This article provides a complete, practical walkthrough of the Http Telegram Monitor Webhook n8n agent. It connects HTTP Request, Webhook across approximately 1 node(s). Expect a Intermediate setup in 15-45 minutes. One‑time purchase: €29.

What This Agent Does

This agent orchestrates a reliable automation between HTTP Request, Webhook, handling triggers, data enrichment, and delivery with guardrails for errors and rate limits.

It streamlines multi‑step processes that would otherwise require manual exports, spreadsheet cleanup, and repeated API requests. By centralizing logic in n8n, it reduces context switching, lowers error rates, and ensures consistent results across teams.

Typical outcomes include faster lead handoffs, automated notifications, accurate data synchronization, and better visibility via execution logs and optional Slack/Email alerts.

How It Works

The workflow uses standard n8n building blocks like Webhook or Schedule triggers, HTTP Request for API calls, and control nodes (IF, Merge, Set) to validate inputs, branch on conditions, and format outputs. Retries and timeouts improve resilience, while credentials keep secrets safe.

Third‑Party Integrations

• HTTP Request
• Webhook

Import and Use in n8n

1. Open n8n and create a new workflow or collection.
2. Choose Import from File or Paste JSON.
3. Paste the JSON below, then click Import.
4. Show n8n JSON

   **Title:**  
   Automated TRON USDT Blacklist Checker with Telegram and n8n
   
   **Meta Description:**  
   Discover how to create a Telegram-based TRON wallet blacklist checker using n8n. This automation leverages the Tronscan API to verify if a wallet is blacklisted for USDT activity—delivering results instantly to Telegram users.
   
   **Keywords:**  
   n8n, Telegram bot, Tron wallet, USDT blacklist, Tronscan API, crypto security, automation, wallet address checker, blacklist detection, blockchain monitoring, stablecoin compliance, Telegram crypto bot
   
   **Third-Party APIs Used:**  
   - Tronscan API – Endpoint: `https://apilist.tronscanapi.com/api/stableCoin/blackList`
   
   ---
   
   # Automated TRON USDT Blacklist Checker with Telegram and n8n
   
   With the surge in USDT (Tether) activity on the TRON blockchain, so has grown the need for tools that simplify the process of identifying blacklisted wallet addresses. Whether you're a crypto enthusiast, a blockchain developer, or a DeFi service provider, ensuring that your counterparty wallet is compliant and not blacklisted can be critical.
   
   Meet the **Telegram TRON Wallet Blacklist Checker** — a powerful no-code automation built in n8n that lets users check the blacklist status of any TRON wallet directly via a simple message on Telegram.
   
   ## What the Workflow Does
   
   At its core, this workflow integrates with Telegram, listens for wallet address messages, verifies proper address formatting, and then uses the Tronscan API to check whether the inputted address has been blacklisted due to suspicious or noncompliant activity involving USDT.
   
   Let's explore the individual elements that make it happen.
   
   ### Step 1: Telegram Bot Integration
   
   The journey begins with the **Telegram Trigger Node**, which listens to incoming messages in a configured Telegram bot. When a user sends a message—ideally a TRON wallet address starting with `T` followed by 33 alphanumeric characters—the workflow wakes up.
   
   Example of a valid wallet:  
   `TQUREoX9h6fGzmmhAJjKTzHzFvqvd6gQaZ`
   
   ### Step 2: Wallet Address Validation
   
   Following the trigger, the workflow routes the message to the **“Check Wallet Address Format”** node. This step uses a regular expression to validate TRON wallet formatting:
   ```regex
   T[A-Za-z1-9]{33}
   ```
   If the format is correct, the workflow proceeds to the API check. If not, it sends a user-friendly error message via Telegram:  
   “Please enter your wallet address correctly and completely.”
   
   This ensures users get immediate feedback without needing to debug or research wallet formats.
   
   ### Step 3: Querying the Tronscan Blacklist API
   
   Once the wallet format is validated, the process moves to an **HTTP Request Node** that queries the Tronscan API:
   
   ```
   https://apilist.tronscanapi.com/api/stableCoin/blackList?blackAddress={walletAddress}
   ```
   
   This API returns structured data indicating whether the address exists in the blacklist and, if so, offers additional context in the `data` field.
   
   ### Step 4: Parsing API Response
   
   The next step—handled via a **JavaScript Code Node**—is to analyze the API's response. If the `total` field indicates one or more blacklisted entries, a warning message is composed dynamically:
   ```js
   🚨🛑 This Wallet is Blacklisted! 🛑🚨
   ```
   If there are no matches, the message returned is:
   ```js
   ✅💚 This Wallet is NOT Blacklisted! 💚✅
   ```
   
   ### Step 5: Instant Telegram Response
   
   The final piece of the automation involves sending the response message (either an error notification or blacklist status) directly back to the user on Telegram. Messages are sent in reply to the initial user message to maintain conversational context.
   
   This seamless flow not only makes the system feel interactive but also provides high responsiveness without any code from the user’s side.
   
   ## Why This Workflow Matters
   
   In today’s increasingly decentralized financial ecosystem, quick access to compliance and risk information is vital. This workflow turns n8n into a decentralized compliance assistant, allowing anyone to:
   
   - Check TRON USDT blacklist status effortlessly.
   - Automate manual address checks.
   - Educate users who mistype or misunderstand wallet structures.
   - Integrate with Telegram, a commonly used app amongst crypto communities.
   
   And since n8n is open-source and extensible, you can modify this workflow to support other blockchains, different APIs, or to log lookups for auditing.
   
   ## Future Enhancements
   
   Some ways to make this even more powerful include:
   
   - Adding profanity filtering or anti-spam logic.
   - Logging results to Google Sheets or Airtable for record-keeping.
   - Expanding beyond just USDT wallets—for example, tracking transactions or DeFi address history.
   - Creating a web-based UI companion for users not using Telegram.
   
   ## Conclusion
   
   This n8n-powered automation workflow beautifully demonstrates how no-code tools can bring powerful backend functionality to easily accessible user interfaces like Telegram. Whether you’re auditing wallets, managing risk, or building community bots, this approach gives you the tools to empower your users directly and instantly.
   
   A small step for a Telegram bot—one giant leap for decentralized compliance.
   
   ---
   
   🛠 Ready to build your own crypto compliance assistant? Try setting up this workflow on your own instance of n8n and watch your Telegram bot take on blockchain blacklists in real-time.

5. Set credentials for each API node (keys, OAuth) in Credentials.
6. Run a test via Execute Workflow. Inspect Run Data, then adjust parameters.
7. Enable the workflow to run on schedule, webhook, or triggers as configured.

Tips: keep secrets in credentials, add retries and timeouts on HTTP nodes, implement error notifications, and paginate large API fetches.

Validation: use IF/Code nodes to sanitize inputs and guard against empty payloads.

Why Automate This with AI Agents

AI‑assisted automations offload repetitive, error‑prone tasks to a predictable workflow. Instead of manual copy‑paste and ad‑hoc scripts, your team gets a governed pipeline with versioned state, auditability, and observable runs.

n8n’s node graph makes data flow transparent while AI‑powered enrichment (classification, extraction, summarization) boosts throughput and consistency. Teams reclaim time, reduce operational costs, and standardize best practices without sacrificing flexibility.

Compared to one‑off integrations, an AI agent is easier to extend: swap APIs, add filters, or bolt on notifications without rewriting everything. You get reliability, control, and a faster path from idea to production.

Best Practices

• Credentials: restrict scopes and rotate tokens regularly.
• Resilience: configure retries, timeouts, and backoff for API nodes.
• Data Quality: validate inputs; normalize fields early to reduce downstream branching.
• Performance: batch records and paginate for large datasets.
• Observability: add failure alerts (Email/Slack) and persistent logs for auditing.
• Security: avoid sensitive data in logs; use environment variables and n8n credentials.

FAQs

Can I swap integrations later? Yes. Replace or add nodes and re‑map fields without rebuilding the whole flow.

How do I monitor failures? Use Execution logs and add notifications on the Error Trigger path.

Does it scale? Use queues, batching, and sub‑workflows to split responsibilities and control load.

Is my data safe? Keep secrets in Credentials, restrict token scopes, and review access logs.