Complete a specific Singular task
Choose a practical procedure for authentication, clients, provider keys, the web app, or per-call payments.
How-to guidesAvailability: Informational
Choose by what you need to do
Four paths through the documentation
TutorialsLearnLearn Singular by completing a working request from key claim through streaming.How-to guidesSolveComplete a specific integration, key-management, application, or per-call payment task.ExplanationUnderstandUnderstand model identity, automatic routing, fallbacks, and role-gated platform boundaries.ReferenceReferenceFind exact request fields, compatibility, routing, streams, billing, and limitations.
Choose the outcome you need
How-to guides assume you already understand the basic Singular request. Each guide focuses on a concrete result and states any compatibility or deployment boundary that changes the procedure.
| Goal | Guide |
|---|---|
| Send credentials safely and manage key lifecycle | Authenticate requests |
| Configure an OpenAI SDK or compatible application | Connect a client |
| Attach an upstream provider credential | Attach provider keys |
| Use threads, comparisons, Spaces, and sharing | Use the chat app |
| Pay for an eligible call with x402 | x402 per-call payments |
| Fulfill an advertised MPP charge | MPP charge payments |
Before following a guide
Use the live catalog for model IDs and the live 402 response for enabled payment methods. A guide describes the shipped contract; it does not turn a deployment-gated rail into an enabled service.
In this section
How-to guides
01Authenticate requestsSend a Singular API key safely, manage its lifecycle, and handle the accountless payment exception.02Connect a clientConnect tools that let you set an OpenAI-compatible base URL and use Chat Completions.03Attach provider keysAttach or replace provider credentials without exposing them to the browser and choose when Singular may use them.04Use the chat appStart routed threads, compare models, organize work in Spaces, share results, and manage account controls.05x402Understand Singular's x402 v2 handshake, request binding, response headers, and current release gates.06MPPUse the HTTP Payment challenge flow and understand the Singular-specific USDC methods and chain requirements.