FAQ
General Questions
What is Mika402?
Mika402 is an autonomous AI agent that handles payments on your behalf using the x402 protocol. It enables you to access paid APIs, services, and digital resources without manual intervention—just tell Mika what you need, and it processes payments automatically via blockchain transactions.
Is Mika402 free to use?
Yes! Mika402 itself charges 0% platform fees. You only pay:
Service provider fees (set by each x402 service)
Blockchain gas fees (typically $0.01-$1.00)
No subscription, no hidden costs
Visit mika402.xyz to start using it immediately.
What makes Mika402 different?
Autonomous Payments: AI processes HTTP 402 payment flows automatically
Zero Platform Fees: No middlemen—only service costs and gas
Instant Settlement: Payments confirm in ~2 seconds
Blockchain Agnostic: Works with Ethereum, Solana, and any x402-compatible chain
No Registration: Use immediately without accounts or OAuth
Spending Limits: User-defined safety controls prevent overspending
Open Protocol: Built on the x402 standard for internet-native payments
Do I need cryptocurrency?
Yes. Since Mika402 processes payments via blockchain:
You'll need a Web3 wallet (MetaMask, Coinbase Wallet, etc.)
Sufficient cryptocurrency for service payments + gas fees
Supported chains: Ethereum, Solana, or other x402-compatible networks
What is x402?
x402 is an open protocol for internet-native payments built around the HTTP 402 Payment Required status code. It enables:
Programmatic payments without accounts or sessions
Direct blockchain transactions for instant service access
Zero-fee transactions with no intermediaries
Machine-to-machine commerce at internet scale
Learn more at x402.org and x402.gitbook.io
Platform Questions
How do I access Mika402?
Visit mika402.xyz in your web browser
Click "Launch App" to open the chat interface
Connect your Web3 wallet when prompted
Start making requests—Mika402 handles payments automatically!
No installation, downloads, or registration required.
What browsers are supported?
Mika402 works on all modern browsers with Web3 wallet support:
Google Chrome (recommended) - Version 90+
Mozilla Firefox - Version 88+
Safari - Version 14+ (with wallet extension)
Brave Browser - Built-in wallet support
Microsoft Edge - Version 90+
Does it work on mobile?
Yes! Mika402 works on mobile devices with Web3 wallet apps:
iOS: Use MetaMask mobile browser or WalletConnect
Android: Use MetaMask, Trust Wallet, or Coinbase Wallet
Tablets: Full responsive design support
Note: Mobile wallet integration varies by wallet provider.
Do I need to create an account?
No! Mika402 is designed for anonymous, immediate access:
No registration or email required
Your wallet address is your identity
No personal information collected
Privacy-first architecture
Using Mika402
How do autonomous payments work?
When you request a paid service:
Detection: Mika402 receives HTTP 402 from the service
Verification: Checks your spending limits and balance
Processing: Submits blockchain transaction automatically
Confirmation: Waits ~2 seconds for blockchain confirmation
Access: Retries request with payment proof, delivers data
All within seconds, without manual approval!
What are spending limits?
Spending limits are your safety controls:
Daily Limit: Maximum you can spend in 24 hours
Weekly Limit: Maximum per 7 days
Monthly Limit: Maximum per 30 days
Set conservative limits initially (e.g., 0.01 ETH/day) and adjust as you get comfortable.
How do I set spending limits?
Spending limits are managed through smart contracts:
Deploy or configure the SpendingLimits contract
Set your daily, weekly, and monthly caps
Update anytime via wallet transactions
Limits are enforced automatically on every payment
See Configuration Guide for detailed setup.
Can I cancel a payment?
Once a blockchain transaction is submitted, it cannot be cancelled. However:
Mika402 checks limits before submitting
Shows cost estimates before processing
You maintain full control via spending limits
Failed transactions refund automatically
What services can I access?
Any x402-compatible service, including:
Data APIs
Weather data (WeatherAPI, OpenWeather)
Financial markets (CoinGecko, Stock APIs)
News and content feeds
AI Services
Image generation (Heurist Mesh)
Text processing and analysis
Model inference APIs
Storage Services
IPFS pinning (Pinata)
Decentralized storage
File hosting
Web3 Services
Smart contract deployment (thirdweb)
Blockchain data APIs
DeFi protocol access
The ecosystem is growing—ask Mika402 "What services are available?"
Does it save my chat history?
No. Mika402 is completely stateless for privacy:
Conversations are not stored on servers
Refresh the page to start fresh
No conversation data logged or tracked
Transaction history is on-chain (public blockchain record)
This protects your privacy but means you can't retrieve old conversations.
How much do services cost?
Costs vary by service:
Service Fee: Set by each provider (e.g., 0.001-0.01 ETH per request)
Gas Fee: Blockchain transaction cost ($0.01-$1.00, varies by network)
Total: Service + Gas
Ask Mika402 for pricing: "How much does WeatherAPI cost?"
Technical Questions
What AI model powers Mika402?
Mika402 uses Google Gemini 2.5 with:
Natural language understanding for payment requests
Intent recognition for service discovery
Context awareness across conversation
Real-time x402 service registry queries
What blockchains are supported?
Mika402 is blockchain agnostic and supports:
Ethereum: Main network and L2s (Polygon, Arbitrum, Optimism)
Solana: High-speed, low-cost transactions
Base: Coinbase's L2 network
Any x402-compatible chain: Protocol is chain-agnostic
Services specify which chains they accept, and Mika402 routes accordingly.
Where do payments go?
Payments go directly to service providers:
No intermediaries or escrow
Peer-to-peer blockchain transactions
Smart contracts handle payment validation
All transactions are publicly verifiable on-chain
How fast are payments?
Payment speed depends on the blockchain:
Ethereum: ~12 seconds (1 block)
Solana: ~2 seconds
Polygon: ~2-3 seconds
Base: ~2 seconds
Total request-to-data time: 3-5 seconds typically.
Is my data private?
Privacy model:
✅ Conversations: Not stored, not logged
✅ Requests: Not tracked on our servers
✅ Wallet: Non-custodial, you control keys
⚠️ Transactions: Public on blockchain (nature of blockchain)
⚠️ Service Data: Privacy depends on service provider
We don't track you, but blockchain transactions are inherently public.
Are transactions reversible?
No. Blockchain transactions are permanent and irreversible:
Once confirmed, payment cannot be undone
This is fundamental to blockchain technology
Disputes must be handled with service provider
Set conservative spending limits as protection
Security Questions
Is Mika402 secure?
Yes, with multiple security layers:
Non-Custodial: You control your private keys
Spending Limits: Smart contract enforcement
HTTPS Encryption: All web traffic encrypted
Open Source Contracts: Auditable by anyone
No Central Control: Decentralized architecture
Rate Limiting: Protection against abuse
Can Mika402 steal my funds?
No. The architecture is non-custodial:
Mika402 never holds your funds
Your wallet signs all transactions
You can revoke access anytime
Spending limits enforce maximum amounts
All transactions visible on-chain
How do I protect myself?
Best practices:
Set Conservative Limits: Start with low daily limits (0.01 ETH)
Use Dedicated Wallet: Separate wallet for autonomous payments
Verify Services: Only use verified x402 services
Monitor Spending: Check transaction history regularly
Keep Private Keys Safe: Never share your seed phrase
Review Transactions: Check block explorer confirmations
What if a service doesn't deliver?
If you paid but didn't receive service:
Save the transaction hash as proof
Contact the service provider with proof of payment
Request refund through their support channel
Report to Mika402 support if issue persists
Consider disputing via smart contract (if supported)
We're building dispute resolution mechanisms into future versions.
How do I report security issues?
Please report vulnerabilities responsibly:
Email: [email protected]
Don't disclose publicly until patched
We'll acknowledge within 48 hours
Fixes deployed as soon as possible
Responsible disclosure appreciated
Payment Questions
What happens if payment fails?
If a payment fails:
Your funds are not deducted (transaction reverts)
Mika402 shows the failure reason
Common causes: insufficient balance, gas too low, network issues
You can retry with adjusted parameters
Why did my transaction fail?
Common failure reasons:
Insufficient Balance: Not enough crypto for payment + gas
Gas Too Low: Network congestion requires higher gas
Limit Exceeded: Transaction would exceed spending limits
Service Unavailable: x402 service is offline
Network Congestion: Blockchain overloaded
How do I check transaction status?
Every payment includes a transaction hash. Use it to:
View on block explorer (Etherscan, Solscan, etc.)
Check confirmation status
See exact costs and gas used
Verify payment recipient
Mika402 also provides clickable links to block explorers.
Can I get refunds?
Refunds depend on the service provider:
Blockchain transactions are irreversible
Service must issue refund as new transaction
Contact service provider with proof of payment
Some services offer automatic refund for failures
Why are gas fees so high?
Gas fees vary based on:
Network Congestion: More demand = higher fees
Chain Selection: Ethereum > Polygon > Solana
Transaction Complexity: Simple transfers are cheaper
Market Conditions: Bull markets increase activity
Use cheaper chains (Solana, Polygon) for lower costs.
Troubleshooting
My wallet won't connect
Try these solutions:
Ensure wallet extension is installed
Unlock your wallet
Refresh the page
Try a different browser
Check wallet is on supported network
Update wallet extension to latest version
Payment is stuck pending
If payment is taking too long:
Check blockchain explorer for transaction status
Verify it's not failed or reverted
Wait 5-10 minutes for network congestion
Contact support if stuck >10 minutes
Transaction hash is your proof of payment
Insufficient balance error
This means:
Your wallet doesn't have enough cryptocurrency
Need funds for: service fee + gas + small buffer
Add cryptocurrency to your wallet
Try again once funded
Service unavailable
If a service is unavailable:
Service may be temporarily offline
Try again in a few minutes
Ask Mika402 for alternative services
Check service status on x402 registry
Report persistent issues to support
Wrong amount charged
If charged amount differs from expected:
Check transaction on block explorer
Account for gas fees (shown separately)
Service may have dynamic pricing
Verify service pricing with provider
Contact provider if genuinely incorrect
Future Development
What features are coming?
Planned improvements:
Multi-Signature Support: Require multiple approvals for organizations
Scheduled Payments: Recurring service payments
Batch Processing: Multiple services in one transaction
Advanced Routing: Auto-select cheapest chain
Dispute Resolution: On-chain arbitration system
Mobile Apps: Native iOS and Android apps
Service Discovery: Enhanced x402 service marketplace
Can I integrate Mika402 into my app?
Developer API coming soon:
RESTful API for autonomous payments
SDK for JavaScript, Python, Go
WebSocket support for real-time updates
White-label solutions for enterprises
Email [email protected] for early access.
How can I add my service to x402?
To make your API x402-compatible:
Implement HTTP 402 payment flow
Accept blockchain payments
Verify payment proofs
Register in x402 service registry
Set your pricing and accepted chains
See x402 Documentation for implementation guide.
Getting Help
Where can I get support?
📧 Email: [email protected]
💬 Discord: Join our community
🐦 X: @mika402xyz
📖 Documentation: Full docs at this site
🐛 GitHub: Report issues
I have a feature request
We'd love to hear it!
Email: [email protected]
Discord: #feature-requests channel
X: @mika402xyz
GitHub: Open a feature request issue
How do I report a bug?
Please include:
Description of the issue
What you were trying to do
Browser and wallet information
Transaction hash (if payment-related)
Screenshots if applicable
Send to: [email protected]
Where is the source code?
Mika402 is open source:
GitHub: github.com/mika402-xyz/mika402
Smart Contracts: Fully auditable Solidity code
Frontend: Next.js application
License: MIT License
Contributions welcome!
Cost & Economics
How much will I spend?
It depends on usage:
Light Use (few requests/week)
~$5-10/month in service fees
~$2-5/month in gas fees
Regular Use (daily requests)
~$20-50/month in service fees
~$5-15/month in gas fees
Heavy Use (multiple requests/day)
$100+/month depending on services
Set spending limits to control costs
Why not use traditional payments?
x402 benefits over credit cards:
✅ No accounts or registration
✅ No personal data shared
✅ Instant settlement (~2 seconds vs 2-3 days)
✅ No chargebacks or fraud risk
✅ Works globally without borders
✅ Machine-readable payment flows
✅ Zero platform fees
Are there transaction fees?
Only blockchain fees:
Service Fee: Set by service provider
Gas Fee: Blockchain transaction cost
Platform Fee: 0% (Mika402 charges nothing)
No hidden fees, subscriptions, or markups.
Still have questions? Join our Discord community or email [email protected]
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