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

Annotations already declare readOnly, idempotent, non-destructive, so the safety profile is covered. The description adds genuine context beyond that: it states credentials and provider secrets are excluded from the response, and warns that capability flags do not constitute approval — a real interpretation caveat. The latter sentence is terse and somewhat opaque, which keeps it from a 5.

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 short sentences with the core scope front-loaded and no filler. The final sentence ("Capability flags are not approval") is compact to the point of being cryptic, so it is efficient but not optimally clear.

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?

An output schema exists, so return-value detail is unnecessary, and annotations cover safety semantics. What is still missing is any notion of where the workspace_id comes from and how this listing relates to the surrounding social publishing workflow, which matters given the very large sibling set.

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?

Only one parameter and schema description coverage is 0%, so the schema says nothing about workspace_id beyond type and length. The description's reference to "the selected workspace" gives partial scoping meaning but also risks implying an implicit selection rather than an explicit id argument, which could mislead an agent about how to supply it.

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?

The description gives a specific verb and resource ("List ... destination choices") and narrows scope to the selected workspace's currently authorized entries. What a "destination" actually is (a social account/page target) is left implicit, and no sibling list tool is named for contrast, so it stops short of a 5.

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?

Usage is only implied: the phrase "currently authorized destination choices" hints this is a discovery step, presumably before drafting or scheduling. There is no explicit when-to-use, no prerequisite (e.g., must resolve workspace_id first), and no mention of alternatives such as get_social_publication or the social_read_* siblings.

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