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

Annotations declare readOnlyHint=false, destructiveHint=false, openWorldHint=false, so the agent knows this is a non-destructive mutation. The description's 'Run ... preparation' is consistent with that but adds no further behavioral context: no idempotency, no side effects, no auth/permission needs, no statement of what state changes. With annotations present, the bar is lower, but this adds essentially nothing on top of them.

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?

A single short sentence with no filler and the action front-loaded, so it is not verbose. However, its brevity comes from under-specification rather than efficiency — the one sentence carries no usable 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?

An output schema exists, so return values need not be explained, but for a setup/preparation mutation with an opaque required-format parameter and a dense sibling set, the description leaves the agent unable to decide whether or when to call it. It is not complete enough to invoke confidently.

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% for the single connection_context parameter, and the description never mentions it. The agent is left with only a regex pattern and no explanation of what context token format or source should supply it.

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 restates the tool name almost verbatim: 'ensure baseline templates' becomes 'baseline-template preparation'. It does not explain what 'baseline templates' are, what 'preparation' produces, or how this differs from siblings like setup_readiness_check, templates_create, or templates_list. The only addition is the vague qualifier 'AdsAgent-managed'.

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?

No when-to-use guidance, no ordering relative to the setup_* onboarding flow (setup_begin_facebook_connect, setup_check_*_connect, setup_readiness_check), and no indication of whether it must run before or after other setup steps. Nothing routes the agent to or away from this tool.

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