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

Beyond the readOnlyHint and destructiveHint annotations, the description discloses real behavioral constraints: delivery stays unavailable until source evidence, redistribution authorization and a passing export receipt are bound, and it creates no token or raw storage URL. That tells an agent the call is a gate, not a fetch. It still doesn't say what the call returns when the entitlement is valid or invalid.

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?

Three sentences with no filler, but the first sentence is awkward ("Check an existing exact-county paid entitlement") and conflicts conceptually with the name, and the middle sentence packs dense compliance jargon. It is compact but not clearly front-loaded with what the agent gets back.

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?

With no output schema and zero parameter descriptions, the description must explain both inputs and the outcome shape, but it omits order_id entirely and never states the success/failure signal. The precondition narrative is good, but a two-required-parameter gate tool still leaves an agent guessing what to pass and what it receives.

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%, so the description carries the burden, yet it only hints at county_fips via "exact-county" and never mentions order_id or the five-digit FIPS pattern and accepted order_id characters. Half the required inputs are unexplained anywhere.

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 says it "checks an existing exact-county paid entitlement," which is a specific verb-plus-resource, but the tool name is redeem_download, so it is unclear whether the tool redeems or merely validates. It never says how this differs from neighbors such as gisdb_create_checkout or gisdb_download_sample_bundle.

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 only usage signal is the implicit prerequisite of an existing paid entitlement. There is no statement of when to call this versus gisdb_create_checkout or gisdb_download_sample_bundle, and no exclusion criteria or follow-up routing.

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