feat: Add Cronos Evm

packages/plugin-cronos/README.md

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+# @elizaos/plugin-cronos
+
+Cronos plugin for Eliza, extending the EVM plugin functionality.
+
+## Supported Networks
+
+### Mainnet
+- Cronos Mainnet (Chain ID: 25)
+  - RPC Endpoint: https://evm.cronos.org/
+  - Explorer: https://explorer.cronos.org/
+  - Native Token: CRO
+
+### Testnet
+- Cronos Testnet 3 (Chain ID: 338)
+  - RPC Endpoint: https://evm-t3.cronos.org/
+  - Explorer: https://cronos.org/explorer/testnet3
+  - Native Token: TCRO
+
+## Installation
+
+```bash
+pnpm add @elizaos/plugin-cronos
+```
+
+## Usage
+
+### Basic Setup
+```typescript
+import { cronosPlugin } from "@elizaos/plugin-cronos";
+
+// Use the plugin in your Eliza configuration
+const config = {
+    plugins: [cronosPlugin],
+    // ... rest of your config
+};
+```
+
+### Character Configuration Guide
+
+Create a `your-character.character.json` file with the following structure:
+
+```json
+{
+    "name": "YourCharacterName",
+    "plugins": ["@elizaos/plugin-cronos"],
+    "clients": ["telegram"],
+    "modelProvider": "openai",
+    "settings": {
+        "secrets": {},
+        "chains": {
+            "evm": ["cronos", "cronosTestnet"]
+        }
+    },
+    "system": "Primary function is to execute token transfers and check balances on Cronos chain.",
+    "actions": {
+        "SEND_TOKEN": {
+            "enabled": true,
+            "priority": 1,
+            "force": true,
+            "schema": {
+                "type": "object",
+                "properties": {
+                    "fromChain": {
+                        "type": "string",
+                        "description": "The chain to execute the transfer on",
+                        "enum": ["cronos", "cronosTestnet"]
+                    },
+                    "toAddress": {
+                        "type": "string",
+                        "description": "The recipient's wallet address",
+                        "pattern": "^0x[a-fA-F0-9]{40}$"
+                    },
+                    "amount": {
+                        "type": "string",
+                        "description": "The amount of tokens to transfer",
+                        "pattern": "^[0-9]*(\\.[0-9]+)?$"
+                    }
+                },
+                "required": ["fromChain", "toAddress", "amount"]
+            },
+            "triggers": [
+                "send * CRO to *",
+                "transfer * CRO to *"
+            ],
+            "examples": [
+                {
+                    "input": "Send 0.1 CRO to 0x...",
+                    "output": {
+                        "fromChain": "cronos",
+                        "toAddress": "0x...",
+                        "amount": "0.1"
+                    }
+                }
+            ]
+        },
+        "CHECK_BALANCE": {
+            "enabled": true,
+            "priority": 1,
+            "force": true,
+            "schema": {
+                "type": "object",
+                "properties": {
+                    "chain": {
+                        "type": "string",
+                        "description": "The chain to check balance on",
+                        "enum": ["cronos", "cronosTestnet"]
+                    }
+                },
+                "required": ["chain"]
+            },
+            "triggers": [
+                "check balance",
+                "show balance",
+                "what's my balance",
+                "how much CRO do I have",
+                "check balance on *",
+                "show balance on *"
+            ],
+            "examples": [
+                {
+                    "input": "check balance",
+                    "output": {
+                        "chain": "cronos"
+                    }
+                },
+                {
+                    "input": "what's my balance on testnet",
+                    "output": {
+                        "chain": "cronosTestnet"
+                    }
+                }
+            ]
+        }
+    },
+    "messageExamples": [
+        [
+            {
+                "user": "{{user1}}",
+                "content": {
+                    "text": "Send 100 CRO to 0x..."
+                }
+            },
+            {
+                "user": "YourCharacterName",
+                "content": {
+                    "text": "Processing token transfer...",
+                    "action": "SEND_TOKEN"
+                }
+            }
+        ],
+        [
+            {
+                "user": "{{user1}}",
+                "content": {
+                    "text": "What's my balance?"
+                }
+            },
+            {
+                "user": "YourCharacterName",
+                "content": {
+                    "text": "Checking your balance...",
+                    "action": "CHECK_BALANCE"
+                }
+            }
+        ]
+    ]
+}
+```
+
+#### Key Configuration Fields:
+
+1. **Basic Setup**
+   - `name`: Your character's name
+   - `plugins`: Include `@elizaos/plugin-cronos`
+   - `clients`: Supported client platforms
+
+2. **Chain Settings**
+   - Configure both mainnet and testnet in `settings.chains.evm`
+   - Available options: `"cronos"` (mainnet) and `"cronosTestnet"`
+
+3. **Action Configuration**
+   - `SEND_TOKEN`: Action for token transfers
+   - `CHECK_BALANCE`: Action for checking wallet balance
+   - `schema`: Defines the required parameters for each action
+   - `triggers`: Phrases that activate the actions
+   - `examples`: Sample inputs and outputs
+
+4. **Message Examples**
+   - Provide example interactions
+   - Show how actions are triggered
+   - Demonstrate expected responses
+
+### Action Examples
+```
+// Send tokens on mainnet
+"Send 0.1 CRO to 0x..." use mainnet
+
+// Send tokens on testnet
+"Send 0.1 TCRO to 0x..." use testnet
+
+// Check balance on mainnet
+"check balance"
+"what's my balance"
+"how much CRO do I have"
+
+// Check balance on testnet
+"check balance on testnet"
+"what's my balance on testnet"
+```
+
+## Features
+
+- All standard EVM functionality inherited from @elizaos/plugin-evm
+- Preconfigured for both Cronos Mainnet and Testnet
+- Native CRO/TCRO token support
+- Automated token transfer actions
+- Balance checking functionality
+- Built-in chain configuration
+
+## Environment Variables
+
+Required environment variable for transactions:
+
+```env
+# Wallet private key (Required, must start with 0x)
+CRONOS_PRIVATE_KEY=0x...
+```
+
+### Security Warnings ⚠️
+
+- **NEVER** commit private keys to version control
+- **NEVER** share private keys with anyone
+- **ALWAYS** use environment variables or secure key management
+- Use separate keys for mainnet and testnet
+- Monitor your wallet for unauthorized transactions
+
+### Setup
+
+1. Create `.env` file:
+```env
+CRONOS_PRIVATE_KEY=0x...  # Mainnet
+```
+
+2. For testnet development, use `.env.local`:
+```env
+CRONOS_PRIVATE_KEY=0x...  # Testnet only
+```
+
+3. Add to `.gitignore`:
+```
+.env
+.env.*
+```
+
+## License
+
+MIT

packages/plugin-cronos/package.json

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+{
+    "name": "@elizaos/plugin-cronos",
+    "version": "0.0.1",
+    "type": "module",
+    "main": "dist/index.js",
+    "module": "dist/index.js",
+    "types": "dist/index.d.ts",
+    "exports": {
+        "./package.json": "./package.json",
+        ".": {
+            "import": {
+                "@elizaos/source": "./src/index.ts",
+                "types": "./dist/index.d.ts",
+                "default": "./dist/index.js"
+            }
+        }
+    },
+    "files": [
+        "dist"
+    ],
+    "scripts": {
+        "build": "tsup --format esm --dts"
+    },
+    "dependencies": {
+        "@elizaos/core": "workspace:*",
+        "node-cache": "^5.1.2",
+        "viem": "^2.0.0"
+    },
+    "devDependencies": {
+        "tsup": "^8.0.1",
+        "typescript": "^5.3.3"
+    }
+}