Grove Public Endpoints MCP Server

Instructions

Implementation Reference

• src/handlers/cosmos-handlers.ts:554-576 (handler)

  MCP tool handler that extracts arguments (blockchain, status, network) and calls CosmosService.getProposals to fetch and return governance proposals.

  case 'get_cosmos_proposals': {
    const blockchain = args?.blockchain as string;
    const status = args?.status as
      | 'deposit_period'
      | 'voting_period'
      | 'passed'
      | 'rejected'
      | 'failed'
      | undefined;
    const network = (args?.network as 'mainnet' | 'testnet') || 'mainnet';
  
    const result = await cosmosService.getProposals(blockchain, status, network);
  
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify(result, null, 2),
        },
      ],
      isError: !result.success,
    };
  }

• src/handlers/cosmos-handlers.ts:232-255 (registration)

  Tool registration definition including name, description, and input schema for get_cosmos_proposals.

  {
    name: 'get_cosmos_proposals',
    description: 'Get governance proposals on a Cosmos chain',
    inputSchema: {
      type: 'object',
      properties: {
        blockchain: {
          type: 'string',
          description: 'Blockchain name',
        },
        status: {
          type: 'string',
          enum: ['deposit_period', 'voting_period', 'passed', 'rejected', 'failed'],
          description: 'Optional: Filter by proposal status',
        },
        network: {
          type: 'string',
          enum: ['mainnet', 'testnet'],
          description: 'Network type (defaults to mainnet)',
        },
      },
      required: ['blockchain'],
    },
  },

• src/handlers/cosmos-handlers.ts:235-254 (schema)

  Input schema defining parameters for the get_cosmos_proposals tool.

  inputSchema: {
    type: 'object',
    properties: {
      blockchain: {
        type: 'string',
        description: 'Blockchain name',
      },
      status: {
        type: 'string',
        enum: ['deposit_period', 'voting_period', 'passed', 'rejected', 'failed'],
        description: 'Optional: Filter by proposal status',
      },
      network: {
        type: 'string',
        enum: ['mainnet', 'testnet'],
        description: 'Network type (defaults to mainnet)',
      },
    },
    required: ['blockchain'],
  },

• src/services/cosmos-service.ts:274-291 (helper)

  Core helper method in CosmosService that constructs the REST API URL for governance proposals and fetches the data.

  async getProposals(
    blockchain: string,
    status?: 'deposit_period' | 'voting_period' | 'passed' | 'rejected' | 'failed',
    network: 'mainnet' | 'testnet' = 'mainnet'
  ): Promise<EndpointResponse> {
    try {
      const baseUrl = this.getRestUrl(blockchain, network);
      const statusFilter = status ? `?proposal_status=${status}` : '';
      const url = `${baseUrl}/cosmos/gov/v1beta1/proposals${statusFilter}`;
  
      return this.fetchRest(url);
    } catch (error) {
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Failed to get Cosmos proposals',
      };
    }
  }