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

Annotations already establish that this is a non-read-only, non-idempotent, open-world operation. The description adds meaningful behavioral context beyond annotations: approval is required, omitting it yields a fresh quote, and the original key and payer are preserved.

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?

The description is short and front-loads the core purpose. The procedural sentences are useful, though the reference to 'approval' is slightly confusing because there is no approval parameter in the schema.

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 four-parameter mutation tool with no output schema, the description covers the key operational flow: quote first, then provide currency, budget, and quote_id, while preserving the original key and payer. It still omits return behavior and error cases, so it is not fully complete.

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 all four parameters are already documented in the input schema. The description reinforces the quote flow and budget/currency confirmation but does not add parameter syntax or constraints beyond what the schema already provides.

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 gives a specific verb and resource: 'Resume a paused API-key recipe or workflow.' That clearly distinguishes resuming from siblings like get_recipe_run or run_my_recipe, though it does not explicitly name those alternatives.

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?

It provides clear procedural guidance: omit approval to get a fresh quote, then confirm currency, max_usd, and quote_id. It does not explicitly state when not to use this tool versus related tools like run_my_recipe or get_recipe_run, so it falls short of a full when/when-not/alternatives statement.

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