Build news event timeline API

Order supplied events or dated articles into a timeline without inventing missing dates.

The Build news event timeline operation is part of the News Verification & Information Intelligence API on BRAINIAC.software. Order supplied events or dated articles into a timeline without inventing missing dates. It is exposed as POST /api/v1/news-intelligence/event-timeline-build and priced at $0.04 USDC on Base. Payment uses the x402 exact scheme: an unpaid call returns HTTP 402 with payment requirements; after paying the exact USDC amount, retry the same request with a payment-signature header and Idempotency-Key. No account and no API key are required. Data sources for this product: Caller-supplied articles, claims, and events Public RSS/Atom feeds when rss.url is requested Limitations: No paid news API is used and no API key is required. Repeated publication or syndication of the same claim is never treated as independent confirmation. Claim extraction uses local heuristics on supplied text. Missing quotes are not invented. Source independence counts distinct outlets; syndicated copies stay non-independent. RSS/Atom items are used only when a public feed URL is supplied. Outputs are compliance prechecks, drafts, or data lookups for human review. They are not official determinations, legal advice, identity confirmation, or certified filings. Related operations in this group include Trace original news sources, Cluster syndicated news articles, Extract news claims, Match claims to sources. Open the group documentation for the full request schema, field notes, and response examples before integrating.

POST$0.04 USDC
/api/v1/news-intelligence/event-timeline-build

Example request

curl -i -X POST "https://www.brainiac.software/api/v1/news-intelligence/event-timeline-build" \
  -H 'content-type: application/json' \
  -H 'Idempotency-Key: <fresh-64-character-random-hex-key>' \
  --data-binary @- <<'JSON'
{
  "events": [
    {
      "id": "E-1",
      "date": "2026-10-01",
      "country": "US",
      "title": "Relief package announced",
      "articleId": "A-1",
      "source": "Official Wire"
    },
    {
      "id": "E-2",
      "date": "2026-10-03",
      "country": "US",
      "title": "Aid distribution begins",
      "articleId": "A-3",
      "source": "City Paper"
    }
  ]
}
JSON

An unpaid probe returns HTTP 402 with x402 payment requirements. After paying the exact USDC amount on Base, retry the identical request with a payment-signature header.

FAQ

  • Do I need an API key? No. Pay the listed USDC amount with x402.
  • What network? Base (eip155:8453), USDC.
  • Is this an official determination? No. Results are for human review against the cited sources.

Related APIs

News Verification & Information Intelligence APIFull docsHow it works