# gravl.ai — fitness — 2 of 5

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> Probe-verified (tier 2 of 3). Last checked 2026-09-26. 2 of 5 capability checks passed. 2 unknown.

- host: gravl.ai
- url: https://gravl.ai/
- category: fitness
- type: business
- language: en

## Probe-verified · tier 2 of 3

Probed live on 2026-09-26 against rubric v1.2. 2 of 5 checks passed. 2 unknown.

- UNKNOWN — Markdown negotiation (`Accept: text/markdown`)
- UNKNOWN — Markdown twin at a predictable URL (`/page.md`)
- PASS — llms.txt (`/llms.txt`)
- FAIL — API catalog (`RFC 9727`)
- PASS — MCP endpoint answers tools/list (`initialize → tools/list, no credentials`) · on 26 Sep 2026 · served from mcp.gravl.ai
  - ABSENT — MCP server card (`/.well-known/mcp/server-card.json`): absent; not scored
  - Platform-supplied: no; not scored
- FAIL — Other agent files at well-known paths (`agent-skills/index.json · oauth-authorization-server · oauth-protected-resource · http-message-signatures-directory`): none found; not scored

MCP tools (from tools/list on 2026-09-26, served from mcp.gravl.ai): get_mcp_options, get_all_settings, patch_training_goals, patch_general_preferences, patch_equipment_settings, patch_muscle_focus, patch_workout_settings, patch_warmup_settings, patch_rest_time_settings, patch_appearance_settings, get_system_splits, select_training_mode, list_custom_splits, get_custom_split, validate_custom_split, create_custom_split, update_custom_split, replace_custom_split_sessions, delete_custom_split, list_workouts, get_workout, validate_workout, create_workout, delete_workout, list_workout_templates, get_workout_template, validate_workout_template, create_workout_template, replace_workout_template, delete_workout_template, list_exercises, get_exercise, get_related_exercises, resolve_exercises, create_custom_exercise, list_equipment, get_equipment, list_gym_profiles, list_measurements, list_personal_records, get_exercise_history, get_training_summary, get_strength_scores

## Summary

AI personal trainer app for strength training offering personalized workout plans, real-time coaching, technique analysis, and progress tracking, integrated with Apple Health, Garmin, and Strava, serving users on iOS and Android.

## Context

390 sites in this index share the category "fitness"; 159 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark

How we found this site: probe discovery. This site didn't declare agent access — we found it by checking the open web. Everything above was tested the same way, against the same rubric, on the date shown. [How we choose what to check, and how to opt out](https://knowngood.sh/bot)

## Where this sits

- business: https://knowngood.sh/type/business
- fitness: https://knowngood.sh/category/fitness
- Browse: https://knowngood.sh/browse
- Rubric: https://knowngood.sh/benchmark