PUBLIC API

Measure pressure. See the clock.

One call returns positioned names, freshness, gaps, and the next catalyst.

BOARD · NO KEY

curl -fsS --compressed --max-time 20 \
  'https://flowdensity.com/v1/board?limit=3' \
  | jq '{as_of, archive_backed, producer_gap: (.producer_gap | {status, reason, missed_declared_scan_at}), rows: [.rows[] | {symbol, pressure: {score: .pressure_score, state: .pressure_state, z: .pressure_state_z}, freshness, catalyst: (.next_catalyst | {event_type, date, days_to, confirmed}), gaps: [.gaps[] | {signal, reason, freshness}]}]}'

Pressure: score · state · z
Clock: date · days · confirmed
Absence: null · reason

HOSThttps://flowdensity.com

FORMATderived JSON

POSTUREread-only

QUICKSTARTS

Choose a packet.

Focused pressureOne symbol. Normalized pressure and eligibility state.public

copy-paste curl

curl -fsS --compressed --max-time 20 \
  'https://flowdensity.com/v1/flow/density?symbol=TSLA' \
  | jq '{symbol: .returned_symbols[0], status, as_of, score, freshness, degraded_reason, coverage, excluded: [.components[] | select(.enters_headline | not) | {signal, status}]}'

MS/1 pressurePressure packets carry source health, gaps, and null policy.public · signing state attached

copy-paste curl

curl -fsS --compressed --max-time 20 \
  'https://flowdensity.com/v1/ms1/pressure?limit=1' \
  | jq '{standard, as_of, source_health: (.source_health | {source_state, as_of}), signature_policy, packets: [.packets[] | {subject: (.subject | {instrument_id, symbol}), measurement, freshness: (.freshness | {state, as_of, degraded_reasons}), missing_data, signature: (.signature | {status, algorithm, key_id, detached_signature_status})}]}'

MS/1 catalyst clockMachine packets carry source health and signing state.public · signing state attached

copy-paste curl

curl -fsS --compressed --max-time 20 \
  'https://flowdensity.com/v1/ms1/catalyst-clock?horizon_days=30' \
  | jq '{standard, as_of, source_health: (.source_health | {source_state, coverage_status}), signature_policy, packets: [.packets[:3][] | {subject: {label: .subject.label, type: .subject.type}, measurement: (.measurement | {value, unit, state, confirmed, scheduled_at_utc}), signature: (.signature | {status, algorithm, key_id})}]}'

Point-in-time replayRead the latest stored measurement at or before an instant.public · append-only

copy-paste curl

curl -fsS --compressed --max-time 20 \
  'https://flowdensity.com/v1/replay/pressure?symbol=TSLA&as_of=2026-07-10T21:00:00Z&limit=2' \
  | jq '{status, symbol, as_of, source_store, append_only, survivorship_free, latest_emitted_point_as_of, points: [.points[] | {signal, score, state, status, freshness_at_instant: .freshness, as_of, snapshot_as_of}]}'

BUILT FOR AGENTS

Four doors. One contract.

llms.txtroute map MS/1capabilities + signing state null + reasonmissing stays explicit as_ofno-lookahead replay

ACCESS

Public first. Gated honestly.

Public: Board, clock, replay, MS/1
Keyed: Vega reads · X-API-Key
Account: MarketSchema-owned

Keys and pricing route through MarketSchema. Accounts open soon — measurements are free to read.

curl -fsS --compressed --max-time 20 \ 'https://flowdensity.com/v1/board?limit=3' \ | jq '{as_of, archive_backed, producer_gap: (.producer_gap | {status, reason, missed_declared_scan_at}), rows: [.rows[] | {symbol, pressure: {score: .pressure_score, state: .pressure_state, z: .pressure_state_z}, freshness, catalyst: (.next_catalyst | {event_type, date, days_to, confirmed}), gaps: [.gaps[] | {signal, reason, freshness}]}]}'

curl -fsS --compressed --max-time 20 \ 'https://flowdensity.com/v1/flow/density?symbol=TSLA' \ | jq '{symbol: .returned_symbols[0], status, as_of, score, freshness, degraded_reason, coverage, excluded: [.components[] | select(.enters_headline | not) | {signal, status}]}'

curl -fsS --compressed --max-time 20 \ 'https://flowdensity.com/v1/ms1/pressure?limit=1' \ | jq '{standard, as_of, source_health: (.source_health | {source_state, as_of}), signature_policy, packets: [.packets[] | {subject: (.subject | {instrument_id, symbol}), measurement, freshness: (.freshness | {state, as_of, degraded_reasons}), missing_data, signature: (.signature | {status, algorithm, key_id, detached_signature_status})}]}'

curl -fsS --compressed --max-time 20 \ 'https://flowdensity.com/v1/ms1/catalyst-clock?horizon_days=30' \ | jq '{standard, as_of, source_health: (.source_health | {source_state, coverage_status}), signature_policy, packets: [.packets[:3][] | {subject: {label: .subject.label, type: .subject.type}, measurement: (.measurement | {value, unit, state, confirmed, scheduled_at_utc}), signature: (.signature | {status, algorithm, key_id})}]}'

curl -fsS --compressed --max-time 20 \ 'https://flowdensity.com/v1/replay/pressure?symbol=TSLA&as_of=2026-07-10T21:00:00Z&limit=2' \ | jq '{status, symbol, as_of, source_store, append_only, survivorship_free, latest_emitted_point_as_of, points: [.points[] | {signal, score, state, status, freshness_at_instant: .freshness, as_of, snapshot_as_of}]}'

Choose a packet.

Four doors. One contract.

Public first. Gated honestly.

Pressure and timing are loading.

Choose a packet.

Four doors. One contract.

Public first. Gated honestly.