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

Annotations already declare readOnly/idempotent/non-destructive, but the description adds genuinely new behavioral context: the required 'prepare' scope, that the call is free, and the conceptual warning that a stored receipt is separate from removal evidence. What's missing is any note on failure modes when the packet is not owned or not yet ready, which is why it is not a 5.

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?

Four sentences, each carrying distinct information and front-loaded with what is read before the scope/cost and the sibling routing. Slightly dense with two separate clarifications at the end, 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?

For a single-parameter read with no output schema, the description supplies the return contents (packet, fingerprint, stored receipt), the auth scope, the cost, and the boundaries against adjacent tools. Nothing an agent needs to invoke it correctly is absent.

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?

With a single parameter at 100% schema coverage, the schema already documents 'id' including its provenance link to prepare_takedown. The description adds no syntax, format, or edge-case detail (e.g. behavior on unknown/expired id) beyond what the schema states, so the baseline 3 applies.

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?

Starts with a specific verb+resource ('Read an owned prepared notice packet, fingerprint and any stored submission receipt'), enumerating exactly what comes back. It also explicitly distinguishes itself from the sibling mutation tools prepare_takedown and submit_takedown, so an agent can disambiguate without opening either schema.

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 description states both the negative boundary ('Does not prepare or send a notice') and the alternatives with their selecting conditions ('Use prepare_takedown to create a packet and submit_takedown for authorized delivery'). It leaves nothing to inference about when this read tool is the right pick.

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