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docs: technical design spec for unifying Foundry config in azure.yaml#8590

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docs: technical design spec for unifying Foundry config in azure.yaml#8590
huimiu wants to merge 11 commits into
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hui/unify-azure-yaml

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@huimiu

@huimiu huimiu commented Jun 10, 2026

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Summary

  • Add technical design spec for unifying Foundry agent configuration in azure.yaml at docs/specs/unify-azure-yaml/spec.md
  • Add design-spec workflow skill at .github/skills/design-spec/SKILL.md
  • Docs only, no product code changes

Details

Design spec (docs/specs/unify-azure-yaml/spec.md)

The spec is the engineering counterpart to the product brief. It covers two areas the brief does not address:

  • End to end experience: command flows for azd ai agent init, provision, deploy, up, and azd down; a Foundry service next to a normal service via uses:; connecting to an existing project via endpoint:; migration from host: azure.ai.agent and separate agent.yaml / agent.manifest.yaml files; partial deploy failure and safe re-run behavior.
  • Technical design: config binding through AdditionalProperties and gRPC, wiring host: microsoft.foundry to a new service target, JSON Schema composition at the service level, $ref file includes and overlay overrides, ${VAR} vs ${{...}} templating, service target lifecycle with per-agent fan-out, init rework, state reconciliation, sibling-extension schema ownership, and telemetry and errors.

Also includes a consolidated Open questions section covering provision-experience dependencies for PM confirmation alongside design questions specific to this work.

design-spec skill (.github/skills/design-spec/SKILL.md)

A reusable workflow skill that encodes the full process used to produce the spec above. Covers: clarifying inputs, reading repo conventions, researching the PM brief and related issues, exploring relevant code, writing the spec, self-review checklist, cspell, commit/push, and opening a PR with the correct ## Summary / ## Details format.

Closes #7962 (partial, spec milestone)

…yaml

Engineering design that backs the unified azure.yaml product brief. Covers the end to end command experience and the technical design (schema composition, config binding, the microsoft.foundry service target, ref includes, templating, init rework, reconciliation), plus a provision dependency callout and new open questions.

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Pull request overview

Adds an engineering technical design spec documenting the proposed unified azure.yaml shape and lifecycle for Foundry projects/agents, including schema composition, config binding, $ref includes, templating, lifecycle fan-out, migration/deprecation, and open questions. This lives under docs/specs/ and introduces no product code changes.

Changes:

  • Add a new design spec at docs/specs/unify-azure-yaml/spec.md covering end-to-end CLI flows and detailed technical design.
  • Document proposed schema composition for host: microsoft.foundry and extension wiring/rollout considerations.
  • Define $ref include/overlay behavior, templating coexistence (${VAR} vs ${{...}}), and reconciliation/idempotency approach.

Comment thread docs/specs/unify-azure-yaml/spec.md Outdated
Comment thread docs/specs/unify-azure-yaml/spec.md Outdated
Comment thread docs/specs/unify-azure-yaml/spec.md
Comment thread docs/specs/unify-azure-yaml/spec.md Outdated
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github-actions Bot commented Jun 10, 2026

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📋 Prioritization Note

Thanks for the contribution! The linked issue isn't in the current milestone yet.
Review may take a bit longer — reach out to @rajeshkamal5050 or @kristenwomack if you'd like to discuss prioritization.

@huimiu huimiu requested a review from danieljurek as a code owner June 10, 2026 05:48
@huimiu huimiu force-pushed the hui/unify-azure-yaml branch from e1dc707 to f38e2d4 Compare June 10, 2026 05:51
@huimiu huimiu removed the request for review from danieljurek June 10, 2026 05:52
huimiu added 9 commits June 10, 2026 14:11
Align $ref path handling with FileRef.json (accept absolute paths and URLs), document path rebasing and instruction/prompt file loading, model agent-level tools, scope deploy-mode validation to hosted agents, order routine reconciliation after agents, add a sibling-extension schema-ownership section (Option A), and merge Parts 3 and 4 into a single flat Open questions section. Trim the summary to deltas on the brief.
Remove the built-in Bicep, idempotency, and per-agent CLI items from the open questions list, since the brief raises each with a recommended option (opt-in in-memory Bicep, Bicep-like reconciliation semantics, and 3a per-agent build). Fold the #8349/#8350 references into the 2.8 reconciliation section and note where the brief leaves instructions-format and routines open.
John's brief already raises skill instructions format (open question 5) and routines ownership and triggers (open question 6). The instructions item also contradicted section 2.4, which already decides both inline and file forms. Remove both echoes; open questions now list only items this design adds.
FileRef.json states absolute paths and URLs are accepted and that sibling properties act as overlay overrides, and the brief recommends Option A (azure.ai.agents owns schema and reconciliation). That settles ref ownership, overlay rules, and absolute/remote paths, so remove both from open questions and fold the accepted-paths decision into section 2.4. Open questions now list only items the brief leaves open.
Issue 8587's preferred fix is deploy-time reconciliation of toolboxes and connections, which the design already does (folded into 2.8). Issue 8165's stated minimum, reusing an existing account, is the endpoint design (folded into 1.4). Split-file validation is already decided in 2.4. Remove all three from open questions, leaving only items with no settled direction: agent versioning (8066), gRPC config size, and composition surface naming (8049).
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Unify Foundry agent configuration in azure.yaml

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