Remote signature requests

Clicksign, Assinafy, ZapSign, DocuSeal, and Documenso are remote workflow providers. Their APIs create documents, recipients, envelopes, links, and notifications in an upstream system. They do not mutate your local PDF/XML bytes through the Signatures service.

Provider rule

• Use local Signatures when SignatureKit signs document bytes directly.
• Use provider request functions when an upstream platform owns the signing ceremony.
• Keep provider tokens in Redacted; HTTP errors must never serialize secrets.