# LegalOn Contract API

**Canonical:** https://apis.io/apis/legalon/contract-api/  
**Provider:** LegalOn — https://apis.io/providers/legalon/  
**Base URL:** https://api.legalontech.com  
**Documentation:** https://legalontech.jp/10843/

LegalOn Contract API is published by [LegalOn](https://apis.io/providers/legalon/) on the [APIs.io](https://apis.io/) network. Tagged areas include Contracts, Contract Management, Documents, and Legal. The published artifact set on APIs.io includes authentication docs.

REST API for the LegalOn contract platform. Documented capabilities cover contract file operations (upload, retrieve, update, delete), contract information management (register and update metadata such as counterparty name and contract type), linking related documents to a contract, and retrieving lists and details of registered contracts. Authentication is OAuth 2.0 using the client_credentials grant, scoped to workspaces where the caller holds the appropriate role. Announced publicly on 2026-07-13 as the second phase of LegalOn API connectivity; the API reference is not published on the open web.

## Machine-readable artifacts (5)

- **Authentication** — https://raw.githubusercontent.com/api-evangelist/legalon/refs/heads/main/authentication/legalon-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/legalon/refs/heads/main/conventions/legalon-conventions.yml
- **Announcement** — https://legalontech.jp/10843/
- **Announcement** — https://legalontech.jp/10478/
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/legalon/refs/heads/main/apis.yml

## Tags

Contracts, Contract Management, Documents, Legal

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/legalon/contract-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/legalon/.