EcoNova Wallet × four.meme

Describe a meme. Get a token. In one conversation.

EcoNova is an AI-powered multichain mobile wallet with a built-in meme token launchpad. It integrates directly with four.meme on BNB Chain — letting anyone go from idea to live token in under 60 seconds, just by talking.

No code. No forms. No browser tabs. Just chat.

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Hackathon Submission — BNB Chain × four.meme

The Core Flow

User: "launch a sleepy frog meme coin"

EcoNova AI:
  → Invents name, ticker, lore description
  → Generates logo via AI image model
  → Converts & uploads image to four.meme CDN
  → Calls four.meme token/create API → gets createArg + signature
  → Submits createToken(createArg, signature) on-chain via TokenManager2
  → Returns token address, tx hash, DexScreener link
  → Auto-generates a launch tweet

One message. One token. On BNB Chain.

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What Was Built

🤖 AI Meme Token Deployment

The AI agent handles the entire four.meme launch pipeline autonomously:

• Concept generation — invents name, ticker (≤6 chars), lore, and label from any vague prompt
• AI image generation — generates a meme logo via OpenRouter image models
• Format normalisation — detects and converts WebP/JPEG/GIF → PNG before upload (four.meme only accepts PNG)
• CDN upload — authenticates with four.meme, uploads to static.four.meme with correct MIME type
• API integration — calls POST /meme-api/v1/private/token/create with full payload including shortName, symbol (trading pair), raisedToken config, and raisedAmount
• On-chain submission — manually ABI-encodes createToken(bytes,bytes) calldata, signs, and broadcasts to TokenManager2 (0x5c952063c7fc8610FFDB798152D69F0B9550762b) on BSC mainnet
• Token address extraction — polls receipt, finds TokenCreate event, reads token address from topics[2]
• Launch tweet — auto-generates a formatted tweet with CA, symbol, and lore hook

🖼️ AI Image Pipeline

• Calls OpenRouter image generation API (sourceful/riverflow-v2-fast)
• Decodes base64 response, detects magic bytes to identify format
• Converts any format → PNG using the image package
• Uploads with correct MediaType header — resolves four.meme's internal format validator error
• Caches generated bytes across retries so regeneration is skipped on upload failure
• Timestamp-suffixed filenames prevent CDN deduplication collisions

🧠 Conversational Agent

Built on LangChain (Dart) with GPT-4o-mini via OpenRouter. The agent:

• Follows a strict sequential tool-calling protocol (no parallel calls)
• Resolves contacts, domain names, and token addresses from natural language
• Confirms every destructive action with the user before executing
• Reports exact error strings from tools — no softening or summarising

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Demo

Prompt: "launch a meme coin about a frog that sleeps through every pump"

EcoNova responds:

I've come up with SleepyFrog (SLEEP) — "The frog who naps through every pump and wakes up rich." Generating logo...

(AI generates image → uploads to four.meme CDN → deploys token)

🚀 Token deployed: SleepyFrog (SLEEP) 📍 Address: 0x0b4f5e...4444 🔗 Deploy tx: BscScan 📈 DexScreener: View chart

Tweet: 🚀 SleepyFrog ($SLEEP) is LIVE on BNB Chain! The frog who naps through every pump and wakes up rich. CA: 0x0b4f5e...4444 #BNBChain #FourMeme #SLEEP

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Technical Integration with four.meme

Step	Endpoint / Contract	Notes
Auth nonce	POST /v1/private/user/nonce/generate	EIP-191 personal sign
Login	POST /v1/private/user/login/dex	Returns meme-web-access token
Image upload	POST /v1/private/token/upload	Multipart, image/png required
Token create	POST /v1/private/token/create	symbol = trading pair (BNB), shortName = ticker
On-chain	TokenManager2.createToken(bytes,bytes)	0x5c952063c7fc8610FFDB798152D69F0B9550762b
Receipt poll	getTransactionReceipt	Token address from TokenCreate event topics[2]

Key API fields discovered through integration:

• symbol — trading pair currency (BNB), not the token ticker
• shortName — the actual token ticker (e.g. SLEEP)
• raisedAmount — must match preSale, even when both are "0.0000"
• raisedToken — full BNB config object fetched from /v1/public/config

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Architecture

User message
    │
    ▼
GPT-4o-mini (LangChain agent)
    │
    ├── CMD_generateMemeImage
    │       │
    │       ├── OpenRouter image API → raw bytes
    │       ├── Magic byte detection (WebP/JPEG/PNG/GIF)
    │       ├── image package → PNG conversion
    │       └── four.meme CDN upload → imageUrl
    │
    └── CMD_deployMeme
            │
            ├── four.meme auth (nonce + EIP-191 sign)
            ├── POST /token/create → createArg + signature
            └── TokenManager2.createToken on BSC mainnet

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Other Features

EcoNova is a full multichain wallet. The four.meme integration is built on top of a production-grade foundation:

• 30+ supported chains — EVM, Solana, Cosmos, Starknet, Polkadot, TON, TRON, Bitcoin, Stacks, and more
• Natural language transfers — "Send 10 BNB to Alice", "Send $20 worth of USDC to Mum"
• Token swaps — quote and execute swaps via natural language
• Contact book — send to names instead of addresses, with fuzzy matching
• Domain resolution — .bnb, .eth, .stark, .sol and more
• Staking — stake and unstake via chat
• dApp browser — injected wallet provider for EVM, Solana, Starknet, NEAR, MultiversX
• WalletConnect — V1, V2, and Reown support
• x402 autonomous payments — pay paywalled APIs automatically when a 402 is returned
• USDCx savings goals — named savings vaults on Stacks with progress tracking
• SLIP-39 seed splitting — K-of-N threshold shares for secure backup
• Dead man's switch — time-locked inheritance with encrypted share distribution
• Voice recognition — hands-free wallet control
• Portfolio overview — unified balance view across all chains

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Running Locally

Requirements: Flutter 3.24.1 · Dart 3.5.1

git clone https://github.com/Imdavyking/econova_wallet
cd econova_wallet
flutter pub get
cp .env.example .env
# Add your OpenRouter API key to .env
flutter run

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Stack

Layer	Technology
Mobile framework	Flutter (Dart)
AI agent	LangChain Dart + GPT-4o-mini via OpenRouter
Image generation	OpenRouter (sourceful/riverflow-v2-fast)
Image processing	image package (WebP → PNG conversion)
Blockchain	web3dart (BSC mainnet, chainId 56)
Meme launchpad	four.meme REST API + TokenManager2
Key management	BIP39 / SLIP39, pure Dart cryptography

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License

MIT