narrative endpoint returns an editorial summary of the dominant storyline on a topic or watchlist over the last rolling window, plus a structured breakdown of sub-narratives and their relative weights. Where trending gives you words and alerts gives you events, narrative gives you the story — written in English by the editorial summarisation pipeline, ready to drop into a tile, a digest, or a brief.
What “alpha” means here
Concretely, today:- The endpoint shape is stable.
summary,sub_narratives[],data_freshness,snapshot_idare the contract — these fields will not be removed without a major version bump. Build against them now. - The summary length, voice, and sectioning are evolving. Today summaries are 1–3 sentences in a neutral editorial register. We are actively prototyping longer-form briefs, audience-tuned voices (newsroom / SOC / brand / regulator), and structured “what / who / where / why” breakdowns.
- Per-customer tailoring is on the immediate roadmap. Know-tier customers will be able to specify register, length, audience, and inclusion/exclusion preferences for the narrative on their own watchlists and private topics. The shape of that configuration is being decided now, with input from design-partner customers.
- Historical narratives (
/narratives/history) are stable and unaffected by this alpha — that surface is See/Know-tier production.
The endpoints
This page covers the latest narrative endpoints. History and evidence are documented in Topics and watchlists.
The response envelope
Field guide
The structural fields (
weight, lead_terms, domain_count, language_count, source_diversity) are the safe ones to build automation against today. The prose fields (summary, sub_narratives[].title) are where we expect the most evolution as we tailor for customers.
Calling it
Reading the response
summary
Plain English, neutral register, drop straight into a Slack tile or email digest. Today’s summaries are 1–3 sentences. They are designed to be readable by a non-technical reader (an exec, a comms lead, a duty editor) without context.
Do not parse the summary in code. Treat it as an opaque string. If your application needs structured fields (entities mentioned, sentiment, geography), use the sub_narratives[] breakdown or pivot into entities and clusters.
sub_narratives[]
The dominant story is rarely monolithic — it’s usually composed of 2–5 threads with different emphases. sub_narratives[] exposes those threads with weights summing to roughly 1.0. Use them to:
- power a “what’s in the mix” expandable on a dashboard,
- detect a pivot (a thread’s weight jumping snapshot-over-snapshot),
- route to the right team (an Iran-Israel sub-narrative on
globalgoes to the foreign desk; an ECB sub-narrative goes to the markets desk).
source_diversity
The breadth of the conversation. A narrative with 263 domains and 21 languages is a genuinely global story; one with 12 domains and 2 languages is regional or niche. Useful as a filter for “is this worth surfacing to leadership.”
Cadence
Narrative regenerates on the same snapshot cadence as trending — every few minutes. The summarisation step is more expensive than ranking, so individual narrative responses may lag a snapshot or two behind trending under heavy load.data_freshness.snapshot_age_seconds always reflects the actual age of the data backing this narrative.
Polling faster than the snapshot cadence is wasted RPM. See Rate limits.
Narrative on a watchlist
Same shape, scoped to your watchlist’s terms. Particularly useful for brand and risk monitoring — the narrative around your scope often diverges from the topic baseline.acme-monitoring watchlist might surface a sub-narrative around an executive announcement that is invisible at the global level — exactly the kind of “what is my story” view that benefits most from per-customer voice tailoring.
Historical narratives (stable surface)
/v1/topics/{topic}/narratives/history returns the time-series of narrative shifts — when sub-narratives entered, peaked, and faded. Same envelope shape as the latest endpoint, plus a narratives[] array indexed by snapshot. Available See+ and not in alpha — the contract is stable. See Topics and watchlists.
Roadmap and how to influence it
The shortlist of items actively under design, in priority order:- Audience-tuned voice. Per-key configuration of register:
editorial,analyst,executive,regulator. Same data, different tone. - Per-customer brief format. Optional structured sections (
what,who,where,why_it_matters) for customers building automated briefs. - Length controls.
concise(1 sentence),default(1–3),brief(paragraph),report(multi-paragraph with sub-headers). - Inclusion/exclusion lexicons. Customer-specific stopwords and “always mention if present” terms baked into summarisation.
- Narrative deltas. A
vs_previous_snapshotfield describing what changed — “ECB pivot rumours overtook Eurovision as the second-largest thread.” - Multi-language summaries. French, German, Spanish, Arabic native summaries — not translations.
How to engage
- Email [email protected] with one paragraph: who you are, what scope you’d use narrative on, what shape of output would make it indispensable for your workflow.
- Or book a 30-minute design call via the same address — we run these weekly with prospective design partners.
- Or just send the JSON shape you wish you got back and we’ll tell you whether and when we can ship it.
Operational guidance
- Don’t parse
summary. It’s prose, not structured data. Usesub_narratives[].titleandlead_termsfor structured logic. - Watch
weightshifts snapshot-over-snapshot to detect narrative pivots — often the most valuable signal narrative gives you. - Pair with trending for full state coverage: trending shows the spike, narrative shows the story it composes.
- Pair with alerts for full event coverage: an alert is the moment a sub-narrative is born; narrative is what it grew into 30 minutes later.
- Cite
snapshot_idin any downstream artefact (brief, ticket, dashboard) so the analysis is reproducible if the narrative shifts. - Build against structural fields first — given the alpha status of the prose, automation that depends on
weight,lead_terms,domain_countis more durable today than automation that depends onsummarywording.
Errors specific to narrative
Full error envelope: Errors.
What’s not narrative
Narrative is the state-of-the-story view at a snapshot. Reports are deeper, scheduled, editorial. Alerts are the events that compose it.
Last reviewed: 2026-05-19. API version 1.2.8.
summary and sub_narratives[].title wording in alpha — actively shaped by design-partner feedback.