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

readOnlyHint=false lowers the bar, and the description adds real behavioral context: the access gate ('without the right code you see nothing') and the failure mode for wrong codes with a named error token (HANDOFF_GUESS_LOCKED, rate-limited). It stops short of describing whether the call changes any state despite readOnlyHint=false, or details of the rate limit.

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 front-loaded with the scoping constraint before the mechanics, and every clause carries information (scope, gating, code format, failure behavior). The long parenthetical and dense domain jargon ('Consumer Pulse copy', 'purpose limit') make it heavier than needed, but nothing is padding.

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 still signals what comes back (memos with labels and a purpose limit) and covers the access gate and error behavior for a 4-parameter gated tool. It leaves 'purpose limit' and any pagination or ordering undefined, but nothing essential to invoking the tool correctly is missing.

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 75%; matter_id, session_id, and actor_token are documented in the schema, while handoff_code has no schema description. The description compensates for that gap by explaining the code's origin and format ('the short code like PULSE-ABCD-EFGH-IJKL shown to the visitor when the first AI's memo was accepted'), which adds meaning beyond the bare string type.

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 conveys that this surfaces memos handed to the caller under a handoff_code, along with their labels and purpose limit, and scopes it to 'Practice mode, Consumer Pulse copy only'. It never uses an explicit verb like 'list' or 'retrieve', so the action is inferred from 'inbox' plus the memo collection it describes, and it does not name which sibling (pulse_memo, pulse_data, pulse_use) it differs from.

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 states scope and preconditions ('Practice mode, Consumer Pulse copy only', requires a handoff_code, 'Without the right code you see nothing'), which implicitly tells the agent when this applies. However, it gives no explicit when-to-use versus pulse_memo, pulse_use, or pulse_data, and no statement of what to do instead when you lack the code.

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