Skip to content
StartupBuilder
by startups.studio
by Startups.Studio
Code
Changelog
APIGrowth

Exposure routes

Every Exposure Verb as an api.sb route, with its inputs, result, refusals and an example.

Reference for Exposure.

NounSystemRun by
ExposureExperimentsAnalyst

Exposure.create

Creates an Exposure. Verb page.

Text
POST /{namespace}/exposures

Body, as JSON: the inputs. Emits Exposure.created.

Inputs

InputTypeRequiredDescription
unitstringrequiredWhat was randomized: a Visitor, a Customer, a request, or an agent choice.
optionsjsonrequiredEvery Variant that was possible at that moment.
propensitynumberrequiredThe probability the assigned Variant had, kept for later estimates.
atdatetimerequiredWhen the unit met the Variant.
triggeredbooleanTrue when the unit reached the point the Variant changes.
variantVariantThe Variant the Flag assigned to this unit.

Returns

OutputTypeRequiredDescription
exposureExposurerequiredThe Exposure.

Refuses when

CheckErrorFixThen call
The key is valid, but its scopes do not allow this operation.forbiddenUse a key whose scopes cover the operation, or ask an owner of the namespace to grant them.None.

Example

Terminal
curl -X POST https://api.sb/leaseline.app/exposures \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"unit":"Example unit","options":{},"propensity":1,"at":"2026-10-22T12:00:00Z"}'
JSON
{
  "api": "https://api.sb/leaseline.app",
  "exposure": {
    "$id": "https://api.sb/leaseline.app/exposures/exposure_Ua2Xw4KsJB",
    "$type": "Exposure",
    "unit": "Example unit",
    "options": {},
    "propensity": 1,
    "at": "2026-10-22T12:00:00Z"
  },
  "action": {
    "$id": "https://api.sb/leaseline.app/actions/act_br07HsG8MG",
    "operation": "Exposure.create",
    "status": "done"
  },
  "links": {
    "self": "https://api.sb/leaseline.app/actions/act_br07HsG8MG"
  }
}

Exposure.get

Returns one Exposure by id. Verb page.

Text
GET /{namespace}/exposures/{id}

Path: id. Query: the other inputs. Reads only: it emits no Event.

Inputs

InputTypeRequiredDescription
idstringrequiredThe id of the Exposure.
atstringA time or Version name: the record as it stood then. Unset: as it stands now.

Returns

OutputTypeRequiredDescription
exposureExposurerequiredThe Exposure.

Refuses when

CheckErrorFixThen call
The key is valid, but its scopes do not allow this operation.forbiddenUse a key whose scopes cover the operation, or ask an owner of the namespace to grant them.None.

Example

Terminal
curl https://api.sb/leaseline.app/exposures/exposure_Ua2Xw4KsJB \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY"
JSON
{
  "api": "https://api.sb/leaseline.app",
  "$type": "Exposure",
  "$id": "https://api.sb/leaseline.app/exposures/exposure_Ua2Xw4KsJB",
  "exposure": {
    "$id": "https://api.sb/leaseline.app/exposures/exposure_Ua2Xw4KsJB",
    "$type": "Exposure",
    "unit": "Example unit",
    "options": {},
    "propensity": 1,
    "at": "2026-10-22T12:00:00Z"
  },
  "links": {
    "self": "https://api.sb/leaseline.app/exposures/exposure_Ua2Xw4KsJB",
    "up": "https://api.sb/leaseline.app/exposures"
  }
}

Exposure.list

Returns Exposures, newest first, one page at a time. Verb page.

Text
GET /{namespace}/exposures

Query: the inputs. Reads only: it emits no Event.

Inputs

InputTypeRequiredDescription
limitintegerAt most this many records, up to 100. The default is 20.
afterstringThe cursor from the previous page.
wherestringA filter over the properties, such as paidAt = null and total.amount > 500.
sortstringProperties to sort by, comma-separated; a leading minus sorts descending.
totalbooleanTrue adds the match count as meta.total, exact up to 10,000 matches and estimated above.
facetsstringProperties to count by value, comma-separated, returned as meta.facets.
fieldsstringProperties to return on each record, comma-separated; $id and $type always return.
includestringRelated records to embed in place of their URLs, comma-separated.
depthintegerHow many levels of related records to embed. The default is 1.
qstringWords to match across the text properties, ranked by relevance.
matchstringRanks the search by words, or meaning; words is the default.

Returns

OutputTypeRequiredDescription
exposureslist of ExposurerequiredOne page of Exposures.

Refuses when

CheckErrorFixThen call
The key is valid, but its scopes do not allow this operation.forbiddenUse a key whose scopes cover the operation, or ask an owner of the namespace to grant them.None.

Example

Terminal
curl "https://api.sb/leaseline.app/exposures?limit=20" \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY"
JSON
{
  "api": "https://api.sb/leaseline.app",
  "$type": "Exposure",
  "exposures": [
    {
      "$id": "https://api.sb/leaseline.app/exposures/exposure_Ua2Xw4KsJB",
      "$type": "Exposure",
      "unit": "Example unit",
      "options": {},
      "propensity": 1,
      "at": "2026-10-22T12:00:00Z"
    }
  ],
  "meta": {
    "limit": 20,
    "after": "exposure_Ua2Xw4KsJB"
  },
  "links": {
    "self": "https://api.sb/leaseline.app/exposures?limit=20",
    "next": "https://api.sb/leaseline.app/exposures?after=exposure_Ua2Xw4KsJB"
  }
}

conclude, start

Previous

Funnel

Next