MCP · Included with FitMaxx Pro
Log sets, explore your training history, and build a progress dashboard that’s entirely yours. Connect your AI assistant to FitMaxx.
Sign in with Apple or Google. Use your existing FitMaxx account.
An example of what your agent can build. Your data. Your layout.
Connect once. Keep training.
You’ll need an active FitMaxx Pro subscription and the Apple or Google account you use in the app.
https://api.fitmaxxx.com/mcpWith the Codex CLI installed, run these commands in Terminal:
codex mcp add fitmaxx --url https://api.fitmaxxx.com/mcp
codex mcp login fitmaxx --scopes profile:read,workouts:read,workouts:write,body:read,body:write,training:read,data:export,offline_accessComplete sign-in in your browser, approve access, then start a new Codex session. Check the connection with codex mcp list.
Use FitMaxx to show my profile.Start with a question
Give your agent your training history and a design brief. Create a local HTML page with the charts, comparisons, and layout you want.
Use FitMaxx to fetch my last 90 days of workouts and body measurements, including all pages. Build a local HTML dashboard with charts and date filters. Show gaps honestly and keep the page local unless I ask to publish it.Log exercises and body measurements from your assistant, then see them in FitMaxx.
Log three sets of barbell bench press at 50 kg, eight reps each.Look across your history to understand how your training is changing.
Use FitMaxx to compare my bench press performance over the last eight weeks. Show working weights, reps and training frequency, and flag missing data.Your account. Your choice.
FitMaxx MCP is included with every active Pro plan. Sign in using the same Apple or Google account you use in the app and review the permissions you approve.
Your assistant can access only the data and actions allowed by those permissions. Information requested through an assistant is shared with that assistant’s provider.
Manage connected appsDisconnect to revoke future access. This does not erase copies already saved by your assistant or exported into a dashboard.
A few useful answers
Model Context Protocol is a standard that lets an AI assistant use external tools. FitMaxx provides those tools so your assistant can read your training data and perform actions you authorize.
Check that your subscription is active and that you signed in with the same provider and account as in FitMaxx. An Apple login and a Google login can belong to different accounts. Restore purchases in the app if needed, then retry. If access still fails, contact support@fitmaxxx.com.
There is no separate FitMaxx MCP subscription. You need active FitMaxx Pro access. Your AI assistant may have its own subscription or account requirements.
Codex has passed checks for reads, writes and token refresh. Claude Code, Claude and ChatGPT guides are setup previews until their end-to-end checks are complete.
Check your Pro subscription and reconnect through your assistant’s MCP settings. In Codex, rerun codex mcp login fitmaxx. To switch accounts, revoke the old connection in Connected apps, then sign in again with the correct account.
Your agent can fetch a paginated snapshot of supported fitness data. Exports are bounded to 100,000 rows and 100 MiB, and snapshots expire after 24 hours. Ask your agent to fetch every page and show any limits or missing data. A downloaded dashboard is a snapshot; refresh it to include later workouts.
The endpoint uses Streamable HTTP with OAuth and PKCE. Read scopes: profile:read, workouts:read, body:read, training:read. Write scopes: workouts:write, body:write. Export uses data:export; ongoing access uses offline_access.
Tools cover profiles, workout sessions and sets, body check-ins, training history, progress and exports. Your client discovers the available tools after authentication. REST grants can download JSON or NDJSON exports; MCP grants use paginated tool results.
Public API schema (OpenAPI JSON) ↗