MCP Helius

Instructions

Implementation Reference

• src/handlers/helius.ts:402-415 (handler)

  The main handler function that executes the tool logic by mapping input to Helius RPC call getAssetsByAuthority and returning the result.

  export const getAssetsByAuthorityHandler = async (input: GetAssetsByAuthorityInput): Promise<ToolResultSchema> => {
    try {
      // Fix the parameter name mismatch
      const params = {
        authorityAddress: input.authority, // Change authority to authorityAddress
        page: input.page || 1,
        limit: input.limit || 10
      };
      const assets = await (helius as any as Helius).rpc.getAssetsByAuthority(params);
      return createSuccessResponse(`Assets by authority: ${JSON.stringify(assets, null, 2)}`);
    } catch (error) {
      return createErrorResponse(`Error getting assets by authority: ${error instanceof Error ? error.message : String(error)}`);
    }
  }

• src/tools.ts:359-371 (schema)

  JSON schema definition for the tool input validation.

  {
    name: 'helius_get_assets_by_authority',
    description: 'Get assets by authority address',
    inputSchema: {
      type: 'object',
      properties: {
        authority: { type: 'string' },
        page: { type: 'number' },
        limit: { type: 'number' }
      },
      required: ['authority']
    }
  },

• src/tools.ts:579-579 (registration)

  Registration of the tool name to its handler function in the handlers dictionary.

  "helius_get_assets_by_authority": helius.getAssetsByAuthorityHandler,

• src/handlers/helius.types.ts:202-206 (schema)

  TypeScript type definition for the handler input, matching the JSON schema.

  export type GetAssetsByAuthorityInput = {
    authority: string;
    page?: number;
    limit?: number;
  }