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

Goes well beyond the annotations by disclosing a critical gating behavior: "No change occurs until a human approves the exact request in Settings > MCP and execute_approved_action is called," plus that admins configure approval requirements. This is genuinely additive context for a destructive (destructiveHint=true) mutation. It stops short of describing what exactly changes or reversibility.

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?

Front-loads the org/context sentence and the core "Edit a purchase template," with approval boilerplate after. Reasonably sized but contains a slightly mismatched lead-in ("purchase_lists records") and generic approval phrasing that could be tightened.

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?

Output schema exists, so return shape is covered, and the approval workflow is explained. But for a destructive nested-object mutation with 0% param coverage, the description leaves the editable fields and target identification undocumented, so it is only adequate overall.

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% and the description explains nothing about the two parameters — neither templateId (UUID of the target template) nor the nested data object (editable name/description). The schema structure is partially self-evident, but on a low-coverage schema the description is expected to compensate and it does not.

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: "Edit a purchase template." An agent can tell this is the update operation on a purchase template. However, it never differentiates from nearby siblings such as create_purchase_template, apply_purchase_template, or update_purchase_item; the opening "working with RetailHardHat purchase_lists records" also introduces naming that doesn't cleanly map to "purchase template."

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 "Use this when working with RetailHardHat purchase_lists records in the connected organization" gives a usage context, but there are no exclusions and no explicit alternatives (create vs. apply vs. update, or which template fields are reasoned for editing). Usage is implied rather than directed.

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