A free Telegram bot that monitors public channels for your keywords and notifies you the instant a post matches.
Try it now: @telescope_one_bot · Website
| Platform | Telegram (works in any Telegram client - iOS, Android, Web, Desktop) |
| Price | Free · Premium tier coming soon |
| Free tier limits | 3 channels, 50 keywords per user |
| Check interval | Every minute |
| Languages | English, Russian |
| Channel type | Public channels only (no private channels or DMs) |
| Data stored | Telegram user ID, your channel list, your keywords - no message content |
Telescope is a Telegram bot that watches public channels for you and sends a notification the moment a keyword appears in a new post.
Looking for a way to monitor Telegram channels for keywords, track mentions across Telegram, get alerts from public chats, or follow a topic without reading every post yourself? That's exactly what Telescope does.
Set it up once - never miss a relevant post again.
Use cases:
- Track mentions of your brand, product, or competitor
- Monitor job postings or apartment listings in niche channels
- Follow specific topics across news channels
- Get alerts on keywords in communities you don't want to read manually
- OSINT / open-source monitoring of public Telegram activity
- Keep an eye on channels without joining or reading them yourself
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🔔 Real-time monitoring - new posts checked every minute
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🔑 Smart keyword matching
- Single word -> prefix match (
footballmatchesfootballer) - Number -> exact match (
2026won't match20261) - Phrase -> full phrase match (
rent apartment)
- Single word -> prefix match (
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🚫 Exclude keywords - filter out noisy matches with keywords you want the bot to ignore
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📡 Multiple input formats - add channels by
@username,t.me/link, or web Telegram URL
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🔑 Keyword management - add, view, and remove keywords on the fly
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🌐 Two languages - English and Russian
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💬 In-app feedback - report a bug or leave feedback right from the bot menu, no need to leave the chat
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🗑️ Full data deletion -
/deletedataremoves everything, no questions asked
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Is there a bot that notifies me when a keyword appears in a Telegram channel? Yes - Telescope does exactly this. Add a channel, add a keyword, get an instant notification when it matches.
How do I track mentions of my brand or product on Telegram? Add the channels you care about and your brand name as a keyword - Telescope checks new posts every minute and notifies you the moment it matches.
What's included in the free tier? Up to 3 channels and 50 keywords per user, checked every minute. A Premium tier is planned: higher limits, per-channel keyword filters, priority sweeps, and webhooks/API to send matches into your own apps (Slack, Notion, your own service).
Can I monitor a Telegram channel without joining it? Yes - Telescope only needs the channel to be public; you don't have to join or be a member.
Can I monitor private channels or groups? No - only public channels, the kind anyone can read without an invite. This is the same restriction every Telegram bot has.
Can I exclude certain words from matching? Yes - add exclude keywords to filter out matches you don't want, without having to drop the main keyword entirely.
How fast are alerts? The bot checks channels every minute, so you'll typically see a matching post in your DMs within 60-120 seconds of it going live.
Are keywords case-sensitive? No. Matching ignores case and works across English, Russian, and other Unicode scripts.
Do you store the posts? No - only enough to avoid sending you the same match twice. Post text is checked against your keywords and not kept.
How do I delete my data?
Send /deletedata in the bot - everything tied to your account is removed immediately.
Does this work for apartment listings, job postings, or niche marketplace channels? Yes - any use case where you want an instant alert on a keyword in a public channel works: real estate, jobs, deals, brand mentions, news topics, and more.
| Free | Premium (coming soon) | |
|---|---|---|
| Channels | 3 | More |
| Keywords | 50 | More |
| Check interval | Every minute | Priority |
| Per-channel keyword filters | — | ✓ |
| Webhooks / API | — | ✓ |
| Command | Description |
|---|---|
/start |
Main menu |
/help |
Guide and keyword syntax |
/language |
Switch language (ru/en) |
/deletedata |
Delete all your data |
Changes are tracked in CHANGELOG.md. A shorter, user-facing version of the same updates is also shown on the website.
Built with:
- Java 17 + Spring Boot
- PostgreSQL - user data and channel state
- telegrambot4j - my own open-source Java library for Telegram bots
- heartbeat4j - my own open-source health-check library, used to catch background monitoring loops that silently stop ticking
- Custom Telegram API layer for channel monitoring
The code is closed-source, but
telegrambot4jandheartbeat4j- the libraries powering this - are open and available on GitHub
The bot stores only: your Telegram user ID, your entered list of channels, and your keywords. No message content is stored. Use /deletedata to remove everything at any time.
Found a bug or have a feature request? Use the 💬 Contact support button right in the bot, or reach out directly: @nomad4tech
Made by @nomad4tech · Powered by telegrambot4j and heartbeat4j