# Notarize

**Canonical:** https://apis.io/providers/notarize/  
**Website:** https://www.proof.com/  
**APIs profiled:** 1

Notarize (rebranded as Proof) provides Remote Online Notarization (RON), eSignature, identity verification, and reusable digital credentials through the Notarize Network. Its REST API (api.proof.com) lets businesses create notarization, eSign, Identify, and real-estate/mortgage closing transactions, attach and template documents, invite signers, manage notaries, and receive V2 webhooks for every transaction and notary state change. Authentication is by API key or OAuth 2.0 client credentials, with a Fairfax test environment for end-to-end sandbox testing. Widely used across proptech, lending, title, and legal workflows.

## Kin Score — 40.8 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 40.8).

| Facet | Score |
|---|---|
| Discoverability | 87.0 |
| Contract Quality | 45.1 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 47.0 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

## Agent readiness — 33.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | derived |
| 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 (1)

- **Proof API (formerly Notarize)** — REST API for creating and managing notarization, eSign, Identify, and real-estate transactions, documents, signers, notaries, templates, and Webhooks V2 subscriptions.

## MCP servers (1)

- **Notarize MCP Server**

## Security (3)

- **Notarize Authentication** — apiKey/oauth2 · 2 schemes
- **Notarize Domain Security** — TLSv1.2 · HSTS · DNSSEC · DMARC
- **Notarize Trust Center** — SOC 2, ISO 27001, ISO 27017, ISO 27018, HIPAA, FedRAMP, GDPR

## Tags

Company, PropTech, Notarization, Remote Online Notarization, Identity Verification, E-Signature, Digital Credentials, Real-Estate, Mortgage, Legal Tech

---

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