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

With readOnlyHint already declaring the safety profile, the description adds substantial context beyond annotations: auth/identity requirement, per-activity audience trimming at the service layer, exclusion of non-interoperable organizations, and the meaning of canManage as real management capability. This is rich behavioral 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?

Dense but front-loaded: auth/scoping first, then filters, pagination, and alternative routing. Every clause carries signal, though the packing of many semicolon-separated clauses makes it slightly heavy to parse.

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?

No output schema exists, yet the description covers return-shaping (per-audience trimming, exclusion of unauthorized orgs) and the canManage field. For a 5-param tool at 0% schema coverage it is nearly complete; only the limit parameter's behavior is unaddressed.

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 0%, so the description must carry parameter meaning. It explains organizationId (filter one authorized org), category (enumerates current/history/archived/pending and the mixed-list default), and cursor (pass through verbatim, restart from page one on alliance/filter change). limit and allianceId semantics (beyond being the pivot for 'changing alliance') are left to the schema.

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+resource: aggregates subordinate organization activities under an alliance, with scope (only those with open activities authorization). It explicitly distinguishes from siblings by naming list_organization_space_activities for the alliance's own/featured activities and get_signup_activity for signup details.

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?

Explicit preconditions (login required, must be registered alliance identity) and clear alternative routing: use list_organization_space_activities with the alliance organizationId for the alliance's own/featured activities. Rules out organizations that don't open interoperability, so an agent knows when this returns nothing.

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