# Sign In Enterprise

> Sign In Enterprise (formerly Traction Guest, now part of Sign In Solutions) is an enterprise visitor management system (VMS) used by security-conscious organizations across aerospace and defense, government, manufacturing, pharmaceuticals, and technology. Its REST API — "Guest Connect" / the Sign In Solutions VMS API — lets developers retrieve and modify visitor and employee sign-in data to extend workflows: hosts, invites, sign-ins, registrations, locations, capacities, parking, group visits, watchlists, email templates, and audit logs. REST over JSON, OAuth 2.0 / OpenID Connect scoped access, idempotent writes via an Idempotency-Key header.

## APIs
- [Sign In Solutions VMS API — developer portal](https://developers.signinenterprise.com/): REST API reference (ReDoc). Base URL https://us.tractionguest.com/api/v3
- [Developer & API overview](https://signinsolutions.com/developer-api): what the API does and its specifications

## Specs
- [OpenAPI 3.0.2 (Sign In Solutions VMS API v0.21.0)](https://raw.githubusercontent.com/tractionguest/guest-api/master/openapi.yml)

## Authentication
- OAuth 2.0 / OpenID Connect bearer tokens, fine-grained resource scopes
- [OpenID Connect discovery](https://us.tractionguest.com/.well-known/openid-configuration)
- Authorization: https://us.tractionguest.com/oauth/authorize — Token: https://us.tractionguest.com/oauth/token

## SDKs
- [TypeScript](https://github.com/tractionguest/guest-typescript-sdk)
- [Python](https://github.com/tractionguest/guest-python-sdk)
- [Swift](https://github.com/tractionguest/guest-swift-sdk)
- [Objective-C](https://github.com/tractionguest/guest-objc-sdk)
- [Java / Android](https://github.com/tractionguest/guest-android-sdk)
- [Dart](https://github.com/tractionguest/guest-dart-sdk)

## Docs
- [Integrations](https://signinsolutions.com/integrations): Access Control, Calendar, Communications, Directory/SSO, ERP, WiFi partners
- [Pricing](https://signinsolutions.com/pricing)
- [Help center](https://help.signinsolutions.com/)
- [Blog](https://signinsolutions.com/blog)
- [Compliance hub](https://signinsolutions.com/compliance-hub)
- [Trust center](https://trust.signinsolutions.com/): SOC 2, ISO 27001, CSA STAR, Cyber Essentials, GDPR, CCPA
- [Privacy](https://signinsolutions.com/privacy)
- [Terms and conditions](https://signinsolutions.com/terms-and-conditions)