Register an Entra application

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full behavioral disclosure burden. It clearly states that the tool mutates a live environment, requires confirm: true, performs a dry run otherwise, and runs through the active pac auth profile. This is solid behavioral context, though it slightly repeats the confirm requirement.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Three sentences, front-loaded with the core purpose, and no filler. The only minor weakness is repeating 'requires confirm: true' in two consecutive sentences, which is slightly redundant but not harmful.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a mutating admin tool with no annotations and no output schema, the description covers the essential operational facts: what it does, that it mutates, how to actually apply the change (confirm: true), and that a dry run happens otherwise. Combined with fully documented parameters, an agent has what it needs to invoke the tool correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents all six parameters. The description adds context about the confirm flag's dry-run behavior and the active profile, but it does not materially expand on parameter meaning beyond what the schema provides. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource: 'Register an Entra application with the tenant so it can be used by Power Platform.' This is distinct from the sibling cs_admin_unregister_application and clearly names the underlying command 'pac admin application register'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description makes the use case clear — registering an Entra application for Power Platform — and notes the important confirm flag requirement. It does not explicitly name alternatives or when not to use it, but the register/unregister sibling pair and the title make the primary usage obvious.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.