provider_update_group

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

Annotations already declare readOnlyHint=false, destructiveHint=false, and idempotentHint=true, so the safety profile is covered. The description adds nothing beyond that: it does not say whether PUT replaces the whole group spec (clearing omitted fields), what happens to role/source entity refs not supplied, or what permissions are required. The only extra content is the raw endpoint path, which merely restates the title annotation.

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 single substantive sentence is duplicated verbatim, wasting space with zero added information, and the trailing PUT path is redundant with the title annotation. Brevity here reflects under-specification rather than efficiency.

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 tool with a nested group-spec body, idempotent semantics, and no output schema, the description omits the details that matter most: full-replacement vs. partial-update behavior, treatment of omitted optional fields, and required authorization. Given the complexity of the nested body, this is inadequate.

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 100%, so groupUrn and the nested body fields are already documented in the schema, which sets the baseline at 3. The description says nothing about which body fields are meaningful to modify or which are read-only representations, so it adds no value over 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?

The description names a specific verb and resource ("Modify the details of the specified group"), which is clear enough for an agent to know this is an update operation on a group identified by URN. It does not distinguish itself from siblings such as provider_update_user, provider_modify_user_groups, or provider_create_group, 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?

There is no guidance on when to use this versus provider_create_group, provider_delete_group, provider_get_group, or provider_modify_user_groups. No prerequisites, no exclusions, no mention that the group must already exist or that the caller needs provider-level rights.

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