Flap BSC Launch
Launch a BNB Smart Chain token through Flap with a BNB or catalogue quote asset, Bundle or Graduation Bundle mode, Tax V3 controls, dividend distribution, BSC bundle buys, and starter strategies.
Sumo supports Flap BSC launches on BNB Smart Chain. Flap is a bonding-curve launchpad rather than a Uniswap-style pool launch: Sumo builds the Flap Portal create call, predicts the token address, plans bundle buys against the Flap curve, and submits the launch atomically through BSC bundle builders. Flap launch tokens deploy from the Tax V3 implementation, which adds tax duration, anti-farmer, and dividend behavior on top of the buy/sell fee split.
Prerequisites
Before launching, make sure you have:
- Token metadata ready: name, ticker, image, description, and social links
- BNB for token creation, dev buy, bundle buys, gas reserves, and bundle priority fee
- A launch plan: supply control target, dev buy, bundle wallet count, holder cleanup preference, and tax settings
- A wallet plan: use ready wallets from private keys, Wallet Farm, or another profile, or create new BSC wallets / buy aged BSC wallets through Wallet Marketplace during the wizard
Fixed Flap Parameters
Flap fixes total supply at 1 billion tokens with 18 decimals. Total supply and decimals are set automatically when you choose the launchpad and are not edited in the standard Sumo flow. The quote asset the curve is priced in is yours to choose: native BNB or a supported token from the quote picker.
Launch Flow
1. Info
Choose Flap BSC in the Launchpad field, then enter the token and profile details.
| Field | Required | Description |
|---|---|---|
| Launchpad | Yes | Select Flap BSC. The launchpad is locked after the draft is saved. |
| Profile Name | Yes | Internal Sumo profile name used after launch |
| Token Name | Yes | Public token name |
| Ticker | Yes | Public token symbol, auto-uppercased |
| Image | Yes | JPG or PNG image, uploaded with the Flap metadata |
| Description | No | Public token description |
| X, Telegram, Website | No | Public social links included with the Flap metadata |
2. Buy Mode
Flap plans every buy against the Flap bonding curve in the selected quote asset. Launch wallets are always funded in BNB: when the quote is an ERC-20, the Flap Portal converts each buy into the quote on the way in (its native-to-quote hop), so there is no separate funding swap.
Launch mode
| Mode | Description |
|---|---|
| Bundle | Dev and bundle wallets buy the curve only, capped one point under Flap's 80% graduation threshold (79%). |
| Graduation Bundle | Dev and bundle wallets buy out the curve exactly (80%). The last bundle buy crosses the threshold, Flap migrates the token to PancakeSwap V2 inside that transaction, and Post-Graduation Wallets keep buying from the new pair, all inside one atomic BSC bundle. The target runs up to 99%. |
The mode and the quote asset are fixed once the draft is saved; start a new draft to change them.
Quote asset
| Option | Description |
|---|---|
| BNB | The native curve. Every buy pays BNB straight into the curve. |
| Stablecoins and crypto | USDT, USD1, U, BTCB, SOL, ETH, DOGE, and 币安人生. Wallets stay funded in BNB. |
| Tokenized assets | XAUT, 27 bStocks, and six Ondo tokens: BILIon, DISon, FXIon, GMEon, PDDon, and SQQQon. Each quote has its own curve profile, which Sumo reads live from the Portal. |
The picker offers 42 ERC-20 quotes whose BNB conversion routes are supported by Flap. Other tokens in Flap's Custom section, such as SHIB, require a separate launch flow and are not offered here.
Sumo shows the live BNB-to-quote rate of the Portal hop next to the estimates. While the rate is still loading the Launch plan's Bundle cost reads "Quoting…"; if the Portal cannot price a quote, the launch cannot be sized.
Large hop swaps can require more BNB than the Bundle cost because of price impact. The launch balance check uses the simulated plan and blocks submission if a wallet needs a top-up.
| Setting | Description |
|---|---|
| Launch plan | Sets the dev buy, the bundle and the snipe on one bar, under the path cards; see Launch Plan. Bundle: dev buy plus bundle up to 79% (Max 79%); the snipe can reach the 80% graduation ("Max 79% · snipe to 80%"). Graduation Bundle: the curve (80%) plus the Post-Graduation Buy, up to 99%. |
| Dev buy | Launch plan row: first buy on the curve. On BNB it rides on the create transaction; on a catalogue quote it is its own transaction right after the create. It is at least 0.0001% while there is a bundle. In a Graduation Bundle it never buys from the pair and leaves every bundle wallet at least 0.01% of the curve. |
| Bundle · at launch | Launch plan row: the share spread across the bundle wallets, without the dev buy. In a Graduation Bundle the bundle wallets buy the rest of the curve up to the 80% threshold. |
| Bundle cost | Cost strip: dev buy, bundle buys, post-graduation buys, and gas reserves sized from the bundle priority fee. Quote-denominated buys are converted at the live hop rate; on a catalogue quote the tooltip shows the quote the ordered buys need on the curve and, in a Graduation Bundle, on the pair. Flap's create value is not included. CEX funding buffers, when enabled, are added in Funds needed. |
| Market cap | Cost strip (MCap after with a snipe). Bundle: the curve's marginal price after the planned buys. Graduation Bundle: the migrated pair's spot price after the post-graduation buys. Uses the BNB/USD reference price and the hop rate. |
| Post-Graduation Buy | Graduation Bundle only. Read-only: the planned supply above 80%, bought from the PancakeSwap pair. |
| Post-Graduation Wallets | Graduation Bundle only. Wallets buying from the pair after the crossing buy, at least one. |
| Bundle Wallets | Number of BSC wallets used for curve buys. Bundle and Post-Graduation Wallets share one atomic bundle whose size follows the quote asset: 48 wallets on BNB, 40 on stablecoins and crypto quotes, 30 on tokenized stocks and XAUT, so the bundle fits one BSC block. In a Graduation Bundle the last bundle wallet makes the crossing buy and must hold at least 0.41% of supply (1.21% on a stock quote). When the Launch plan's bundle is 0% there is no bundle buy (the row reads Dev buy only): the launch is dev-only (create-only when the dev buy is 0% too), so Bundle Wallets and Holder Wallets are hidden, no bundle or holder wallets are created, and no token cleanup runs unless snipe wallets join holder cleanup (see Snipe After Launch in Launch a New Token). With Token Supply launch-fee payment the fee then comes from the dev wallet, so the dev buy must be at least the fee share of supply; otherwise use a Launch Ticket. Bundle mode only; a Graduation Bundle always needs bundle wallets. |
| Holder Wallets | Post-launch token destinations for holder cleanup. Up to 400. With Token Cleanup Method Off the wallets are still created, but nothing funds or fills them, and the per-bundle-wallet limits do not apply. |
| Funds Per Bundle Wallet | BNB gas reserve per bundle wallet. |
| Injection Wallets | Optional extra wallets, up to 100, funded with BNB for activity after launch. They do not buy in the launch or take part in cleanup. |
| Funds Per Injection Wallet | Shown when Injection Wallets is above 0. BNB sent to each injection wallet during funding. Defaults to 0. |
| Token Cleanup Method | Off, Token Transfer, or Sell / Buy. After the Flap bundle lands, moves the launch wallets' token balances into fresh holder wallets. Sell / Buy appears only for a Graduation Bundle: it sells from the launch wallets and buys for the holder wallets on the migrated PancakeSwap V2 pair through the shared cleanup contract. Each holder wallet needs BNB for its buy, and the launch is refused until every holder holds it. |
| Native Funds Per Holder Wallet | Shown with Sell / Buy. BNB sent to each holder wallet during funding for its cleanup buy, seeded at 0.01 BNB. |
| CEX Funding | Optional Husher funding path for distributing BNB. |
| CEX Funding Buffer Per Wallet | Extra BNB added per wallet when CEX funding is enabled. |
| Advanced Controls | Optional Tax Address, bundle supply jitter, BSC bundle priority fee, cleanup delay, and holder supply jitter. |
| Trading slippage | Default 1%, at most 10%. Becomes the new profile's default slippage for strategies and instant trades, changeable later in profile settings. On a taxed token the tax is added on top and saved (for example 1% + 5% tax = 6%). |
| Cleanup slippage | Sell / Buy holder cleanup only. Default 2%, at most 10%, not counting tax: the token's buy or sell tax is added automatically for each leg. Each cleanup sell and buy gets up to three attempts, each with 1% more tolerance, up to 10%. |
| Tax Address | Optional, in Advanced Controls. An external BSC address (a wallet or a contract such as a multisig) that receives the Tax Wallet share of collected tax instead of a SUMO tax wallet; no tax wallet is created when it is set. It is fixed on chain for the whole tax duration, so double-check it. Leave empty to use a tax wallet. |
Tax Controls
Flap Tax V3 settings are configured per launch. Buy and sell taxes are selected from fixed presets, and either may be 0% as long as the other is positive.
| Setting | Description |
|---|---|
| Buy Tax | Tax applied to Flap bonding-curve buys. Options: Off (0%), 1%, 3%, 5%, 10%. |
| Sell Tax | Tax applied to Flap bonding-curve sells. Options: Off (0%), 1%, 3%, 5%, 10%. |
| Burn | Percentage of collected tax allocated to burns. |
| Dividend | Percentage of collected tax allocated to holder dividends. |
| Tax Wallet | Percentage of collected tax sent to the configured tax wallet, or to the Tax Address when one is set. |
| Liquidity | Read-only remainder after burn, dividend, and tax wallet rates. |
| Tax Duration | Duration of the configured taxes, in days. Defaults to and cannot be lower than 365; maximum 36,500. |
| Anti-Farmer Duration | After graduation, taxes apply across every registered pool for this many days. Defaults to and cannot be lower than 1; maximum 365. |
The four distribution rates must add up to 100%; liquidity is derived from the other three.
Tax Duration Minimum
The deployed Flap Portal requires at least one year of tax duration, at least one day of anti-farmer protection, and a tax duration that runs at least 24 hours beyond the anti-farmer window. The wizard raises the tax duration minimum as you increase the anti-farmer duration, so set anti-farmer first.
Dividend Settings
These appear only when the Dividend allocation is above 0%.
| Setting | Description |
|---|---|
| Dividend Token | On a BNB quote: choose native BNB, the launched token, or a featured Flap-supported BSC route from the searchable token catalogue. Token logos, symbols, names, and categories are shown in the selector. A custom ERC-20 address can still be entered and is validated against Flap's SwapRegistry during launch simulation. On a catalogue quote: Flap pays dividends only in the quote itself (the default) or in the launched token. |
| Minimum Share Balance | Minimum launched-token balance eligible for dividends, entered in 18-decimal atomic units. Minimum 10,000 tokens. |
The selector only showcases tokens whose WBNB dividend conversion routes currently pass Flap's launch simulation. Custom ERC-20 addresses remain available for newly registered routes and are checked by the same simulation before launch. Pre-existing drafts keep recognizable token metadata while requiring that route check.
3. Wallets
Add, import, or generate wallets for each required BSC role.
| Role | Description |
|---|---|
| Dev Wallet | Creates the token through the Flap Portal, pays create value, and performs the dev buy. |
| Bundle Wallets | Execute Flap curve buys in the BSC launch bundle. |
| Injection Wallets | Optional wallets funded with BNB for activity after launch. They take no part in the launch or cleanup. |
| Post-Graduation Wallets | Graduation Bundle only. Buy from the PancakeSwap pair inside the same bundle, after the crossing buy migrates the token. Created active, and included in token cleanup as sources. |
| Tax Wallet | Required only when a buy or sell tax is enabled and no Tax Address is set in Advanced Controls. Receives the tax wallet share of collected tax. |
| Holder Wallets | Receive tokens through post-launch cleanup when token cleanup is enabled. With Token Cleanup Method Off they are still created and stay empty. |
You can use ready wallets, create new wallets, or buy aged wallets at this step. Ready-wallet paths include importing private keys, pulling wallets from Wallet Farm, or reusing wallets from another profile. Additional paths include creating new wallets or buying aged inventory from Wallet Marketplace.
Freeze and sniper wallets are not used by Flap BSC launches.
4. Funding
Save the draft before funding. The funding table tracks BNB requirements for token creation, dev buy, bundle buys, post-graduation buys, gas reserves, and the BSC bundle priority fee. Every row is BNB, whatever the quote asset: the Portal hop converts each buy at launch time. Each buy is funded with the headroom the launch signs: 2% on the crossing buy, refunded by the Portal past the threshold, and 1% on every buy priced through the hop.
If CEX funding is enabled, deposit the estimated BNB into the funding wallet and use Fund to distribute it through Husher. If CEX funding is disabled, fund the dev, tax, and bundle wallets directly and use Check Balances.
5. Strategies
Optionally add starter strategies to the profile before launch. You can configure Counter Trade, DCA, and Limit Order strategies by hand, or apply a strategy preset: Sumo ships built-in Hyped, Standard, and Staircase presets, and your org can save its own presets for reuse across launches and imports. Strategies are saved with the draft and can be reviewed after the token is live.
6. Launch Preview
The preview shows:
- Bundle supply control, dev buy, and bundle buy split
- Launch cost and estimated market cap
- Buy / sell tax, tax duration, and anti-farmer duration
- Burn, dividend, tax wallet, and liquidity distribution rates
- Dividend token and minimum share balance when the dividend allocation is above 0%
When launched, Sumo builds the Flap create call, plans every buy against a full-bundle simulation of the Portal (which is how the BNB each hop-priced buy needs and the migrated pair's reserves are sized), appends the buys in order, simulates the BSC bundle, submits it to supported BSC builders, and confirms the landed transactions on-chain. A Graduation Bundle activates the profile directly on the PancakeSwap pair. Token cleanup runs afterwards when enabled.
Snipe After Launch
Optional Snipe after launch wallets buy right after the launch lands, with their own sizing, delay, max premium, pacing and gas priority. Set Snipe Wallets to 0 (the default) and the launch is unchanged. See Snipe After Launch. On a catalogue quote token, snipe wallets hold BNB only and Flap converts it inside each buy, so there is no quote amount to fund. Snipe after launch is not available on a Graduation Bundle with a token quote (after migration the pool needs the quote token).
After Launch
When the bundle lands, the profile becomes active and opens in Live Trading. Flap profiles use the Flap connector for quotes, trades, graduation progress, and post-launch spot-price data.
Launch Logs
Flap profiles add a Launch Logs tab for metadata preparation, create transaction building, bundle simulation, bundle submission, confirmation, and holder cleanup.
Further Reading
- What Are Memecoin Bonding Curves? — this launchpad's curve overlaid on every other supported launchpad, with graduation math
- How Much Does It Cost to Launch a Memecoin? — simulate launch cost, starting market cap, and supply held for this launchpad