MetaMask MCP

MIT License

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switch-chain

Switch blockchain networks in MetaMask MCP by specifying the chain ID. Add new chains by providing essential parameters like chain name, native currency, and RPC URLs.

Instructions

Switch the target chain.

Input Schema

Name	Required	Description	Default
`addEthereumChainParameter`	No	Add not configured chains to Ethereum wallets.
`chainId`	Yes	ID of chain to switch to.

Input Schema (JSON Schema)

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false,
  "properties": {
    "addEthereumChainParameter": {
      "additionalProperties": false,
      "description": "Add not configured chains to Ethereum wallets.",
      "properties": {
        "blockExplorerUrls": {
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        "chainName": {
          "type": "string"
        },
        "iconUrls": {
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        "nativeCurrency": {
          "additionalProperties": false,
          "properties": {
            "decimals": {
              "type": "number"
            },
            "name": {
              "type": "string"
            },
            "symbol": {
              "type": "string"
            }
          },
          "required": [
            "name",
            "symbol",
            "decimals"
          ],
          "type": "object"
        },
        "rpcUrls": {
          "items": {
            "type": "string"
          },
          "minItems": 1,
          "type": "array"
        }
      },
      "required": [
        "chainName",
        "nativeCurrency",
        "rpcUrls"
      ],
      "type": "object"
    },
    "chainId": {
      "description": "ID of chain to switch to.",
      "type": "number"
    }
  },
  "required": [
    "chainId"
  ],
  "type": "object"
}

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