Codex plans your lifting. Tally logs every set.

Codex reads your training history. With a Read and plan key, it also writes planned workouts to the Tally app. With a Full access key, it can also log, change or delete finished workouts when you ask. You can undo each change for 7 days.

You are on a phone or tablet. Setting up Codex needs a computer, so do this in two parts.

Get Tally now

Download on the App Store

Connect later on your computer

Opens the share sheet: AirDrop, Messages or Notes.

See the config

[mcp_servers.tally]
url = "https://mcp.tallyworkout.app/api/mcp"
bearer_token_env_var = "TALLY_API_KEY"

export TALLY_API_KEY=your-key

Use Claude on your phone instead? Connect Claude from its directory. No computer needed.

01
Get Tally and create a key
In Tally, open Settings → API keys → Create key. Pick Codex. Pick Read only, Read and plan so Codex can add workouts, or Full access so it can also log, change or delete finished workouts. You can undo each change for 7 days. Copy the key. Tally shows it once.
Download on the App StoreScan with your iPhone camera to open Tally on the App Store.

Add this block to ~/.codex/config.toml

[mcp_servers.tally]
url = "https://mcp.tallyworkout.app/api/mcp"
bearer_token_env_var = "TALLY_API_KEY"

03
Put the key in your shell profile
For example ~/.zshrc. Put your key in place of your-key.
```
export TALLY_API_KEY=your-key
```
04
Open a new terminal, then start Codex.

Ask for your week

Plan 4 lifting days for next week. Go easy on my shoulder.

An iPhone with Tally and a Codex chat that adds 4 workouts to Tally.

What Codex can do

Read your training history, progress and planned days
With a Read and plan key: plan, change, move or skip planned days
With a Full access key: log, change or delete finished workouts. You can undo each change for 7 days.

All 21 tools in the builder reference

If something goes wrong

Codex does not see Tally.: Open a new terminal after you edit your shell profile, so Codex can read TALLY_API_KEY.
Codex cannot add workouts.: The key is Read only. Create a new key and pick Read and plan.
The key does not work.: Copy the whole key. If you lost it, revoke it in Settings → API keys and create a new one. Tally shows a key only once.
The server address does not work.: Use https://mcp.tallyworkout.app/api/mcp. The address tallyworkout.app is the website, not the API.
Steps not working?: Email support@tallyworkout.app.

Codex plans your lifting. Tally logs every set.

What Codex can do

If something goes wrong

Other agents