Api user groups update

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

Annotations already declare readOnlyHint=false, idempotentHint=true, destructiveHint=false and openWorldHint=true, so the incremental behavioral bar is low, yet the description adds nothing: it doesn't say whether the update is full-replace, what happens to omitted fields, whether permissions/roles are required, or whether the operation is reversible. The phrase 'viewed or edited' also muddies the read/write distinction the annotations establish.

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?

It is a single short sentence with no filler, so it is appropriately sized and front-loaded. The problem is under-specification rather than verbosity, and the one clause it does contain is boilerplate rather than useful information.

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 mutation endpoint with no output schema, an opaque anyOf 'body' parameter, and a large family of near-identical user_groups siblings, the description supplies nothing an agent needs: no payload shape, no replace-vs-merge semantics, no return information, no prerequisite permissions.

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% across 2 parameters, and the free-form 'body' object gives the agent no idea what fields are updatable (name, users, roles, permissions). The description contributes zero parameter meaning, so it neither compensates for the coverage gap nor explains that 'id' identifies the group being replaced versus patched.

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 'API endpoint that allows user groups to be viewed or edited' only restates the resource name and adds a generic REST boilerplate clause. It never says 'update' specifically, and does not distinguish this tool from the many siblings that read the same resource (user_groups_retrieve, user_groups_list, user_groups_object_retrieve) or that also mutate it (user_groups_partial_update, user_groups_create, user_groups_destroy).

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 no statement of when to use this tool rather than user_groups_partial_update, user_groups_create, or the retrieve/list variants. The only hint, 'viewed or edited', actually blurs the choice by implying this call can also read, leaving the agent to infer from the tool name alone.

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