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What is CATO?

CATO is a Model Context Protocol (MCP) server that provides AI agents with comprehensive access to the Cronos blockchain ecosystem. It enables Large Language Models to autonomously interact with Cronos chains, query blockchain data, access documentation, and assist developers with DApp development.

Multi-Chain Support

Query EVM, zkEVM, and POS chains simultaneously

Knowledge Base

150+ SDK examples, contract templates, and guides

AI-Native Design

Built specifically for autonomous agent interaction

Developer Tools

Error debugging, yield comparison, bridge routing

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Quick Start

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MCP Server Endpoint

The CATO MCP server is available at: 
https://cato-server.vercel.app/mcp
Use this endpoint to connect your AI client or application to the CATO server.

Installation & Setup

Get CATO running in 5 minutes with our quickstart guide.

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Core Features

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🪙 Portfolio Management

Aggregate token balances across all Cronos chains with support for both EVM (0x…) and Bech32 (cro1…) addresses.

get_unified_portfolio

Multi-chain balance aggregation with automatic token detection

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💰 DeFi Analytics

Compare yield opportunities across Tectonic, VVS Finance, and Fulcrom with risk assessments.

find_best_yield

Smart yield comparison with risk ratings and TVL analysis

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🐛 Developer Tools

Transaction Debugger

Decode revert reasons with human-readable explanations

SDK Documentation

Search 150+ code examples across TypeScript, Python, Rust

Contract Templates

Production-ready smart contract templates

Bridge Guides

Step-by-step cross-chain transfer instructions

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💳 Payment Technology

x402 Gasless Payments

Enable gasless payments with x402 payment protocol integration

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Documentation Sections

MCP Server Guide

Complete guide to installation, configuration, architecture, and development.

API Reference

Comprehensive API documentation for all MCP tools and resources.

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Use Cases

  • Find SDK examples and documentation
  • Get smart contract templates
  • Debug transaction errors
  • Learn cross-chain bridging

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Why Choose CATO?

Zero Blockchain Expertise

Ask questions in natural language

Read-Only Access

Safe exploration without wallet risk

Multi-Chain Native

Access all Cronos chains at once

Rich Knowledge Base

150+ examples and templates

Production Ready

Battle-tested and reliable

Open Source

MIT licensed, community driven

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Example Queries

Once configured with Claude Desktop, you can ask: 
"What tokens does 0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb0 hold on Cronos?"

"Find me safe yield opportunities above 5% APY"

"Why did this transaction fail: 0xabc123..."

"Show me how to deploy an ERC-20 token"

"How do I bridge CRO from POS to EVM?"

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Getting Help

Quickstart Guide

Get up and running quickly

MCP Server Docs

Comprehensive server documentation

GitHub Issues

Report bugs and request features

Discord Community

Get help from the community

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Built With

Ready to get started? Follow our quickstart guide to install and configure CATO with Claude Desktop.