Inquiry Signals
Platform signals computed for an inquiry (such as fraud scores and behavioral indicators) can be exposed on the external Inquiry API and webhooks. This allows you to consume risk and trust signals directly from inquiry responses without needing to make separate API calls.
Requires enablement
Signals on the Inquiry API are gated behind a feature flag at the organization level. Contact your CSM or Persona support to enable this feature for your organization.
How it works
The GET /api/v1/inquiries/:id response includes a signals array in data.attributes. When the feature is enabled and signals are available, the array is populated:
When the feature is not enabled, signals will be an empty array:
Signal object fields
Each signal in the array contains the following fields:
Unit conventions
Programmatic interfaces (the Inquiry API, webhooks, and event payloads) standardize numerical measurements on base SI units without attached unit strings so machine systems and rules engines can compare and evaluate values directly:
- Distance and geospatial measurements: All distance signals (such as
geolocation-to-residency-deltaor distance between IP and device coordinates) are emitted as raw floating-point numbers in meters (). - Dashboard display vs. raw payload: In the Persona Dashboard (e.g., on the Inquiry details page), distances exceeding 1,000 meters are automatically formatted in kilometers (e.g.,
8,357.8 km) for human readability. In API responses and webhook/event payloads, however, the underlying raw value is always delivered in meters (e.g.,8357841.68). - Rule and trigger evaluations: When configuring automated workflow triggers, webhook handlers, or downstream business logic based on distance signals, always evaluate thresholds in meters (for example, evaluate
50000rather than50for a 50 km threshold).
Which signals appear
Only signals that pass visibility checks for your organization are included in the response. Specifically:
- The signal must be assigned to the inquiry’s template version.
- The signal’s visibility rules must be satisfied (based on product features and environment restrictions).
The set of visible signals may vary across inquiry templates and template versions. If no signals are visible for a given inquiry, the signals array will be empty.
Webhook exposure
Since signals is an inline attribute on the inquiry object, it automatically appears in all inquiry webhook event payloads (e.g. inquiry.completed, inquiry.approved, inquiry.declined). No additional webhook configuration is required. When the feature is not enabled, signals will be an empty array in the webhook payload.
For example, an inquiry.approved webhook event payload will include signals in the inquiry attributes:
See the Webhooks Overview for more information on configuring and consuming webhooks.

