MainStreet

What is MainStreet?

MainStreet is an onchain AI-agent reputation oracle for the Base network. It provides a 0–100 score plus a SAFE/CAUTION/BLOCK verdict for any Base wallet, agent, token deployer, or x402 endpoint in under 100ms, with results EIP-712 signed and verifiable onchain against the MainStreetVerifier contract.

How to use MainStreet?

Use the 19 MCP tools to preflight, verify, score, vet, and compare agents before paying them. Free reads are available (100 per day per IP); for higher volume, pay-per-call audits are conducted over x402 using USDC on Base.

Key features of MainStreet

• 0–100 reputation score for any Base address
• SAFE/CAUTION/BLOCK verdict returned in <100ms
• EIP-712 signed and verifiable onchain
• 19 MCP tools for preflight and comparison
• 100 free reads per day per IP address
• Pay-per-call audits via x402 (USDC on Base)

Use cases of MainStreet

• Preflight an agent before authorizing a payment
• Verify the reputation of a token deployer on Base
• Vet an x402 endpoint before interacting
• Compare multiple agents to choose the most trustworthy

FAQ from MainStreet

How can I verify a reputation score onchain?

The score and verdict are EIP-712 signed and can be verified onchain against the MainStreetVerifier contract.

What is x402 and how does billing work?

x402 is a pay-per-call protocol. For audit calls beyond the free tier, you pay with USDC on Base per request.

Are there rate limits for free usage?

Yes, free reads are limited to 100 per day per IP address.

What types of addresses are supported?

Any Base wallet, agent, token deployer, or x402 endpoint can be scored.

How do I access the MCP tools?

The server provides 19 MCP tools. No specific installation steps are provided in the README.