Building Chat-Based Trading Terminals for Telegram

We're on a mission to build a chat-based trading terminal for Telegram that not only meets deadlines but also sticks to app store rules. Our aim is to let users make trades in less than two minutes from their very first tap--that’s pretty cool, right? To get there, we’ll be using TON, Mini Apps, and payment options that are all above board. Let’s make it happen! Here’s a handy guide for you! It’s filled with ready-to-use patterns, the freshest updates on Telegram and TON, plus some practical go-to-market strategies that you can get rolling with this quarter. Enjoy diving in! Check it out: (core.telegram.org).

Building Chat-Based Trading Terminals for Telegram

The headache your team is already feeling

So, you've got this super-fast matching engine that can handle orders in just 5 milliseconds, which is pretty impressive. But it looks like your Telegram prototype still has a few quirks to work out.

• When a campaign gets really busy, it tends to time out with those pesky 429 errors. The bot can handle about “~30 messages per second” before hitting a limit, and that's what causes those callback flows to get a bit jammed up. Hey, if you want to dive deeper into the limits, just click on this link and you'll find all the info you need!
• It doesn’t meet the policy guidelines from Apple and Google when it comes to in-app digital purchases, and that could result in it getting removed or quietly distributed behind the scenes. The reason this is happening is that you’re not making the most of Stars when you really should be. If you want to dive deeper into the topic, check out this blog. It's got all the details you need! Hey there! It looks like you're losing around 30-60% of users when they try to connect their wallets. Right now, the whole process is a bit of a pain. They have to jump between apps, hunt down a seed, and approve stuff without really knowing what’s going on. It’s definitely not the smoothest experience! If you want to dive deeper into the details, you can check it out here. Hey there! Just a heads up - it looks like you’ve fallen behind on the deadlines for Europe’s MiCA regulations and the Travel Rule messaging handshakes. This could really jeopardize your EU roadmap, both from a legal standpoint and a technical one. So, it might be time to get back on track! If you want to dive into the details, you can check it out here. It's worth a look!

In late 2024 and into 2025, the Mini App user experience really took a big step up. We’re diving into everything from full-screen experiences to creating quick shortcuts right on your home screen. Plus, we’ve got secure local storage, Stars subscriptions, and the ability to tap into device sensors. Exciting stuff! All these features are designed to really enhance the user experience and keep folks coming back--just make sure to integrate them the right way! Take a look at this: (core.telegram.org).

The risk of waiting one more sprint

• Missed launch windows: So, Telegram Mini Apps have really leveled up! They’re all about giving you that sweet full-screen vibe, and guess what? You can even pin them right to your phone’s home screen for easy access. How cool is that? In the meantime, while you’re still tackling those annoying chat delays, your competitors are already launching their slick “1-tap” trading features.
  Check it out here.
• App Store Compliance Alert: If you’re dealing with Mini Apps, just a heads up--make sure to sell any digital goods through Telegram Stars on both iOS and Android. Don’t want any surprises later! If you brush this off, you might be missing out on some serious opportunities for getting your product out there and growing your business. If you're looking for more information, you can check it out here.
• EU Market Entry on Hold: So, starting June 30, 2024, the new stablecoin regulations from MiCA are going to be in effect. And just a little later, by December 30, 2024, you'll have to follow all the complete CASP responsibilities. By July 1, 2026, most of the transitional arrangements are set to wrap up. So, thinking about building a trading terminal and skipping the regulations? That could really land you in hot water and might even result in some serious shutdowns. Not the best way to go! For all the details, check it out here. You'll find everything you need!
• Execution quality delta: Retail activity on Solana and TON is really starting to vibe with Telegram trading bots like Trojan, BONKbot, and Maestro. These bots are effortlessly moving billions, which is pretty impressive! So, your product really needs to keep up with those super speedy expectations. If you’re curious to dive deeper into this topic, check it out here. It’s a great resource!

7Block Labs methodology for Telegram trading terminals

We’ve put together an awesome system that blends a great Mini App experience with secure payment options and quick order routing. It’s super easy to buy, audit, and scale, so you can get started without any hassle! We've set up our delivery process in stages, which lets Procurement, Risk, and Engineering give their thumbs up on everything without slowing down our path to market. It keeps things moving smoothly!

1) Telegram‑native UX that reduces “tap debt”

• Mini App Patterns Hey, have you considered trying out a full-screen trading interface? It could really enhance your experience. Also, adding a shortcut to your home screen would be super convenient. Plus, how about a little background "mini app bar"? That way, you can effortlessly juggle between different chats while you trade. Just a thought! Take a look at this: (core.telegram.org). You might find it really interesting!
• Make sure to check out DeviceStorage/SecureStorage, which you can find starting from Bot API version 9.

1. This helps us keep an eye on local session states and preferences that don't involve any personally identifiable information (PII). That way, you can skip those pesky extra trips! If you want to learn more, check it out here: (core.telegram.org).

• Auth Hey, just a quick reminder! Make sure to check the WebApp initData on your backend using HMAC-SHA256. Don’t forget to key it with your bot token under “WebAppData.” It’s super important to keep things secure! This is a pretty great method to connect a Telegram user with their trading account, all while making sure everything stays secure and tamper-proof. For details, visit (stackoverflow.com). If you're in need of some third-party validation--maybe for something like a fraud detection service--check out Telegram's Ed25519 signature flow. It's a solid option! This keeps your bot token safe and sound, so you don't accidentally share it with anyone. Take a look at it here: blogfork.telegram.org. You might find some interesting stuff!
• A Wallet Connect That Keeps User Privacy Intact. Have you thought about giving TON Connect 2 a try?
  So, we’ve got this awesome setup called x. It comes packed with manifest hosting, a bunch of UI components, and even an HTTP/JS bridge specifically for Telegram WebViews. Pretty neat, right? It holds your keys securely right in your wallet, plus it keeps all the permissions right where you need them. If you want to dive deeper into this, check it out here: docs.ton.org. There’s a lot of great info!
• If you’re looking for EVM or Solana support, no worries! We can definitely work with those using deep links, but just know that we’re keeping the TON rail as the smoothest choice right inside Telegram.

Useful Internal Capabilities You Can Lean On:

• Take a look at our Mini App frontend patterns by exploring our web3 development services and our dApp development solutions. You'll find some cool stuff there!

2) Payments, subscriptions, and settlement that pass review

• Digital goodies and premium features on Telegram: We’re excited to introduce Stars for billing and subscriptions! You’ll also be able to swap your Stars for discounts on Telegram Ads, which is a great way to keep those customer acquisition costs down. Hey, I've got some good news! We've seen a nice little 20-30% drop in our effective media costs, all thanks to those ad credit discounts from Stars. How awesome is that? (theblock.co).
• On-chain settlement for trades, fees, and withdrawals: Hey everyone! Just a heads up--starting April 19, 2024, you’ll be able to use native USDT on TON (and even XAUt). This means you can make super low-cost peer-to-peer transactions and really amp up liquidity on DEX. Pretty cool, right? (tether.io).
• Merchant rails for transactions outside of Telegram: Take a look at our TON payment libraries--things like the Ton Pay SDK and the ton.org payments hub. They make it super simple to accept TON, USDT, and Jettons right on your website. Plus, we’ve got a seamless TonConnect integration to make everything run smoothly! (docs.tonpay.tech).

We handle everything when it comes to setting up and reviewing this tech stack. You can count on us for our blockchain integration and security audit services.

3) Execution core that hits trader SLAs

• TON DEX Connectivity Hey there! If you're looking for a smooth way to explore pools, grab quotes, and make swaps, you should definitely take a look at the STON.fi SDK/REST. It makes everything super straightforward! Plus, with Omniston aggregation, you can rest easy knowing you’ll get the best execution across all TON liquidity. (docs.ston.fi).
• Solana Connectivity (Optional)
• If you're looking to step things up a bit, you should check out Jupiter routing along with Jito bundles and those priority fees. This combo really shines when you need lightning-fast inclusion that's tough against MEV, especially during those hectic times. It’s a real lifesaver! (docs.solanaappkit.com).
• Orderflow Engineering We've set up some pretty cool smart order routing (SOR) that includes p95 and p99 latency tracking. Plus, we have adaptive slippage mechanisms to keep things running smoothly. Oh, and don't worry about those annoying 429 errors--we've got handy “kill-switch” circuit breakers at the chat level to handle them when they show up.
• Pre-upload metadata? You bet! And just so you know, we have these cool idempotent outbox patterns in place for buying and selling flows. This means your UI won't get stuck in endless retry loops. We've got your back!

Hey there! If you’ve got your own matching engine or market-maker system up and running, we can totally connect using FIX 4. 4/5. We incorporate 0 or WebSocket L3 feeds into our cross-chain solutions and custom blockchain development services. If you're curious, you can check them out for more details!

4) Compliance by design (MiCA + Travel Rule)

• EU scope: Hey there! It's time to gear up for some MiCA-ready toggles to make stablecoin operations smoother. We're talking about everything from issuer disclosures and record-keeping to hitting those key milestones for CASP passporting. Let’s get this show on the road! Hey, just wanted to give you a quick heads-up! The stablecoin Titles III and IV are officially launching on June 30, 2024. Then, the rest of the provisions will roll out by December 30, 2024. Mark your calendar! Just a heads up, the transitional windows are set to be finished by July 1, 2026. If you want to dive deeper into it, you can check it out here.
• Travel Rule: Just a quick reminder to ensure that the messaging from your VASP matches up with the fields in IVMS 101. It’s important to keep everything aligned! Just a quick reminder: make sure to link your Telegram users to their verified KYC profiles. And, of course, it’s super important to keep any personal info out of the chat messages. How about we keep that info somewhere else, like off-chat, and just use signed references instead? It’ll make things a little smoother!
• Audit trail: Make sure to keep track of the retry_after, scope, and rate-limit headers for those forensic latency checks. Just remember, it's important to avoid any personal identification information (PII) while you’re at it!

5) Bot throughput and reliability patterns that survive virality

Telegram doesn’t share its hard limits too openly, but if you can navigate the usual constraints, you’ll definitely avoid running into those annoying 429 errors! Here are a few strategies you might want to think about:

• Global throttling: Try to keep it around 30 messages per second for each bot, so we don’t overwhelm anything! Aiming for around 25 messages per second is a solid goal. It's also a smart idea to keep your “latency-critical” tasks separate from those “bulk notify” tasks. That way, you can manage everything more efficiently! If you want to dive deeper into the details, just head over here.
• Per-chat shaping: Just a heads up, it's important to respect the retry_after settings for each chat. And remember, let’s not block those callback responses! It’s a good idea to keep an eye on which chats are causing trouble. That way, you can handle the tricky ones without throwing everything else off balance. Hey, take a look at this site for some cool insights! You might find it really interesting.
• Worker design:
  Alright, here’s the deal: you should totally set up an outbox alongside a rate-aware dispatcher, something like Redis or Stream. This combo is great because it can handle hiccups really well. The key is to make sure that if something does go wrong, you’re prioritizing dropping analytics data instead of losing any important actions. This way, you keep the crucial stuff safe and sound! Make sure to add idempotency keys for your swap and withdraw commands. This way, you can guarantee that messages get delivered just once by using message hashes. It’s a great way to avoid any mix-ups!

You’ll find this layer as part of our security audit services, and it’s also a key feature in our evaluations for smart contract development solutions.

Verify Telegram Mini App auth on your backend

// Node.js/TypeScript -- validate Telegram WebApp initData
import crypto from 'crypto';
export function validateInitData(initData: string, botToken: string): boolean {
  const urlDecoded = decodeURIComponent(initData);
  const pairs = urlDecoded
    .split('&')
    .filter(p => !p.startsWith('hash='))
    .map(p => p.split('='))
    .sort((a, b) => a[0].localeCompare(b[0]));
  const dataCheckString = pairs.map(([k, v]) => `${k}=${v}`).join('\n');

  const secretKey = crypto.createHmac('sha256', 'WebAppData').update(botToken).digest();
  const hmac = crypto.createHmac('sha256', secretKey).update(dataCheckString).digest('hex');

  const hash = new URLSearchParams(urlDecoded).get('hash');
  return hmac === hash;
}

Hey there! If you're looking for a way to get third-party validation without having to share your token, you should definitely check out Telegram's Ed25519 signature method. It's super useful and can really make your life easier! If you want to get into the nitty-gritty, check this out: Stack Overflow. It's got all the details you need!

TON Connect inside Telegram WebView

// React in a Telegram Mini App WebView
import { TonConnectUIProvider, TonConnectButton, useTonConnectUI } from '@tonconnect/ui-react';

export default function App() {
  return (
    <TonConnectUIProvider manifestUrl="https://your.app/tonconnect-manifest.json">
      <Header />
      {/* trading UI here */}
    </TonConnectUIProvider>
  );
}
function Header() {
  const [ui] = useTonConnectUI();
  return (
    <header>
      <TonConnectButton />
      <button onClick={() => ui.openModal()}>Connect Wallet</button>
    </header>
  );
}

TON Connect keeps your keys safe right in your wallet apps. Your Mini App can only see the transactions that you've given the thumbs up to and a bit of account info. Hey, take a look at this: (docs.ton.org). It’s really cool!

Example C -- Swap on STON.fi from a TON address

// Quote + build swap on TON via STON.fi REST + SDK
import { Router, Address, toNano } from '@ston-fi/sdk';
// 1) Get route/quote from STON.fi REST: GET /v1/quote?in=USDT-jetton&out=TON&amount=...
// 2) Build & send using SDK
const router = new Router(provider, sender); // provider: Ton HTTP; sender: TonConnect wallet adapter
const tx = await router.swap({
  offerAmount: toNano('100'),            // 100 USDT (scaled)
  offerJettonAddress: Address.parse(USDT),
  askJettonAddress: Address.parse(TON),
  slippageTolerance: 0.005,              // 0.5%
  referral: Address.parse(REF_ADDRESS)   // optional referral vault
});
await tx.send();

STON.fi has got a super convenient REST and TypeScript SDK, plus they’ve got this cool feature called Omniston aggregation that connects you with TON liquidity. It makes things a whole lot easier! Feel free to take a look at the details right here: (docs.ston.fi).

Example D -- Telegram‑safe rate limiter (no 429 storms)

// Pseudocode: per-bot global budget + per-chat shaping
for (const job of queue) {
  const chat = job.chatId;
  const now = Date.now();

  if (globalBudget.remaining() < 1) { await sleep(globalBudget.resetIn()); continue; }

  const chatBudget = getChatBucket(chat);
  if (!chatBudget.allow()) { defer(job, chatBudget.resetIn()); continue; }

  try {
    await send(job); globalBudget.consume(1);
  } catch (e) {
    if (e.code === 429) {
      const wait = e.retry_after_ms || 1000;
      if (e.scope === 'chat') chatBudget.blockFor(wait); else globalBudget.blockFor(wait);
      defer(job, wait);
    } else throw e;
  }
}

Engineers really need to keep an eye on retry_after and the scope to find those busy chats. This way, they can make sure the rest of the system runs smoothly and stays responsive. (fyw-telegram.com).

EMERGING BEST PRACTICES -- Jan 2026 and forward

Kick things off with TON rails in Telegram, and only explore cross-chain options if they actually boost price discovery. Hey, great news! The USDT/XAUt on TON is all set and live! Plus, you can find wallets and on-ramps just about everywhere you look. (tether.io).

• Imagine Stars as your go-to in-app billing buddy. You can trade Stars for TON, which helps you snag some ad credits and lower your total Customer Acquisition Cost (CAC). Pretty neat, right? (theblock.co).

To boost Mini App performance, it’s a good idea to warm up those connections beforehand. Also, don’t forget to use the new full-screen and homescreen shortcuts--they really help make jumping back into your sessions a lot smoother! Oh, and don't forget to save those session preferences safely in SecureStorage! (core.telegram.org).

• If you’re looking to snag that first fill during mints on Solana bursts, try using Jito bundles with some adjusted priority fees. It’s a smart move to help you get ahead! Oh, and make sure you set up some wire fallbacks to non-bundle paths for that extra layer of reliability. You really don’t want to overlook that! (docs.solanaappkit.com).

Compliance clocks are super important! Make sure to set up feature flags for users in the EU. This way, you can easily switch on those necessary MiCA disclosures, keep track of records, and manage issuer limits for each stablecoin without the hassle of redeploying everything every time. It's all about making life easier, right? (esma.europa.eu).

PROVE -- Why this blueprint converts and scales

• “Addressable users”: Telegram is super popular, boasting a huge community of users--millions of them are chatting with bots and using mini-apps every single month! Great news! Your ideal audience is already spending time there! Check it out: telegram.org.
• Stars → TON ad subsidy: So, here’s the deal--developers can swap their Stars for Toncoin or use them to dive back into Telegram Ads. And guess what? There’s a nice little 30% discount that makes it even more appealing! Basically, this means it's going to be cheaper for us to bring in new customers than what we usually spend on mobile in-app purchase fees. (theblock.co).
• Trading behavior: If you’re into trading, you should definitely take a look at some Telegram trading bots on Solana. Trojan, BONKbot, and Maestro are pretty popular options you might want to check out! They've shown that chat-based experiences can really manage some serious money--like, we're talking multibillion-dollar volumes here! Instead of starting from square one with new users, you can build your go-to-market strategy around what you've already learned about their behaviors. It’s all about using that knowledge to make the onboarding process smoother and more effective! (coingecko.com).
• Execution on TON: Thanks to first-party SDKs and DEX APIs such as STON.fi and Omniston, you can set up swaps, liquidity pools, and referral vaults pretty quickly. It's straightforward and efficient! What this really means is that you'll be able to notice some solid improvements in how quickly you can make your first trade. (docs.ston.fi).

Sample KPI Targets We’re Committing To in the Pilot:

• "Tap-to-trade" in less than 120 seconds: Basically, this is about how quickly a new user can go from signing up to connecting their wallet and then making a funded USDT‑TON swap. Pretty cool, right?
• Server response time: Let's shoot for keeping our p95 on callback flows below 300 ms. Plus, we're really hoping for zero dropped actions when we hit 1k RPS, all thanks to our per-chat shaping.
• First-session conversion boost: We're aiming for a 15-25% increase by rolling out a full-screen Mini App, adding a homescreen shortcut, and upselling with Stars.
• Lower Customer Acquisition Cost (CAC): We're aiming to cut down our customer acquisition costs by 20-30% on Telegram. We're planning to do this by using some cool ads funded by Stars, along with a bit of native distribution to help spread the word. If you want to dive deeper into this topic, feel free to check it out here. There’s a lot of interesting stuff to explore!

TARGET AUDIENCE -- and the keywords they actually search for

• Heads of Product and Engineering at CEX and Neobrokers are getting into Telegram: Hey there! Just wanted to share a few keywords you might want to include in your RFP: “Mini App full-screen,” “TON Connect,” “Telegram Stars subscriptions,” and “FIX 4.” Hope that helps! So, we've got a few things to cover here: "4 bridge," "L3 order book over WebSocket," "per-chat 429 handling," and "CASP passporting (MiCA)." ”.
• Founders of DeFi trading and market makers: Make sure to watch for these terms: “STON.fi Omniston,” “TON USDT settlement,” “Jito bundles & priority fees,” “Jupiter routing,” “MEV-aware SOR,” and “TON Tact contracts.” They’re all pretty important! ”.
• Compliance Leads (especially when it comes to the EU): Here are some key phrases you might want to keep in mind: “MiCA Titles III/IV stablecoins,” “CASP authorization & passporting,” “Travel Rule IVMS 101 mapping,” and “PII boundary for Telegram WebApps.” ”.

WHAT WE BUILD FOR YOU -- Scope you can sign today

• MVP (6-8 weeks): We're excited to kick things off with a sleek full-screen Telegram Mini App! It’s packed with secure authentication and TON Connect, plus some really cool premium features that are gated by Stars. You'll also find STON.fi swaps, a crash-proof rate limiter, and handy MiCA-aware toggles. Can't wait for you to check it out!
• Scale-up (8-12 weeks): Once we've got that sorted, we’ll roll out a Smart Order Routing (SOR) system across TON. On top of that, we're also looking to add an optional integration with Solana through Jupiter or Jito. We’ve got some exciting features coming your way! We’ll be rolling out referrals, fee vaults, advanced order types, alerts, and a powerful analytics/RCA stack that’s going to make life easier for Procurement and Risk. Can’t wait for you to check them out!

We’ve got a bunch of services ready for you! Take a look at our awesome custom blockchain development services. You won’t be disappointed!

• Looking for a security check? Our security audit services have got you covered!
• Want to link up various platforms? Check out our blockchain integration services!
• Are you curious about cross-chain solutions? We've got you covered! Check out our cross-chain solutions development services. Got a cool app idea brewing? Check out our dApp development solutions - they could be exactly what you're looking for! Hey there! Interested in smart contracts? Check out our smart contract development page for more info!
• Thinking about diving into the world of TON? We've got you covered with our specialized TON blockchain development services! If you’re into web3, you should definitely take a look at our web3 development services. We’ve got some great stuff lined up for you!

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Brief in‑depth notes and edge cases

Hey! Just a quick reminder: if you're using Telegram, you’ll need to use Stars for any digital goodies. This is all in line with Apple and Google’s policies. If you're using something outside the app, it's best to stick with on-chain USDT/TON.
Hey, just a heads-up--make sure to keep those billing SKUs separate! It'll help you breeze through the reviews without any hiccups. For more info, just click here! You’ll find all the details you need.

• Storage and privacy: It's a smart move to stash your session tokens in SecureStorage. Just a heads up, you should definitely avoid putting any KYC PII in DeviceStorage. When dealing with personally identifiable information (PII), just remember to keep it off the chat and only use signed references. It’s all about keeping things safe and secure! Find out more here.
• TON Smart Contracts: If you're looking for a solid option for your auditable contracts, we suggest checking out Tact. It's already been reviewed by Trail of Bits, so you know it's got that extra level of trustworthiness. Also, don’t forget to check out Blueprint CLI! It can really help you streamline your testing and deployment process. Trust me, it makes things way easier! If you’re looking for more details, just click here. You'll find everything you need!
• Liquidity Fragmentation on TON: To get the best outcomes, it's usually a good idea to stick with Omniston paths as your go-to option. Just a quick reminder to make sure you set up those referral vaults using the API endpoints from STON.fi. They'll help you keep track of any accruals and withdrawals! Feel free to check this out for more info: here. It’s a great resource!
• Solana Priority Fees Fluctuation: The way fees work can shift based on the choices made by Jito TipRouter/DAO. So, it’s a good idea to keep those fee tiers adjustable and easy to track. If you want to dive deeper into this topic, take a look at this thread here. It’s got some great info!

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A final word on ROI

The whole “super-app” thing is super important! When you bring together Telegram for getting the word out, Stars for making money, and TON for handling payments, it really simplifies how you gather new users, get them set up, and help them with funding--all in one spot. It’s pretty awesome! So, if you take a look at Solana and TON, you'll notice that a lot of the fastest-growing trading activities are buzzing in Telegram these days. It's not just a trend; it’s because people are seeing results quicker there. Who doesn’t want to make money faster, right? (telegram.org).

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Hey there! Are you all set to get things moving? If you're in charge of Product or Engineering and you're looking to launch a Telegram trading Mini App in the EU before July 1, 2026, just drop us a quick reply with “TON-FIRST.” Looking forward to hearing from you! Let's schedule a quick 45-minute architecture review for you. In this session, we’re going to help you put together everything you need for your KYC vendor, order router, and compliance controls. We’ll set it all up in a nice, full-screen Mini App that comes with Stars billing and those TON-USDT rails you’re looking for. Let’s dive in! Once that's sorted out, we'll send you a fixed-time, fixed-price statement of work. Your Procurement team can give it the green light this month.