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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | 18x 18x 5x 5x 5x 13x 13x 3x 2x 10x 10x 10x 9x 2x 4x | /**
* MCP Tool: get_external_documents
*
* Retrieve external documents (non-EP documents) from the European Parliament data portal,
* with optional single document lookup.
*
* **Intelligence Perspective:** External documents include inter-institutional communications,
* Council positions, and Commission proposals relevant to EP legislative work.
*
* **Business Perspective:** Provides access to external reference documents needed
* for complete regulatory intelligence.
*
* **EP API Endpoints:**
* - `GET /external-documents` (list)
* - `GET /external-documents/{doc-id}` (single)
*
* ISMS Policy: SC-002 (Input Validation), AC-003 (Least Privilege)
*/
import { GetExternalDocumentsSchema } from '../schemas/europeanParliament.js';
import { epClient } from '../clients/europeanParliamentClient.js';
import { buildToolResponse } from './shared/responseBuilder.js';
import { ToolError } from './shared/errors.js';
import { z } from 'zod';
import type { ToolResult } from './shared/types.js';
/**
* Handles the get_external_documents MCP tool request.
*
* Retrieves external documents (non-EP documents such as Council positions and Commission
* proposals) from the European Parliament data portal. Supports both a paginated list view
* and a single-document lookup when `docId` is provided.
*
* @param args - Raw tool arguments, validated against {@link GetExternalDocumentsSchema}
* @returns MCP tool result containing external document data (single document or paginated list)
* @throws - If `args` fails schema validation (e.g., invalid field types or formats)
* - If the European Parliament API is unreachable or returns an error response
*
* @example
* ```typescript
* // Single document lookup
* const single = await handleGetExternalDocuments({ docId: 'COM-2024-123' });
* // Returns the external document with ID COM-2024-123
*
* // List documents filtered by year
* const list = await handleGetExternalDocuments({ year: 2024, limit: 30, offset: 0 });
* // Returns up to 30 external documents from 2024
* ```
*
* @security - Input is validated with Zod before any API call.
* - Personal data in responses is minimised per GDPR Article 5(1)(c).
* - All requests are rate-limited and audit-logged per ISMS Policy AU-002.
* @since 0.8.0
* @see {@link getExternalDocumentsToolMetadata} for MCP schema registration
* @see {@link handleSearchDocuments} for full-text search across EP legislative documents
*/
export async function handleGetExternalDocuments(args: unknown): Promise<ToolResult> {
// Validate input — ZodErrors here are client mistakes (non-retryable)
let params: ReturnType<typeof GetExternalDocumentsSchema.parse>;
try {
params = GetExternalDocumentsSchema.parse(args);
} catch (error: unknown) {
Eif (error instanceof z.ZodError) {
const fieldErrors = error.issues.map((e) => `${e.path.join('.')}: ${e.message}`).join('; ');
throw new ToolError({
toolName: 'get_external_documents',
operation: 'validateInput',
message: `Invalid parameters: ${fieldErrors}`,
isRetryable: false,
cause: error,
});
}
throw error;
}
try {
if (params.docId !== undefined) {
const result = await epClient.getExternalDocumentById(params.docId);
return buildToolResponse(result);
}
const apiParams: Record<string, unknown> = {
limit: params.limit,
offset: params.offset,
};
if (params.year !== undefined) apiParams['year'] = params.year;
const result = await epClient.getExternalDocuments(
apiParams as Parameters<typeof epClient.getExternalDocuments>[0]
);
return buildToolResponse(result);
} catch (error: unknown) {
throw new ToolError({
toolName: 'get_external_documents',
operation: 'fetchData',
message: 'Failed to retrieve external documents',
isRetryable: true,
cause: error,
});
}
}
/** Tool metadata for get_external_documents */
export const getExternalDocumentsToolMetadata = {
name: 'get_external_documents',
description:
'Get external documents (non-EP documents such as Council positions, Commission proposals) from the European Parliament data portal. Supports single document lookup by docId. Data source: European Parliament Open Data Portal.',
inputSchema: {
type: 'object' as const,
properties: {
docId: { type: 'string', description: 'Document ID for single document lookup' },
year: { type: 'number', description: 'Filter by year' },
limit: { type: 'number', description: 'Maximum results to return (1-100)', default: 50 },
offset: { type: 'number', description: 'Pagination offset', default: 0 },
},
},
};
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