Grove's MCP Server for Pocket Network

Instructions

Implementation Reference

• src/handlers/transaction-handlers.ts:187-203 (handler)

  The handler logic for the 'estimate_gas' tool. Extracts parameters from args and delegates to AdvancedBlockchainService.estimateGas, then formats the response as MCP content.

  case 'estimate_gas': {
    const blockchain = args?.blockchain as string;
    const transaction = args?.transaction as any;
    const network = (args?.network as 'mainnet' | 'testnet') || 'mainnet';
  
    const result = await advancedBlockchain.estimateGas(blockchain, transaction, network);
  
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify(result, null, 2),
        },
      ],
      isError: !result.success,
    };
  }

• src/handlers/transaction-handlers.ts:65-83 (schema)

  Input schema definition for the 'estimate_gas' tool, specifying required blockchain, transaction object, and optional network.

  inputSchema: {
    type: 'object',
    properties: {
      blockchain: {
        type: 'string',
        description: 'Blockchain name',
      },
      transaction: {
        type: 'object',
        description: 'Transaction object with from, to, data, value, etc.',
      },
      network: {
        type: 'string',
        enum: ['mainnet', 'testnet'],
        description: 'Network type (defaults to mainnet)',
      },
    },
    required: ['blockchain', 'transaction'],
  },

• src/handlers/transaction-handlers.ts:62-84 (registration)

  Tool object registration for 'estimate_gas' returned by registerTransactionHandlers, including name, description, and schema. Added to global tools list in src/index.ts.

  {
    name: 'estimate_gas',
    description: 'Estimate gas required for a transaction',
    inputSchema: {
      type: 'object',
      properties: {
        blockchain: {
          type: 'string',
          description: 'Blockchain name',
        },
        transaction: {
          type: 'object',
          description: 'Transaction object with from, to, data, value, etc.',
        },
        network: {
          type: 'string',
          enum: ['mainnet', 'testnet'],
          description: 'Network type (defaults to mainnet)',
        },
      },
      required: ['blockchain', 'transaction'],
    },
  },

• src/services/advanced-blockchain-service.ts:75-94 (helper)

  Supporting method in AdvancedBlockchainService that performs the actual RPC call to 'eth_estimateGas' via the blockchain service.

  async estimateGas(
    blockchain: string,
    transaction: any,
    network: 'mainnet' | 'testnet' = 'mainnet'
  ): Promise<EndpointResponse> {
    const service = this.blockchainService.getServiceByBlockchain(blockchain, network);
  
    if (!service) {
      return {
        success: false,
        error: `Blockchain service not found: ${blockchain} (${network})`,
      };
    }
  
    return this.blockchainService.callRPCMethod(
      service.id,
      'eth_estimateGas',
      [transaction]
    );
  }