guardian-mcp-server/dist/tools/guardian-lookback.js

MCP server for The Guardian newspaper

import { LookbackParamsSchema } from '../types/guardian.js';
import { formatArticleResponse, validateDate } from '../utils/formatters.js';
export async function guardianLookback(client, args) {
    const params = LookbackParamsSchema.parse(args);
    const fromDate = validateDate(params.date);
    if (!fromDate) {
        throw new Error(`Invalid date format: ${params.date}. Use YYYY-MM-DD format.`);
    }
    const searchParams = {
        'from-date': fromDate,
        'order-by': 'newest',
        'page-size': params.page_size || 20,
        'show-fields': 'headline,standfirst,byline,publication,firstPublicationDate'
    };
    if (params.end_date) {
        const toDate = validateDate(params.end_date);
        if (!toDate) {
            throw new Error(`Invalid end_date format: ${params.end_date}. Use YYYY-MM-DD format.`);
        }
        searchParams['to-date'] = toDate;
    }
    else {
        // If no end date, use the same date
        searchParams['to-date'] = fromDate;
    }
    if (params.section) {
        searchParams.section = params.section;
    }
    const response = await client.search(searchParams);
    const articles = response.response.results;
    const pagination = response.response;
    // For search results, default to truncated content for performance
    const formatOptions = { truncate: true, maxLength: 500 };
    return formatArticleResponse(articles, pagination, formatOptions);
}
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