# ServiceChannel > ServiceChannel is a facilities-management platform that lets multi-location brands automate work orders, manage service providers, track assets, and process invoices at scale. The developer platform exposes a large REST API (Service Automation v3) plus the Fixxbook provider-directory API, secured with OAuth2. ## APIs - [Service Automation API (v3)](https://developer.servicechannel.com/swagger/ui/index?version=3): 742 operations across work orders, work requests, assets, locations, invoices, proposals, providers, and refrigerant tracking. Production host https://api.servicechannel.com/v3 (sandbox https://sb2api.servicechannel.com/v3). - [Fixxbook API (bearer.v1)](https://developer.servicechannel.com/swagger/ui/index?version=3): provider-directory API. Production host https://fixxbook.servicechannel.com/api. ## Authentication - OAuth2 authorization-code grant. Authorize https://login.servicechannel.com/oauth/authorize, token https://login.servicechannel.com/oauth/token. Bearer access token on every request. ## Specs - [Service Automation OpenAPI](https://raw.githubusercontent.com/api-evangelist/servicechannel/refs/heads/main/openapi/servicechannel-service-automation-openapi-original.json) - [Fixxbook OpenAPI](https://raw.githubusercontent.com/api-evangelist/servicechannel/refs/heads/main/openapi/servicechannel-fixxbook-openapi-original.json) ## Docs - [Developer Portal](https://developer.servicechannel.com/) - [Getting Started](https://developer.servicechannel.com/basics/introduction/getting-started) - [Response & Error Codes](https://developer.servicechannel.com/basics/general/response-codes/) - [Changelog / News](https://developer.servicechannel.com/news) - [Status Page](https://status.servicechannel.com) ## Conventions - Pagination via page / pageSize query parameters. - Rate limiting: HTTP 429 with Retry-After header. - Errors: ErrorResponse envelope with ErrorCodes[], ErrorCode, ErrorMessage and ~257 documented internal codes. - Webhooks: HTTP notification subscriptions with a signing key.