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

The note that boolean filters (starred/archived) are unreliable is genuine behavioral disclosure that annotations do not and cannot carry, which is valuable. However, those filters do not exist in the schema (additionalProperties: false, 9 params, none named starred/archived), so the warning is partly moot and risks confusing the agent. Nothing is said about the 100-result cap or what happens beyond it.

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 tight sentences with the purpose front-loaded and the caveat following immediately. There is minor redundancy between the title echo 'Get All Templates' and 'Retrieve all email templates', but no filler.

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 no explanation, and the schema covers pagination parameters. Still missing is any mention of the silent 100-result ceiling that would tell an agent to paginate with skip, and the filter caveat references parameters that do not exist. Adequate but with a real gap for a list tool.

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 the schema already documents all nine parameters including defaults and the max limit. The description only restates a subset of filter names (folder, type, taskType, search, sortBy, sortType) and omits skip, limit, and workspace_id, adding no syntax or semantics beyond the schema. Baseline 3 is appropriate.

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: retrieve all email templates with optional filtering. An agent can distinguish this from get_template (single fetch), but the description never names that sibling to make the distinction explicit.

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?

Usage is only implied by 'retrieve all ... with optional filtering' and the list of supported filters. There is no explicit statement of when to use this versus get_template, nor any guidance on prerequisites or workspace scoping.

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