API Changelog

Chronological changes to the Undersign API. Each entry notes the change type and any migration impact.

Current documented API

The API reference documents the following capabilities:

• Create signature requests: required and optional configuration
• Create bulk requests (up to 100 per batch)
• Retrieve signature request status
• List templates and retrieve template details
• List categories
• Create, list and inspect public signing links
• Webhook configuration
• Quotas & credits

Change types used in this changelog: Added, Changed, Fixed, Deprecated, Removed, Breaking Change.

v1.1

• Changed: Base path /api/v1 → /api/v1.1. v1.1 replaces v1; no migration action is needed beyond using the new base path.

v1.0: 2026-09-17

• Added: Bulk request creation (POST /bulk-signature-requests).
• Added: Public signing links (POST /public-links, GET /public-links, GET /public-links/{guid}).
• Added: Quotas & Credits guide (credit model, monthly quota and storage limit codes).
• Changed: Create Signature Request pages merged into a single endpoint page with full optional-field coverage.
• Removed: Legacy X-API-KEY header requirement on Get Template Details (bearer token only).

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