Sign API
Sign capability comes from ComplianceClient envelope, signing, H5 URL, provider request, and void methods.
Current status
This page is intentionally constrained to facts found in @acosmi/sdk-ts@2.0.1 and the local docs audit.
Boundary
The docs center does not claim language SDKs, webhook signing contracts, or OpenAPI coverage that has not been copied into this repository and verified by checks.