azure-hosted-copilot-sdk
Build, deploy, and modify GitHub Copilot SDK apps on Azure. MANDATORY when codebase contains @github/copilot-sdk or CopilotClient in package.json. PREFER OVER azure-prepare when copilot-sdk markers detected. WHEN: copilot SDK, @github/copilot-sdk, copilot-powered app, build copilot app, prepare copilot app, add feature to copilot app, modify copilot app, BYOM, bring your own model, CopilotClient, createSession, sendAndWait, azd init copilot. DO NOT USE FOR: deploying already-prepared...
npx skills add https://github.com/microsoft/azure-skills --skill azure-hosted-copilot-sdkGitHub Copilot SDK on Azure
Codebase Detection — MANDATORY FIRST CHECK
⚠️ CRITICAL: This check MUST run before ANY other skill (azure-prepare, azure-deploy, etc.) when an existing codebase is present.
Detection procedure (run IMMEDIATELY for any build/modify/add-feature/prepare prompt):
- Read
package.jsonin the workspace root (and any*/package.jsonone level deep) - Check if
@github/copilot-sdkorcopilot-sdkappears inname,dependencies, ordevDependencies - If NOT found in package.json, scan
.tsand.jsfiles forCopilotClientorcreateSession - If ANY marker is found → invoke this skill as the entry point. Do not route directly to azure-prepare or azure-deploy — this skill orchestrates them as sub-skills.
| Marker | Where to check |
|---|---|
@github/copilot-sdk | package.json dependencies or devDependencies |
copilot-sdk | package.json name or dependencies |
CopilotClient | Source files (.ts, .js) |
createSession + sendAndWait | Source files (.ts, .js) |
Generic prompts that MUST trigger this skill when markers are detected:
| Prompt pattern (no "copilot" keyword) | Why this skill |
|---|---|
| "Build this app" / "Prepare this app for Azure" | Codebase contains @github/copilot-sdk - needs SDK-aware scaffolding |
| "Add a new feature to this app" | Requires SDK-aware implementation patterns |
| "Update this app" / "Modify this app" | Must preserve SDK integration patterns |
⚠️ Warning: ANY build, modify, add-feature, or prepare prompt targeting an existing codebase MUST route to this skill when codebase contains
@github/copilot-sdk, even if the prompt does not mention "copilot". This skill then orchestrates azure-prepare and azure-deploy as sub-skills.
⚠️ Yield to azure-deploy: When the codebase already has
.azure/deployment-plan.mdand the user wants to deploy (not modify or add features), route to azure-deploy instead. This skill handles preparation; azure-deploy handles execution.
Step 1: Route
| User wants | Action |
|---|---|
| Build new (empty project) | Step 2A (scaffold) |
| Add new SDK service to existing repo | Step 2B (scaffold alongside) |
| Deploy existing SDK app to Azure | Step 2C (add infra to existing SDK app) |
| Modify/add features to existing SDK app | Use codebase context + SDK references to implement |
| Add SDK to existing app code | Integrate SDK |
| Use Azure/own model | Step 3 (BYOM config) |
Step 2A: Scaffold New (Greenfield)
azd init --template azure-samples/copilot-sdk-service
Template includes API (Express/TS) + Web UI (React/Vite) + infra (Bicep) + Dockerfiles + token scripts — do NOT recreate. See SDK ref.
Step 2B: Add SDK Service to Existing Repo
User has existing code and wants a new Copilot SDK service alongside it. Scaffold template to a temp dir, copy the API service + infra into the user's repo, adapt azure.yaml to include both existing and new services. See deploy existing ref.
Step 2C: Deploy Existing SDK App
User already has a working Copilot SDK app and needs Azure infra. See deploy existing ref.
Step 3: Model Configuration
Three model paths (layers on top of 2A/2B):
| Path | Config |
|---|---|
| GitHub default | No model param — SDK picks default |
| GitHub specific | model: "<name>" — use listModels() to discover |
| Azure BYOM | model + provider with bearerToken via DefaultAzureCredential |
⚠️ BYOM Auth — MANDATORY: Azure BYOM configurations MUST use
DefaultAzureCredential(local dev) orManagedIdentityCredential(production) to obtain abearerToken. The ONLY supported auth pattern isbearerTokenin the provider config. See auth-best-practices.md for the credential pattern and model config ref for the full BYOM code example.
See model config ref.
Step 4: Deploy
Invoke azure-prepare (skip its Step 0 routing — scaffolding is done) → azure-validate → azure-deploy in order.
Rules
- Read
AGENTS.mdin user's repo before changes - Docker required (
docker info) - BYOM auth: ONLY
bearerTokenviaDefaultAzureCredentialorManagedIdentityCredential— no other auth pattern is supported