Find a reference
Use this section to look up interface contracts, protocols and configuration fields. For system behavior and design constraints, see Concepts and principles. For your first use, follow the quick start. If you have not decided which interfaces to call, choose an application workflow first.
| What you need | Entry point |
|---|---|
| SDK connections, HTTP authentication, response formats and errors | SDK, HTTP and CLI conventions |
| Server or client configuration fields | Server configuration, client configuration |
| MCP tools, parameters and upload protocol | MCP tools and protocol; for client installation, see Connect an MCP client |
| Resources, files and retrieval interfaces | Resources, file system, content, retrieval |
| Sessions, memory and skills interfaces | Sessions, memory, skills |
| Administration, permissions and background state | Admin, ACL, background tasks, Observer |
| Consistency, isolation and processing completion | Architecture, transactions and recovery, multi-tenancy, queue state |
The sidebar groups interfaces by the objects they operate on. Task guides remain in Build Applications or Deploy & Operate and link to the relevant references. For configuration steps, see Configure models and services. For differences between integrations, see the capability comparison.