> ## Documentation Index > Fetch the complete documentation index at: https://doc.astreus.ai/llms.txt > Use this file to discover all available pages before exploring further. # News stream (SSE) > Server-Sent Events push of the tape with the feed's filters. Emits `event: items` with a NewsFeedResponse body whenever new or rewritten rows appear (polled every 2 s), a `: ping` comment every 15 s, and closes after ~280 s — reconnect with after=. Without `after` the first event is the current page (≤50 rows). ## OpenAPI ````yaml /openapi.json get /api/v1/news/stream openapi: 3.1.0 info: title: Astreus API version: 1.0.0 description: >- Astreus is a financial data terminal that turns the world's unstructured financial disclosure into structured, traceable data. It reads what companies, exchanges and central banks publish — annual and interim reports, SEC filings, results announcements, investor presentations, earnings calls, 8-Ks, regulator notices and policy text — across the United States, the Gulf (Tadawul, DFM, ADX, Boursa Kuwait, QSE), Japan, Taiwan, Korea, the UK and Europe, and serves it as data a program can trust: standardized financial statements (annual, quarterly, semiannual), segments and KPIs, the tables inside the notes, filing sections as text, investor decks page by page, earnings-call transcripts and audio, span-anchored observations, management guidance scored against outcomes, typed 8-K events, an attributed intraday news tape, insider and 13F ownership, a people registry, point-in-time macro series and central-bank text, benchmark, commodity and compute-price series, and a validated causal claim graph with scenario simulation. Every number carries the filing, page or passage it came from (`fact-source`), and nothing is served until it passes per-company validation gates. Coverage is published live: `GET /api/v1/landing/coverage` (no key) returns every market served with company counts, history depth, completeness and periods held per data type — ask it before answering "what do you cover?". `{id}` is a ticker, a numeric SEC CIK, or a platform key for a non-SEC issuer (XSAU000001) — the `cik` field of the company payload. Human-readable guides: https://doc.astreus.ai (coverage at /coverage, data catalog at /data-catalog). Tiers: `public` endpoints need no credentials. Everything else takes an **API key** — create one on the Developers page in the terminal (https://astreus.ai/developers) and send it as `X-API-KEY: pk_live_...` (or `Authorization: Bearer pk_live_...`). Signed-in terminal sessions may use their Cognito ID token instead. Rate limits and quotas are per plan (fixed UTC windows): Free — 30 req/min, 250 req/day; Build — 300 req/min, 100,000 req/month; Scale — custom. Build, Scale and prepaid credits are set up with sales (https://astreus.ai/contact), not self-serve. Responses carry RateLimit-*, X-Quota-* and, when credits pay, X-Billing-Source/X-Credits-Remaining-USD headers; a 429 carries `Retry-After` and a machine `code` of rate_limited or quota_exceeded (with sales_email). Not investment advice. See /terms. contact: email: saif@astreus.ai termsOfService: https://astreus.ai/terms servers: - url: https://astreus.ai security: [] tags: - name: Search & Meta description: Entity resolution and platform metadata. - name: Company Data description: Profiles, structure, leadership, calendars. - name: Financial Statements description: >- Standardized XBRL-derived statements — every line traceable to its filing via fact provenance. - name: SEC Filings description: >- The filing index and documents (SEC and exchange-published), parsed section text, and the tables inside the notes as gated grids and series. - name: 8-K Events description: Material events, typed by family, with extracted item text. - name: News description: >- The intraday news tape: filings, releases and licensed wires with source attribution, storylines and topics. - name: Transcripts & Calls description: Earnings-call transcripts, span-anchored observations, IR decks. - name: Guidance & Scorecards description: What management promised vs. what happened. - name: Ownership & Insiders description: 13F holders, Forms 3/4/5, the people registry. - name: Macro description: Point-in-time economic series and central-bank text. - name: Market Data description: Daily bars for stocks, benchmarks, commodities and compute. - name: Intelligence description: Narratives, the validated claim graph, scenario simulation. - name: Analytics description: Correlation and charting over any catalog series. paths: /api/v1/news/stream: get: tags: - News summary: News stream (SSE) description: >- Server-Sent Events push of the tape with the feed's filters. Emits `event: items` with a NewsFeedResponse body whenever new or rewritten rows appear (polled every 2 s), a `: ping` comment every 15 s, and closes after ~280 s — reconnect with after=. Without `after` the first event is the current page (≤50 rows). operationId: get-news-stream-sse parameters: - name: after in: query description: 'Resume cursor: only items with id greater than this.' schema: type: integer format: int64 - name: changedSince in: query description: >- ISO 8601; with `after`, also re-send items whose updatedAt is later (headline rewrites, re-tagging). Pass the previous response's serverTime. schema: type: string format: date-time - name: tickers in: query description: Comma-separated tickers; items tagged with any of them. schema: type: string - name: cik in: query description: >- Numeric CIK or platform key; items whose primary company or a tagged company entity is this issuer. schema: type: string - name: topics in: query description: Comma-separated topic codes (see /news/topics); any of them. schema: type: string - name: sources in: query description: Comma-separated source codes (see /news/sources); any of them. schema: type: string - name: excludeSources in: query description: >- Comma-separated source codes to hide (the UI's Markets view hides agency releases, social posts and GDELT links). schema: type: string - name: excludeForms in: query description: >- Comma-separated filing form types to hide (e.g. 4,144,SC 13G); rows without a form are kept. schema: type: string - name: flash in: query description: 1 to return flash (high-priority) items only. schema: type: string enum: - '1' - name: minImportance in: query description: Minimum importance score 0–100. schema: type: integer minimum: 0 maximum: 100 - name: q in: query description: >- Full-text query over headline and snippet (websearch syntax: quoted phrases, OR, -exclusion). schema: type: string responses: '200': description: OK content: text/event-stream: schema: type: string description: >- Server-Sent Events: `event: items` frames carrying a NewsFeedResponse JSON body, `: ping` keep-alive comments. '400': description: Invalid parameter. content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: Missing or invalid bearer token. content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: Unknown company, country, symbol or resource. content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: Rate limited. Honour Retry-After. content: application/json: schema: $ref: '#/components/schemas/Error' security: - apiKey: [] - cognitoIdToken: [] components: schemas: Error: type: object required: - error properties: error: type: string description: Human-readable message. code: type: string description: >- Stable machine code when present: unauthenticated, upgrade_required, rate_limited, quota_exceeded. enum: - unauthenticated - upgrade_required - rate_limited - quota_exceeded securitySchemes: apiKey: type: apiKey in: header name: X-API-KEY description: >- Astreus API key (pk_live_...), created on the Developers page in the terminal. Also accepted as `Authorization: Bearer pk_live_...`. x-default: pk_live_YOUR_KEY cognitoIdToken: type: http scheme: bearer bearerFormat: JWT description: >- Amazon Cognito ID token (token_use=id) for the Astreus user pool — the terminal's own session credential. API consumers should use an API key instead. ````