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Sunil Sattiraju
c7babcfa68
* Add foundry-hosted-agent-copilotkit skill (development-focused) Reworked from PR #2090 feedback: drops all scaffolding/sample-template content and focuses on ongoing development with CopilotKit + AG-UI + Azure AI Foundry hosted agents — adding/gating tools, human-in-the-loop approvals, generative UI and shared state, event-stream debugging, pre-1.0 dependency upgrades, and the hosted-agent deploy loop. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Add HITL code examples to foundry-hosted-agent-copilotkit skill Address review feedback: the .NET approval paragraph was prose-only. Add a .NET snippet from the official Step04_HumanInLoop sample and correct the type/behavior (ToolApprovalRequestContent; convert—not remove—the request_approval call/result). Also add live-verified Python snippets for hosted-agent approval-forwarding (#6652) and the previous_response_id #6851 guard. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * Potential fix for pull request finding Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com> * Potential fix for pull request finding Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com> Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
42 lines
4.3 KiB
Markdown
42 lines
4.3 KiB
Markdown
# The hosted-agent development and deploy loop
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Foundry hosted agents are defined by `agent.yaml` (identity: `kind: hosted`, model, protocols, environment variables, resources — schema at microsoft.github.io/AgentSchema/), optionally an `agent.manifest.yaml` (parameterized template), and `azure.yaml` (azd provisioning + service config). `${VAR}` in these files is an azd environment variable; `{{ param }}` is an init-time template parameter.
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## Inner loop: develop against the REAL agent locally
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There is no mock. The `azure.ai.agents` azd extension runs the actual hosted agent locally:
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1. `az login` into the tenant that owns the Foundry project (see the 403 trap below).
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2. `azd ai agent run` — starts the agent locally (default port 8088) against the provisioned project.
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3. `azd ai agent invoke --local "<message>"` — one-shot test (`-p responses|invocations` selects protocol, `-f payload.json` for structured input).
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4. Point the rest of the stack (AG-UI endpoint or bridge) at the local agent URL via whatever environment variable the codebase uses for direct/local mode, and exercise features through the real UI.
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Inner-loop discipline:
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- **Restart the agent between independent verification passes** if it seeds in-memory data — every approve/reject mutates shared state, so a second test run against a dirty process passes or fails for the wrong reason.
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- A stale agent process holding the port produces a confusing hypercorn "Address already in use" traceback on the next `azd ai agent run` — kill it first.
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- A freshly started agent can 404 with `DeploymentNotFound` on the first request even though the model deployment exists (warm-up flake) — retry once before investigating.
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## Outer loop: deploy an update
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1. `azd deploy` (or `azd up` for provision + deploy). Code-deploy (ZIP) vs container-deploy is selected by fields in `agent.yaml`; container builds default to remote ACR builds — no local Docker needed.
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2. **Each deploy creates a new agent version.** `azd ai agent show` confirms what's live. Clients pinned to a specific version won't see the update; clients using "latest" will.
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3. Verify the deployed agent behaviorally: send a read query AND confirm a consequential action still pauses for approval. Deployment success output proves packaging worked, nothing more.
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## Deploy gotchas
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| Gotcha | Detail |
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| --- | --- |
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| `azd provision` alone deploys a placeholder | Provision creates infrastructure only; without a deploy step you get a hello-world agent. Use `azd up` or follow provision with `azd deploy` |
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| Base images must come from MCR | `az acr build` pulling from Docker Hub anonymously hits `toomanyrequests` rate limits. Use `mcr.microsoft.com/...` base images |
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| Shared code missing from the image | If agent code imports modules outside the agent directory, the docker build context in `azure.yaml` must reach them — and azd versions have differed in whether they accept a parent-directory `project:`/context path (a 1.27.0-era regression rejected `..`). Test packaging after azd upgrades |
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| Hosted container env | `FOUNDRY_PROJECT_ENDPOINT` and `APPLICATIONINSIGHTS_CONNECTION_STRING` are injected automatically in hosted containers; don't hardcode them |
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| Compute idles out | Hosted agent compute deprovisions after ~15 minutes idle; first request after idle is slow — not a bug |
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| History duplication (Responses protocol) | The platform stores conversation history; if the agent's own chat client also stores (`store=True`), turns duplicate. Set the client/host options to not store |
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| Bridge/front-door scaling | Any service holding per-thread response-id or conversation caches in memory must run a single replica or externalize the cache |
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| Tenant-mismatch 403 | `Microsoft.MachineLearningServices/workspaces/agents/action` denied despite correct RBAC usually means the az CLI's active subscription/tenant isn't the project's. Fix with `az account set` / `az login --tenant`; no code change |
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## Production frontend wiring
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Deploy the AG-UI endpoint (Architecture A/C service, or rely on the hosted invocations endpoint for B) where the CopilotKit runtime can reach it server-side; set the runtime's agent URL env var accordingly. Keep auth keyless (Entra) with the `https://ai.azure.com/.default` audience. The browser talks only to the CopilotKit runtime route — never expose Foundry endpoints or credentials to the client.
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