Weight Forecast

npx add-mcp 'https://weight-forecast.com/api/mcp'

Weight Forecast: know your goal-weight date.

Log food, sync Garmin, get a daily AI coach in Telegram.

• Landing: https://www.weight-forecast.com/
• App (sign in): https://weight-forecast.com/signin
• This markdown view: GET / with Accept: text/markdown (or GET /index.md)

What it does

Weight Forecast is a free web app (installable PWA) for logging food, weight, activity and habits. It:

• Logs food by photo, voice or text with Gemini calorie and macro estimates.
• Logs weight with a trend and an approximate goal-date forecast from your weigh-ins (straight-line fit, needs 3+ points).
• Connects to Garmin for daily summaries — steps, sleep, heart rate and similar. Workouts do not sync automatically.
• Offers optional Strava connection (beta, browser only).
• Plans workouts with Google Calendar sync and Telegram reminders.
• Includes a daily journal / notebook.
• Sends a daily AI coach plan to Telegram around noon via @weightlogtbot (the bot logs weight; food photos stay in the web app).
• Exposes an MCP server so ChatGPT and Claude can read and log your data.
• Supports data export and account delete.
• Is free — no paid tier.

Comparisons & methodology

• How the goal-date forecast works — linear regression on weigh-ins from the last 30 calendar days; approximate goal date, not a guaranteed accuracy figure.
• Weight Forecast vs MacroFactor
• Weight Forecast vs Happy Scale — Android/web alternative when Happy Scale is not available on your device.

For AI agents

This site publishes machine-readable discovery endpoints:

Purpose	URL
API catalog (RFC 9727)	/.well-known/api-catalog
OpenAPI description	/openapi.yaml
Agent skills index	/.well-known/agent-skills/index.json
Markdown alternate of this page	/index.md
Content usage signals	/robots.txt — see Content-Signal
In-page tools	navigator.modelContext (WebMCP) on page load
App MCP server	https://weight-forecast.com/api/mcp
OAuth metadata	https://weight-forecast.com/.well-known/oauth-authorization-server

WebMCP tools exposed on this page

• weight-forecast.openApp — navigate the user to the real application.
• weight-forecast.listArticles — enumerate the blog's long-form articles.
• weight-forecast.readArticle — fetch one article by slug.

Content usage

The site declares Content Signals in /robots.txt:

Content-Signal: search=yes, ai-train=no, ai-input=yes

Search indexing and grounded / RAG-style citations are welcome; training generative models on this content is not permitted.

FAQ

How does the goal-date forecast work? It fits a straight-line trend through your recent weigh-ins. The app shows a confidence label (high/medium/low) based on how many weigh-ins you have and how clear the trend is. It does not promise a ± kg accuracy.

Is it free? Free. No paid tier. Core tracking, food logging, Garmin summaries, Telegram coach, and the goal-date estimate are available at no cost.

What does the Telegram bot do? @weightlogtbot logs weight and delivers your daily AI coach plan around noon. Food logging stays in the web app — the bot does not accept food photos.

Does it work with Garmin? Yes — daily summaries such as steps, sleep and heart rate sync. Workouts do not sync automatically.

Does it work offline? Yes; it's a PWA with local storage and background sync.