Blockchain Developer Kit
Blockchain
9 tools
5 free
4 paid
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via402 Beta • Paid MCP tools, anywhere
Use paid AI tools — without worrying about payments or clients.
Hey, we're currently in beta!
Join the waitlist to get early access — self-registration isn't available yet.
Some AI tools cost money.
Some AI clients support payments.
Most don't.
via402 removes that friction.
You connect via402 once and get access to a curated set of MCP tools — some free, some paid — all behind a single endpoint.
Pick the tools you want, define how much you're willing to spend, and ignore the rest.
After that, you can use paid and free MCP tools from any AI client as if they were native. via402 takes care of the payment flow behind the scenes.
Coming soon: Bring your own MCP servers and custom tool URLs.
Avalanche
402
x402 Protocol
Ethereum
Base
Polygon
Claude
OpenRouter
Arbitrum
Deep Blockchain Research with AI
Combine multiple data sources into comprehensive reports. One toolkit, endless insights.
via402.ai/playground
Create a report for wallet
0x7E11...1C1A457
on Fuji Testnet
I'll create a detailed report for this wallet address.
5 steps
get_balances_evm_avax
get_collectibles_evm_avax
get_transactions_evm_avax
Synthesized blockchain analysis
Created markdown report
Here's your comprehensive wallet report:
wallet_report_0x7e11f1.md
Blockchain Wallet Report
Avalanche Fuji (Testnet)
Wallet:
0x7E11f1Ad5b...1C1A457
Chain ID:
43113
1. Summary
Active testnet wallet with multiple test tokens and regular smart contract interactions.
2. Token Holdings
| Token | Balance |
|---|---|
| USD Coin | 310,100 |
| AvaxTest | 9,841,500 |
| Avalanche | 99.99 |
Reply...
Toolkits
Pre-configured collections of blockchain tools for specific use cases. Start researching in seconds.
For Developers
Build on Via402 with our developer platform. Create custom MCP servers, integrate x402 payments, and extend your AI capabilities.
- RESTful API with OpenAPI documentation
- MCP Server integration (Model Context Protocol)
- x402 payment protocol support
- OAuth 2.1 with dynamic client registration
{
"mcpServers": {
"via402": {
"url": "https://mcp.via402.com",
"transport": {
"type": "sse"
}
}
}
}FAQ
Common questions about Via402
Via402 is a platform that connects AI agents to blockchain data through the Model Context Protocol (MCP). It provides pre-configured toolkits for researching wallets, tokens, transactions, and NFTs on Avalanche and other EVM chains. Think of it as a bridge between AI assistants and real-time blockchain information.
x402 is a payment protocol that enables micropayments for API calls using blockchain technology. It's based on HTTP status code 402 ("Payment Required") and allows AI agents to pay for premium data services automatically. This means you can access paid tools without managing complex payment flows - Via402 handles it seamlessly.
Currently, Via402 supports Avalanche Mainnet and Avalanche Fuji Testnet. We're actively working on adding support for more EVM-compatible chains including Ethereum, Base, Polygon, and Arbitrum. Stay tuned for updates!
Via402 offers both free and paid tools. Basic blockchain queries like wallet balances and token info are free. Premium features like detailed activity analysis and comprehensive reports may require x402 micropayments. During our beta phase, many features are available at no cost. You control your spending limits.
Via402 uses the Model Context Protocol (MCP) standard. You can connect it to any MCP-compatible client like Claude Desktop, Cursor, or custom applications. Simply add our MCP server URL to your client configuration and authenticate with your API token. Check our documentation for step-by-step setup guides.