Pre-call data fetch

Fetch a small JSON context object before a call so the opening prompt can use current information.

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Prerequisites

• A service that accepts a POST request and returns JSON.
• A managed credential if the service requires authentication.

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Configure the request

1. Open Start Call and enable Pre-Call Data Fetch.
2. Enter the service URL and choose optional authentication.
3. Return an initial_context object from the service.
4. Reference returned values in the greeting or opening prompt with template variables.
5. Test a success response, an error response, and a timeout before publishing.

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Request and variable mapping

Klatt sends a call-inbound event with the caller and called numbers. The JSON object under initial_context is merged into the call context and becomes available to templates.

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Constraints and failure states

The request has a 10-second timeout. URL validation, network errors, non-success responses, invalid JSON, an invalid shape, or unsupported dynamic-variable fields produce no pre-call variables; the call does not receive guessed values.

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Protect your data

Use HTTPS and a credential scoped only to the lookup. Do not return secrets or an entire customer record; return the few fields needed by the opening turn.

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Related

• Start Call node
• Template variables
• HTTP tool