Update User Project Roles

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

The description goes beyond annotations by detailing the removal behavior ('Will remove any users associated with the role if they are not included'). Annotations indicate readOnlyHint=false and destructiveHint=false, but the description adds transparency about the side effect. This helps the agent understand the tool's impact.

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 four sentences long, concise, and includes essential information: purpose, behavior, required parameters, and endpoint. It is front-loaded with the main action. Minor repetition of 'Project records' could be streamlined, but overall efficient.

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?

The description covers the main behavior and return value ('returns the modified object on success'). However, it lacks details on error conditions, permissions, or the full response structure (no output schema). For a simple update tool, this is adequate but not exhaustive.

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 100%, and the description adds meaning by explaining the role of `user_ids` in removal behavior. It also lists required parameters concisely. This goes beyond the schema descriptions, which are basic.

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 clearly states the action: 'Set which Users are associated with a specific Project Role.' It also notes the effect of removing users not in the list, and the tool name and title align with this purpose. It distinguishes from siblings like 'add_role_to_project' and 'update_vendor_project_roles' by specifying the exact operation on user-project-role associations.

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 provides clear guidance on usage: it explains that users not included in `user_ids` will be removed, which is critical for correct invocation. However, it does not explicitly state when to use this tool over alternatives (e.g., for bulk setting vs. incremental updates), but the implied usage is clear.

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