API capability pack for bounded Dropbox Sign API v3 operations against https://api.hellosign.com/v3. Enroll a Dropbox Sign API key HTTP Basic Auth connection or OAuth bearer connection named dropbox-sign with account, template, team, bulk-send-job, and signature-request access. The pack reads account metadata, templates, teams, signature requests, signer status, and bulk-send-job status for contract lifecycle review, onboarding paperwork, sales handoff, renewal tracking, and signature evidence briefs. It bundles a scheduled signature-request digest, AI-assisted request and template readiness briefs, and approval-gated workflows for sending a request from an existing template, reminding one signer, updating one signer, and canceling one incomplete request. Writes are limited to one target request at a time; cancel is irreversible and uses an always-approval destructive gate. The pack intentionally excludes file uploads, binary downloads, file URL/data URI exports, embedded signing or editing URLs, template create/delete/update, template file mutation, team and account administration writes, bulk-send execution, report creation, fax APIs, OAuth token endpoints, completed-request access removal, and arbitrary Dropbox Sign API passthrough.