Grok BotLife adminHealthAI score · 77/100AI-assisted edit · no obvious prompt-injection riskX

Build a "Weight Watcher" Weight-Gain Food Coach with Grok Bot

Snap a photo → check against gain plan in real time → get 2–3 portioned options

BeginnerStepsTip
Who
People looking to gain weight or manage meals
You get
Create a custom Grok Bot that gives portioned food options from a photo
You need
Grok Bot

Constraints

Create a custom Grok Bot named "Weight Watcher", enter the food-rule prompt, then send meal photos in chat for real-time feedback.

What they did

RonXilla created a custom Grok Bot named "Weight Watcher" to act as a food coach for gaining back mass and muscle after heart trouble (targeting 22 lbs). He gave it a rule: offer 2–3 portioned options on every request, and be direct if he's over the plan.

How it went

The author reports it took about 30 seconds to set up and is actively using it by sending meal photos in real time (author report, unverified).

Worth knowing

Health-related: the author is regaining weight after a heart issue; this is not medical advice—consult a professional. Red-text conversation details in the screenshot were not transcribed in the source. Grok Bot creation UI specifics are not detailed; follow standard platform flow.

Steps

  1. Create and name the Bot

    Create a new custom Bot in Grok Bot and name it "Weight Watcher".

  2. Enter the food rule

    Paste the following rule into the Bot's system prompt or instructions field:

    Execution prompt · Source text。Grok Bot custom Bot system prompt or instructions field

    give me 2–3 options with portions every time I ask, and if I'm over, tell me straight.

  3. Use with photos

    Take a picture of your meal and send it to the Bot in chat to see how you're keeping up with the plan.

Prompt you can copy

Setup guidance · Source text。Hand to setup assistant to confirm Grok Bot creation access and custom Bot permissions

This block is the prompt. Ads are never placed here.

give me 2–3 options with portions every time I ask, and if I'm over, tell me straight.

Use the source prompt verbatim; do not rewrite.

Source

建一个增重版「Weight Watcher」饮食教练 Bot：拍餐照实时对照计划，每次给 2–3 个带份量的选项 · RonXilla · X · 2026-10-22T10:36:40.000Z

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