> ## Documentation Index > Fetch the complete documentation index at: https://docs.nordicfinancialnews.com/llms.txt > Use this file to discover all available pages before exploring further. # Get Index Details > Returns details for a single index, including description and company count. Look up by index ID or symbol (case-insensitive, e.g. `OMXS30`). Note: `companies_count` reflects the number of distinct companies in the index, which may be less than the number of index constituents when a company has multiple share classes listed. ## OpenAPI ````yaml https://nordicfinancialnews.com/openapi/v1/openapi.yaml get /api/v1/indices/{identifier} openapi: 3.0.1 info: title: Nordic Financial News API version: v1.0 description: > REST API for Nordic financial news. Each article is summarized in English (headline, short summary, and key points) with the original-language article linked via `article_url`. The full article body stays at the source. ## Authentication All endpoints require Bearer token authentication using an API key. Include the API key in the Authorization header: ``` Authorization: Bearer YOUR_API_KEY ``` ## Rate Limiting The API enforces per-hour rate limits based on your plan: - **Free**: 100 requests/hour - **Pro**: 5,000 requests/hour Rate limit information is included in response headers: - `X-RateLimit-Limit`: Maximum requests per hour - `X-RateLimit-Remaining`: Requests remaining - `X-RateLimit-Reset`: Seconds until limit resets - `X-RateLimit-Policy`: Human-readable rate limit policy (e.g. `5000 per hour; token bucket`) The `/health` endpoint is exempt from rate limiting and does not return rate limit headers. ## Monthly Usage Limits Each API key has a monthly request allowance based on your plan: - **Free**: 50 requests/month - **Plus**: 10,000 requests/month - **Pro**: 50,000 requests/month Monthly usage information is included in response headers: - `X-Monthly-Limit`: Maximum requests per month - `X-Monthly-Remaining`: Requests remaining this month - `X-Monthly-Reset`: ISO 8601 timestamp when the limit resets (end of month) When the monthly limit is exceeded, the API returns `429 Too Many Requests` with a `Retry-After` header. ## Caching The API supports HTTP caching with ETags. Include the `If-None-Match` header with the ETag from a previous response to receive a 304 Not Modified response if the data hasn't changed. ## Pagination List endpoints support cursor-based pagination. Use the `cursor` parameter with the value from `pagination.next_cursor` in the response to fetch the next page. Paginated responses also include a `Link` header with `rel="next"` pointing to the next page URL. ## Error Handling Errors follow the RFC 9457 Problem Details format with appropriate HTTP status codes. contact: name: API Support email: hello@nordicfinancialnews.com servers: - url: https://nordicfinancialnews.com description: Production server security: [] paths: /api/v1/indices/{identifier}: parameters: - name: identifier in: path required: true description: Index ID or symbol (e.g. `OMXS30`) schema: type: string get: tags: - Indices summary: Get Index Details description: >- Returns details for a single index, including description and company count. Look up by index ID or symbol (case-insensitive, e.g. `OMXS30`). Note: `companies_count` reflects the number of distinct companies in the index, which may be less than the number of index constituents when a company has multiple share classes listed. responses: '200': description: Index retrieved successfully content: application/json: schema: type: object properties: index: $ref: '#/components/schemas/IndexDetail' required: - index '404': description: Stock index not found content: application/json: examples: not_found: value: type: https://docs.nordicfinancialnews.com/problems/not-found title: Not Found status: 404 detail: The requested resource could not be found instance: urn:request:abc123 schema: $ref: '#/components/schemas/problem_details' security: - bearer_auth: [] components: schemas: IndexDetail: allOf: - $ref: '#/components/schemas/IndexSummary' - type: object properties: description: type: string nullable: true description: Index description example: The 30 most-traded stocks on Nasdaq Stockholm companies_count: type: integer description: >- Number of distinct companies in this index (may be less than constituents when a company has multiple share classes) example: 30 problem_details: type: object required: - type - title - status - detail - instance properties: type: type: string description: URI that identifies the problem type title: type: string description: Short human-readable summary status: type: integer description: HTTP status code detail: type: string description: Human-readable explanation instance: type: string description: URI that identifies the specific occurrence IndexSummary: type: object required: - id - name - symbol properties: id: type: string description: Unique stock index identifier example: idx_omxs30abc name: type: string description: Index display name example: OMX Stockholm 30 symbol: type: string description: Index symbol example: OMXS30 pan_nordic: type: boolean description: >- True if the index spans multiple Nordic exchanges (e.g. OMXN40), false if tied to a single exchange (e.g. OMXS30) example: false exchange: type: object nullable: true description: Exchange associated with this index properties: id: type: string name: type: string mic_code: type: string securitySchemes: bearer_auth: type: http scheme: bearer bearerFormat: API Key description: API Key authentication using Bearer token ````