niche_intelligence_query

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Niche (nicheangle.com) research and analysis: answer an analyst-shaped question over fresh-scanned sources and get an intelligence answer as the deliverable, not a single post. Use for: 'the 10 biggest developments in X this week', 'what's emerging before it goes mainstream', 'where is investment activity rising', 'find 3 non-obvious narratives to publish on LinkedIn'. The answer is the ranked slate plus engine-grounded narratives or patterns: every narrative cites real slate stories and is fact-verified by a second pass (no source, no narrative). This uses the same engine as the Niche web app, so both surfaces return the identical grounded answer; do not synthesize your own narratives over the slate, present these. Non-blocking: returns a `session_id` immediately (under 2s). Poll niche_session_state every ~3-5s. At status == cp1_awaiting_story the ranked slate (`stories[]`) is ready; present it right away. Synthesis runs concurrently and usually lands 20-90s after the slate (hard cap ~2 min); if you requested it, call niche_session_state(wait:30, wait_until:'synthesis') and repeat until `synthesis_pending == false` (usually 1-3 calls); don't give up early, you'll always get `synthesis[]` or a `synthesis_shortfall_note`. With synthesis:'none', `synthesis` stays null and `synthesis_pending` is false at cp1, so stop there. To turn a narrative into a post, pick its supporting story id and call niche_angle_propose; no new scan needed. BRAND: omit brand_id and a single/default brand binds automatically; on a MULTI-brand account you'll get `brand_choice_required` with `brand_options[]` (the query still runs). Ask the user which brand before drafting. Pass brand_id to bind one, or 'none' for unbranded.