Microsoft Bcquality Assets Al Appsource Review

AL AppSource review

Source: microsoft/skills/review/al-appsource-review.md

> Bundled consumption note. This extension packages BCQuality as VS Code chat skills and chat instructions under assets/generated/microsoft-bcquality-assets. Do not probe an external clone, skills/entry.md, skills/read.md, skills/do.md, or knowledge-index.json when using this bundled copy. Treat this SKILL.md plus the bundled BCQuality instruction files whose Source: paths match the active domain as the packaged knowledge surface. This note overrides upstream clone-oriented path references preserved below for provenance.

AL AppSource review

Reviews AL source and app metadata changes against the appsource knowledge domain in BCQuality and emits a findings report. This is a leaf action skill: it invokes no sub-skills. It is one of the skills composed by al-code-review.

An orchestrator invokes this skill with either a pr-diff (the standard PR-review entry point) or a file-path (single-file review). AppSource findings are narrow by design, they apply when the diff touches AppSourceCop configuration, AL object or extension-member names, or AppSource-facing app.json metadata. The skill returns not-applicable when none of those apply.

Source

Read the BCQuality knowledge index once, the knowledge-index.json BCQuality builds at the root of the knowledge checkout (Entry's preparation step regenerates it over the live, already-filtered clone, see skills/entry.md). It lists every article that survived layer and allow/deny filtering and carries, per article, its path, layer, domain, frontmatter dimensions, keywords, title, and a one-line description hint, exactly the fields Relevance and Worklist consume. Take the index entries whose domain is appsource as this skill's candidate set across every enabled Microsoft, community, and custom layer; do not open the individual article files at this step. Open an article's full body only once it enters the Worklist below, so a review reads the index plus the handful of worklisted articles instead of every file under */knowledge/appsource/**.

Relevance

Apply the frontmatter matching rules defined in READ (Frontmatter matching semantics) against the task context:

• bc-version, the target BC version from the PR branch's app.json or the orchestrator-supplied version. If unavailable, the dimension is unknown.
• technologies, [al].
• countries, the countries declared in the consuming app's app.json. Default to the orchestrator's configured context; if absent, unknown.
• application-area, the union of application areas declared by the changed objects. Pass the actual set; do not substitute [all]. If the area cannot be determined from the changes, the dimension is unknown.

Discard files that are not applicable. Retain conditionally applicable files (any dimension unknown) only when the orchestrator's configuration permits them; findings derived from those files MUST have confidence no higher than medium, AND the finding's message MUST name the dimension or dimensions that were unknown.

Worklist

Narrow the relevant files to the subset that applies to the changes under review. For each relevant file, compute overlap against:

• The changed files and AL object types, especially app.json, AppSourceCop.json, namespace declarations, permission-set objects, new objects, and table/page/report extensions that add fields, keys, controls, or actions to base objects.
• The changed object and member names, weighted toward prefix/suffix consistency with mandatoryAffixes or mandatoryPrefix, plus AppSource-facing help metadata.
• Tokens extracted from the diff that relate to AppSource (AppSourceCop, mandatoryAffixes, mandatoryPrefix, AS0011, prefix, suffix, namespace, using, permissionset, Assignable, Permissions, SUPER, tableextension, pageextension, reportextension, field, key, control, action, app.json, help, ContextSensitiveHelpPage, Copilot, https).

A file enters the candidate worklist when its keywords intersect the extracted tokens or its topic (derived from the index entry's path, title, and description) matches a changed object type. Read an article's full file, its ## Best Practice / ## Anti Pattern bodies, only after it makes the worklist; candidate selection uses the index alone. When the diff contains no AppSource-related source or metadata changes by any of the above signals, return outcome: "not-applicable" without evaluating files.

The following targeted checks cover every current appsource article across the Microsoft and community layers. Treat each as a candidate-selection cue: when the signal appears in changed code, add the named article to the worklist and evaluate it in Action.

• Select exactly one naming-collision owner. When no namespace declaration is present, a new/renamed object lacks the reserved prefix/suffix, or an extension object adds an unaffixed member to a base object, object-affixes-prevent-collisions.
• For BC23 or later, use two-level-namespace-replaces-object-affix-not-extension-member-affix instead when the changed source actually declares or changes a namespace and relies on it as the owned-object affix alternative, but has fewer than two levels or incorrectly applies that exception to members on another publisher's object. Never worklist this article for an unaffixed source file with no namespace declaration.
• The app has no assignable permission set covering its setup and usage paths, omits visible object/tabledata grants, or requires SUPER for normal operation, permission-sets-cover-setup-and-usage-without-super. Require repository-level app context; one isolated permission-set object cannot prove complete coverage.

Before emitting an affix finding, compare every owned object name and every member added to another publisher's object against the configured mandatoryAffixes/mandatoryPrefix. A matching prefix or suffix is compliant. Do not flag an ABC-prefixed object or an ABC-suffixed extension member when ABC is the configured affix.

• For BC v27 or later, app.json adds or changes the help URL to a path deeper than two levels, or a changed Copilot/context-sensitive help arrangement would ground the app under an overly broad truncated parent, keep-copilot-help-url-to-two-path-levels.

Once the candidate worklist is known, resolve layer-precedence conflicts per READ. Drop lower-precedence files whose normative guidance (## Best Practice or ## Anti Pattern) directly contradicts a higher-precedence candidate, and record each dropped file in suppressed with reason: "layer-precedence". Files that would have been candidates but are hidden because their layer is disabled in consumer configuration are recorded with reason: "configuration". Files that never became candidates are NOT recorded in suppressed.

When the post-conflict worklist is empty because no applicable AppSource knowledge exists, or because configuration suppressed every candidate, emit outcome: "no-knowledge". When the worklist is empty because no applicable AppSource knowledge matched the changes, emit outcome: "completed" with an empty findings array.

Action

For each worklist entry, evaluate the diff against the file's ## Best Practice and ## Anti Pattern sections. Emit findings as follows:

• When the diff contains a clear match for an Anti Pattern, emit a finding with severity major or blocker, a message summarizing the anti-pattern, location pointing to the offending line or range, and a references entry pointing to the knowledge file. Use blocker only when the knowledge file states the change violates an AppSource submission requirement; otherwise the ceiling is major.
• When the diff contains code that contradicts a Best Practice without being a full anti-pattern, emit minor with the same reference shape.
• Applicability alone is not a finding. Emit info only for a concrete, non-actionable observation the article explicitly defines; otherwise emit nothing when no violation is present.

Set confidence to:

• high when the detection is based on an unambiguous pattern match (affix configuration/name or URL path depth).
• medium when detection relies on heuristics or when any frontmatter dimension was unknown.
• low when the finding is an advisory derived only from applicability.

After evaluating each worklist entry, also consider whether the diff exhibits an AppSource defect the agent recognises from its general AL knowledge that no knowledge file in the worklist covers. Such candidates are agent findings within this skill's domain, emit them with references: [], an id slug prefixed with agent:, confidence capped at medium, severity capped at minor (agent findings are advisory and non-gating), and a message that is self-contained (describing both the issue and a concrete recommendation, since there is no knowledge-file footer for the consumer to fall back on). Hold every candidate to the precision bar in skills/do.md (Agent findings): emit only a concrete, material AppSource defect a knowledgeable BC reviewer would agree is wrong, steelman it first and drop anything stylistic, speculative, dependent on code outside the diff, or merely a valid alternative; when in doubt, omit. The scope is strictly AppSource; defects outside this domain belong to other leaves and MUST NOT be emitted here. Before emitting, check the worklist for a knowledge file that matches the candidate, if one exists, upgrade the candidate to a knowledge-backed finding instead. See skills/do.md for the full contract.

For every emitted finding, decide whether the fix is mechanical. A fix is mechanical when it is small, local, and unambiguous from the diff context (for example: add the configured affix to one object or extension member, or replace a deep help URL with a known two-level canonical URL). For mechanical findings, emit findings[].suggested-code with the literal replacement for the source lines indicated by location. The payload must be a verbatim replacement, no diff markers, no fences, no commentary, that the consumer can render as a one-click suggestion. When a .good.al companion exists and the diff context matches the .bad.al shape, adapt the .good.al replacement into suggested-code.

Omit suggested-code only when the appropriate fix depends on context the skill cannot determine, when multiple defensible replacements exist, or when the fix spans non-contiguous code. If a finding is mechanical-looking but you omit suggested-code, set findings[].suggested-code-omission-reason to a short explanation. See skills/do.md for the full contract.

Outcome selection:

• completed, the skill evaluated every worklist item.
• no-knowledge, no applicable AppSource knowledge survived filtering.
• not-applicable, the diff touches no AppSource source, analyzer configuration, or app-metadata surface.
• partial, a budget was hit before the worklist was exhausted.
• failed, an unrecoverable error occurred.

Output

Output conforms to the DO output contract. Every finding this skill emits MUST set findings[].domain to "AppSource". A populated example:

{
  "skill": { "id": "al-appsource-review", "version": 1 },
  "outcome": "completed",
  "summary": {
    "counts": { "blocker": 0, "major": 1, "minor": 0, "info": 0 },
    "coverage": { "worklist-size": 1, "items-evaluated": 1 }
  },
  "findings": [
    {
      "id": "microsoft/knowledge/appsource/object-affixes-prevent-collisions.md",
      "severity": "major",
      "message": "The tableextension adds an unaffixed Loyalty Points field to Customer, so it violates the configured AppSource affix and can collide with another extension.",
      "location": {
        "file": "src/CustomerExt.TableExt.al",
        "line": 8
      },
      "references": [
        { "path": "microsoft/knowledge/appsource/object-affixes-prevent-collisions.md" }
      ],
      "confidence": "high",
      "domain": "AppSource",
      "suggested-code": "field(50100; \"Loyalty Points ABC\"; Integer)"
    }
  ],
  "suppressed": []
}

The empty-corpus case produces:

{
  "skill": { "id": "al-appsource-review", "version": 1 },
  "outcome": "no-knowledge",
  "summary": {
    "counts": { "blocker": 0, "major": 0, "minor": 0, "info": 0 },
    "coverage": { "worklist-size": 0, "items-evaluated": 0 }
  },
  "findings": [],
  "suppressed": []
}

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: Louage
• Source: Louage/frw-agentic-coding
• License: MIT

Install and usage instructions live in the source repository linked above.