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

Annotations already declare readOnlyHint=false, destructiveHint=true and idempotentHint=true, so the safety profile is covered structurally. The description reinforces this with partial-update semantics that explain why the call is idempotent, but it omits the important nuance that supplying 'filters' replaces the entire filter object (dropping unspecified criteria) — which is exactly what makes this tool 'destructive'.

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?

Two short sentences, both front-loaded with the operative information (what changes, and that unspecified fields are untouched). Nothing is padded or redundant.

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 3-parameter mutation with full schema descriptions, rich annotations and no output schema, the definition covers what an agent needs to call it correctly. The only real gap is the replace-vs-merge behavior of the nested 'filters' object and any error case for an invalid view_id.

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%, so every parameter already carries its own description ('New display name', 'Replacement filter criteria', 'ID of the saved view to update'), establishing the baseline of 3. The description adds the merge-vs-replace rule for omitted fields, which is genuinely useful, but it does not clarify the tension between a partial update of the outer object and a full replacement of the nested filters object.

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 and resource ('Update ... an existing saved view') and names the two mutable fields ('name and/or filters'), so an agent can distinguish it from create_saved_view, delete_saved_view and list_saved_views by name alone. It stops short of explicitly naming those siblings, which keeps it from 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?

The second sentence implies patch-style usage ('Only the fields you provide are changed'), which tells an agent it can send a subset of fields. However, it never says when to prefer this over delete_saved_view plus create_saved_view, nor does it state the prerequisite that view_id must reference an existing view.

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