cipp_list_trusted_blocked_senders

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

With no annotations, the description carries the burden and does disclose two meaningful traits: the operation is read-only, and an empty list is a normal not-an-error outcome. It omits permission/auth requirements, but for a read-only list tool this is solid disclosure.

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?

Two tightly written sentences; the scope-defining verb and resource lead, and the behavioral caveat follows. Zero filler.

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 two-param, read-only list tool with no output schema and no annotations, the description covers purpose and the key expectation-setting detail (empty is normal). It would be fully complete if it noted any auth precondition or return shape, but nothing essential is missing.

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 both upn and tenantFilter (including the 'allTenants' convention) are already documented in the schema. The description adds no parameter detail beyond what the structured fields provide, making the baseline 3 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 (list) and resource (safe-sender/trusted and blocked-sender entries) scoped to a mailbox's Exchange Online junk email settings. No sibling tool covers this resource, so an agent can confidently distinguish it from cipp_list_mailboxes or cipp_list_mailbox_permissions.

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 establishes context (mailbox junk email settings) and clarifies the empty-result case, but gives no explicit when-to-use guidance or named alternatives. Usage is implied by the resource rather than stated.

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