Intervals.icu API key and athlete ID.
  • Read-only scenarios where event or custom-item write and delete operations are not wanted.
  • Users without a Hevy PRO subscription (API key required)
  • Users who want to use the server without an API key
  • Those needing delete workflows (Hevy API does not expose delete endpoints)
Required permissions
  • Requires an Intervals.icu API key and athlete ID.
  • Configuration includes INTERVALS_API_BASE_URL, ATHLETE_ID, API_KEY, and LOG_LEVEL.
  • Permissions cover reading activities, wellness data, events, and custom items; events and custom items also support creation, updates, and deletion.
  • Requires HEVY_API_KEY environment variable for Hevy API authentication
  • Can create, update, and replace workouts, routines, folders, templates, and body measurements via tools
  • Read operations can fetch workouts, routines, folders, templates, history, and user info
Risks and side effects
  • The API key is sensitive and should not be exposed or committed to a repository.
  • The server includes event and custom-item deletion tools, so misuse can cause data loss.
  • ChatGPT SSE setup requires a public server URL or port forwarding; an unprotected public endpoint may broaden access.
  • Write operations can modify workouts, races, notes, and custom items in Intervals.icu.
  • API key can be misused if leaked; do not expose in URLs, logs, or screenshots
  • Create operations may produce duplicates on retry; update operations replace existing records
  • The server sends data to the Hevy API and may send telemetry to external services unless disabled
Supported clientsClaude Desktop, ChatGPTClaude Desktop, Cursor, Codex, Antigravity
Tools1626