Signal

The Signal API scores a piece of content — text, audio, image, or video — against a set of fraud and scam categories and returns a verdict along with the best-matching categories. Use it to triage suspicious messages, voicemails, and media, and to explain why something looks fraudulent.

Signal ships with a built-in catalog of fraud patterns. Teams can extend or replace that catalog with their own custom categories built from example phrases.

Base URL

https://app.resemble.ai/api/v2

Send Content-Type: application/json for text and JSON bodies, and multipart/form-data for file uploads.

Access

Signal requires an account with Signal enabled. Requests from accounts without access return:

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{
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  "success": false,
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  "message": "Signal access is required"
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}

All calls are scoped to the authenticated user’s team automatically.

Verdicts

Every submission returns one of three verdicts:

The verdict is accompanied by the highest-scoring category, the runner-up categories, and the individual example phrases that matched — see Score Content for the full response shape.

Supported input

Provide either text or file in a request, not both. The media type is detected from the uploaded file’s MIME type, and can be overridden with media_type.

Endpoints