# Dropbox Sign

**Canonical:** https://apis.io/providers/dropbox-sign/  
**Website:** https://sign.dropbox.com  
**APIs profiled:** 6

Dropbox Sign (formerly HelloSign) is an eSignature platform that lets developers and businesses embed legally binding electronic signature workflows into their applications and websites. The product supports embedded signing and requesting, reusable templates, custom signer fields, branded signing flows, audit trails, and tamper-proof document delivery. The Dropbox Sign API is documented with an official OpenAPI specification and authenticated via HTTP Basic Auth with an API key or OAuth 2.0 Bearer tokens.

## Kin Score — 35.5 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 35.5).

| Facet | Score |
|---|---|
| Discoverability | 72.2 |
| Contract Quality | 64.5 |
| Governance | 11.4 |
| Contract Governance | 11.4 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 31.0 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

## Agent readiness — 27.4 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | derived |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (6)

- **Dropbox Sign Events and Callbacks API** — Outbound event / callback surface for Dropbox Sign. The platform POSTs JSON event payloads (wrapped in a `multipart/form-data` `json` field) to a subscriber-configured URL whene...
- **Dropbox Sign Account API** — The Account API from Dropbox Sign — 3 operation(s) for account.
- **Dropbox Sign API App API** — The API App API from Dropbox Sign — 3 operation(s) for api app.
- **Dropbox Sign Bulk Send Job API** — The Bulk Send Job API from Dropbox Sign — 2 operation(s) for bulk send job.
- **Dropbox Sign Embedded API** — The Embedded API from Dropbox Sign — 2 operation(s) for embedded.
- **Dropbox Sign Fax API** — The Fax API from Dropbox Sign — 2 operation(s) for fax.

## Agentic access (1)

- **Dropbox Sign Agentic Access** — 15 operations · 8 acting

## Security (3)

- **Dropbox Sign Authentication** — http/oauth2 · 2 schemes
- **Dropbox Sign Domain Security** — TLSv1.3 · HSTS · DMARC
- **Dropbox Sign Trust Center** — SOC 2, ISO 27001, ISO 27017, ISO 27018, PCI DSS, HIPAA, GDPR, CSA STAR

## Tags

E-Signature, Electronic Signature, Document Signing, Workflow-Automation, Documents

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/dropbox-sign/). Scores are computed from the provider's own public artifacts under a published rubric.