feat(community/agents): add AL agent quality guidance

- add 20 agent knowledge rules with good and bad AL samples
- clarify setup dialog shape, temporary persistence, permissions, profiles, instructions, capability registration, and interface wiring
- add the community-owned AL agents review skill
- make review fixture discovery layer-aware with custom, community, and Microsoft precedence
- document layer-aware evaluation behavior
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Stefano Demiliani 2026-08-23 22:10:10 +02:00
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---
bc-version: [27..]
domain: agents
keywords: [agent-metadata-provider, iagentfactory, iagentmetadata, iagenttaskexecution, enumextension, implementation]
technologies: [al]
countries: [w1]
application-area: [all]
---
# Wire all three agent interfaces on the metadata provider
## Description
An AL agent type is registered by extending `Agent Metadata Provider`. The platform locates factory, metadata, and task-execution behaviour only through the `Implementation` property on that enum value. Omitting `IAgentFactory`, `IAgentMetadata`, or `IAgentTaskExecution` leaves create, UI identity, or task runs unbound. Models often ship a single codeunit and skip the enum wiring.
## Best Practice
On the enum value, set `Implementation` for all three interfaces, each pointing at a dedicated codeunit. Keep factory (create, defaults, first-time setup), metadata (setup page, summary, annotations), and task execution (message analysis, intervention suggestions) in separate objects.
See sample: `wire-all-three-agent-interfaces.good.al`.
## Anti Pattern
An `Agent Metadata Provider` value with no `Implementation`, only one interface mapped, or all three interfaces pointing at one catch-all codeunit that cannot satisfy the contracts. Detection signal: enumextension of `Agent Metadata Provider` whose value does not list `IAgentFactory`, `IAgentMetadata`, and `IAgentTaskExecution`.
See sample: `wire-all-three-agent-interfaces.bad.al`.
## See also
`register-copilot-capability-for-the-agent.md` covers the feature capability linked by the factory implementation.