generated: '2026-09-19'
method: derived
source: provider-published JSON Schemas - the extensions.bazaar.schema in each 402 challenge (x402/) and https://feed.scalpstream.com/schema (json-schema/) - plus the /preview parameter descriptions, 2026-09-19
summary: >-
  Five independent read models, one per service, with no cross-service references and no
  identifiers to join on - each response is a self-contained answer to one query. Derived only
  from schemas the provider serves; no field is inferred.
entities:
- name: RecallLookup
  service: RecallScout
  source: x402/scalpstream-com-recallscout-402-challenge.json#/extensions/bazaar/schema
  fields: [query, recalled, worst_severity, action, active_count, 'active[]', complete, 'sources_queried[]', 'sources_failed[]', disclaimer]
  relationships:
  - {type: has_many, target: Recall, via: active}
- name: Recall
  service: RecallScout
  fields: [id, source, product, firm, reason, hazard, remedy, severity, severity_basis, codes, date]
  note: source is one of FDA / NHTSA / CPSC; severity is normalised across the three with severity_basis stating why
- name: AirQualityAnswer
  service: AirScout
  source: x402/scalpstream-com-airscout-402-challenge.json#/extensions/bazaar/schema
  fields: [service, place, current, verdict, best_window, source, price_usd, disclaimer]
  relationships:
  - {type: has_one, target: CurrentAirQuality, via: current}
  - {type: has_one, target: CleanWindow, via: best_window}
- name: CurrentAirQuality
  service: AirScout
  note: nested object under current - US AQI and pollutant breakdown (shape per the bazaar schema)
- name: CleanWindow
  service: AirScout
  note: nested object under best_window - the contiguous clean window ahead for the requested duration
- name: CrossingRanking
  service: BorderScout
  source: x402/scalpstream-com-borderscout-402-challenge.json#/extensions/bazaar/schema
  fields: [service, place, 'crossings[]', source, price_usd, disclaimer]
  relationships:
  - {type: has_many, target: Crossing, via: crossings}
- name: Crossing
  service: BorderScout
  note: one US port of entry with drive + wait = all-in time per lane (shape per the bazaar schema)
- name: FuelAnswer
  service: FuelScout
  source: x402/scalpstream-com-fuelscout-402-challenge.json#/extensions/bazaar/schema
  fields: [service, country, grade, currency, resolution, average, 'stations[]', price_usd, disclaimer]
  relationships:
  - {type: has_many, target: Station, via: stations}
  note: resolution distinguishes station-level (ES/FR/IT) from regional-average (US) answers
- name: Station
  service: FuelScout
  note: one fuel station with price and distance; smart=1 adds a detour-aware ranking
- name: ResearchFeed
  service: ScalpStream Research
  source: json-schema/scalpstream-com-research-schema.json#/feeds/*/schema
  fields: [publication, as_of, pick_count, 'picks[]', receipt, operator_position_disclosure, disclaimer]
  publications: [scalpstream-options (/picks), scalpstream-dividends (/dividends), scalpstream-crypto (/crypto), scalpstream-yields (/yields)]
  relationships:
  - {type: has_many, target: Pick, via: picks}
  - {type: has_one, target: Receipt, via: receipt}
- name: Pick
  service: ScalpStream Research
  note: one ranked candidate; per-feed row shape in the /schema document, required[] lists the fields present on every row of the current scan
- name: Receipt
  service: ScalpStream Research
  note: payment/delivery receipt attached to each paid response
- name: Freshness
  service: ScalpStream Research
  source: /preview responses
  fields: [board_hash, payload_hash, market_session, rows]
  note: preview-only object; board_hash is also served as the weak ETag
identifiers:
  scheme: none published - responses carry no stable ids except recall ids from the upstream regulators (e.g. F-0123-2026 in the FDA example)