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

Annotations already convey a non-destructive write (readOnlyHint=false, destructiveHint=false), and the description adds nothing beyond the word 'update'. It does not disclose whether the call replaces or merges an existing allocation, whether allocation_type gates which of hours/percentage is used, or whether date fields are validated. No contradiction with the annotations, but no behavioral context is added either.

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?

The description is a single sentence with no wasted words, which is efficient. But the brevity reflects under-specification rather than tight coverage of essential information, and nothing valuable is front-loaded beyond the generic action.

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?

With 6 parameters, only 1 documented, no enums, and no output schema, the definition leaves too much to inference. An agent cannot determine how to construct a valid request — which fields pair with which allocation_type, the date semantics, or whether partial updates are allowed — from this description.

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 coverage is only 17% — only allocation_type has any description — and the tool description compensates for none of the gap. The relationship between allocation_type, allocation_hours, and allocation_percentage, the meaning of start_date/end_date, and any mutual exclusivity of fields are left entirely unexplained, forcing the agent to guess.

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 sentence names a specific verb, resource, and object — updating a project team member's allocation — so the basic action is clear. However, it is nearly a restatement of the title 'Update team allocation' and adds no specifics that differentiate it from siblings dealing with allocations (projects_add_team_member, projects_remove_team_member, projects_get_team_allocation, resources_update_allocation).

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?

There is zero guidance on when to invoke this tool versus an allocation-related alternative such as resources_update_allocation, or how it relates to adding/removing team members. No context, prerequisites, exclusions, or alternative names are provided, so an agent must infer usage purely from the name.

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