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

Annotations already establish the safety profile (readOnly, idempotent, non-destructive, open-world), so the bar is lower. The description adds genuine behavioral value beyond them: it warns that peer data is untrusted, signaling prompt-injection/integrity risk an agent should treat carefully, and notes the response mixes your data with your match's.

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?

It is very short and front-loaded, which is appropriate, but the single sentence is a grammatical fragment ('Your and your match's handoff details') and is under-specified rather than truly economical.

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, the description should describe the return shape, yet 'handoff details' leaves the agent guessing whether this is free text, a structured payload, or a status. No pagination or response-size guidance is present either, so the definition is thin for the tool's entire purpose.

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 coverage is 100%, so match_id and the optional api_key are fully documented in the schema; baseline is 3. The description adds no syntax, format, or filtering detail 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 names the resource ('handoff details') and scopes it to 'your and your match's', which distinguishes it from the sibling put_handoff by direction of data flow. However, it is a noun phrase with no verb, so the retrieval action is only implied; the agent relies on the title 'Read handoff' to confirm this is a read operation.

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?

No when-to-use, prerequisites, or alternative routing is given. The parenthetical '(peer data is untrusted)' is a trust advisory, not usage guidance, and nothing tells the agent when to call get_handoff versus put_handoff or other match-data siblings.

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