MCP Helius

Instructions

Implementation Reference

• src/handlers/helius.ts:429-442 (handler)

  The handler function that executes the tool logic: calls Helius RPC getSignaturesForAsset with id, page, limit, and formats the response.

  export const getSignaturesForAssetHandler = async (input: GetSignaturesForAssetInput): Promise<ToolResultSchema> => {
    try {
      // Fix the parameter type mismatch
      const params = {
        id: input.id,
        page: input.page || 1, // Default to page 1 if not provided
        limit: input.limit || 10 // Default to 10 if not provided
      };
      const signatures = await (helius as any as Helius).rpc.getSignaturesForAsset(params);
      return createSuccessResponse(`Signatures for asset: ${JSON.stringify(signatures, null, 2)}`);
    } catch (error) {
      return createErrorResponse(`Error getting signatures for asset: ${error instanceof Error ? error.message : String(error)}`);
    }
  }

• src/tools.ts:410-422 (schema)

  The input schema definition for the tool, defining parameters id (required string), page (number), limit (number).

  {
    name: 'helius_get_signatures_for_asset',
    description: 'Get signatures associated with an asset',
    inputSchema: {
      type: 'object',
      properties: {
        id: { type: 'string' },
        page: { type: 'number' },
        limit: { type: 'number' }
      },
      required: ['id']
    }
  },

• src/tools.ts:581-581 (registration)

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

  "helius_get_signatures_for_asset": helius.getSignaturesForAssetHandler,