# One Open API v2 - Client

**Canonical:** https://apis.io/apis/sms-assist/one-open-api-v2-client/  
**Provider:** SMS Assist — https://apis.io/providers/sms-assist/  
**Base URL:** https://meshlive.lessen.com/one-graph-client/graphql  
**Documentation:** https://developers.lessen.com/docs/#/client/overview

One Open API v2 - Client is one of 2 APIs that [SMS Assist](https://apis.io/providers/sms-assist/) publishes on the [APIs.io](https://apis.io/) network. The published artifact set on APIs.io includes API documentation.

GraphQL API for clients (property owners and managers) to create and track reactive and recurrent work orders, residents, locations, service requests, invoices, proposals, Turn/Reno projects, ratings, and attachments across the Lessen One Platform. Authentication is token-based: obtain a bearer access_token from the /one-graph-client/token endpoint via HTTP Basic Auth.

## Machine-readable artifacts (5)

- **GraphQL** — https://meshlive.lessen.com/one-graph-client/graphql
- **Documentation** — https://developers.lessen.com/docs/#/client/overview
- **Sandbox** — https://meshstage.lessen.com/one-graph-client/graphql
- **Console** — https://meshstage.lessen.com/one-graph-client/ui/graphiql
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/sms-assist/refs/heads/main/apis.yml

## Other SMS Assist APIs (1)

- [One Open API v2 - Vendor](https://apis.io/apis/sms-assist/one-open-api-v2-vendor/)

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/sms-assist/one-open-api-v2-client/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/sms-assist/.