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

Annotations already declare the mutation profile (readOnlyHint=false, destructiveHint=false, openWorldHint=false), so the description's added job is context: it does contribute that code is 'validated' before acceptance. It omits the concurrency model implied by version/patch_base and doesn't clarify whether revert/revert_default overwrite existing user edits despite destructiveHint=false.

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?

Very short and front-loaded, with no wasted prose, which is good. But the second clause is a bare reference fragment and the density leaves required parameters and modes entirely unexplained — this is under-specification rather than true conciseness.

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 8 params, 0% schema coverage, and no output schema, the description should carry far more: idempotency expectations, version/patch_base conflict handling, and mode semantics. The guides_get pointer offloads some of this but an agent cannot call correctly from the description alone.

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?

Eight parameters with 0% schema description coverage, and the description explains none of them. Critically, the required idempotency_key and page_key are undocumented, and the five-valued mode enum (full/patch/create/revert/revert_default) has no stated meaning even though mode selection drives the whole call.

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 specific verbs and resource: 'Create/edit/restore validated OpenUI dashboards', which tells an agent this is the write/restore counterpart to layouts_get and layouts_delete. The naming mismatch between 'layouts' and 'dashboards' is resolved by the trailing 'dashboards/openui' pointer, though it takes a second read.

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 'guides_get dashboards/openui' pointer gives a place to look for authoritative usage, which is genuinely useful. But it never says when to prefer this over layouts_get or layouts_delete, nor which of the five modes an agent should pick for a given intent — guidance is implied rather than stated.

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