API tiers: Public, Full, Top

Three levels of the API: no key for grants, events, search and stats; a key for leads and CRM; a top key for Deep Intelligence.

Public: grants, events, search and stats, bearer token optional. Full: bearer token required; leads with enrichment, approach strategies, contacts, pipeline runs, search queries and action history. Top: Deep Intelligence endpoints, provisioned by a superadmin only. Some endpoints are tier-aware and widen their payload with the key: companies return the scores and a rationale summary publicly, and add the dossier expansion and evidence bundle on full and top keys.