API tools for workflow builders.
Use one NisaStack API key to generate PDFs, call APIs, store files, and keep automation utility work out of brittle one-off scripts.
Utilities
HTML to PDF
/api/utilities/html-to-pdf
Utilities
JSON to PDF
/api/utilities/json-to-pdf
Utilities
HTTP Request
/api/utilities/http-request
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Pick the utility. Send the request. Get the result.
Every tool follows the same platform rules: bearer auth, JSON payloads, predictable responses, action usage tracking, and documentation you can hand to a workflow builder.
Utilities
HTML to PDF
Load a saved HTML template with [[var:invoice-template-html]] and saved CSS with [[var:invoice-template-css]] to generate clean PDF files for reports, quotes, certificates, and workflow-generated documents.
/api/utilities/html-to-pdf
Open
Utilities
JSON to PDF
Load a saved HTML template with [[var:invoice-template-html]], then send structured JSON into it and get a finished PDF back without maintaining rendering code.
/api/utilities/json-to-pdf
Open
Utilities
HTTP Request
Call external APIs from workflows with one consistent request shape, response format, and operational surface.
/api/utilities/http-request
Open
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