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

Annotations give a blanket destructiveHint=true, but the description narrows it: only `release` is destructive, which is genuinely useful disambiguation. It also discloses that allocate is get-or-create (may return an existing slot) and that fill doubles as the heartbeat — behavior not visible in the schema. Auth/permission requirements and rate limits are still unstated.

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?

Tight and front-loaded: the write scope and the destructive action appear immediately, and the sibling routing is at the end. The parenthetical nesting makes it dense but every clause carries information; no filler sentences.

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 9-parameter write tool with no output schema, the description covers the action lifecycle, the destructive action, and sibling routing, while the schema covers per-parameter constraints (version CAS, 409, ID formats). Missing is any mention of permissions or what release actually destroys.

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 the schema already documents all 9 parameters; baseline would be 3. The description earns above baseline by adding action-level semantics the schema lacks — get-or-create on allocate and heartbeat behavior on fill — which help the agent choose the right action.

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?

Names a specific resource (Agent Intents) and enumerates the three write operations — allocate, fill, release — with concrete semantics for each. It also explicitly distinguishes itself from the sibling `intent` tool, so an agent can route 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?

Explicitly routes read operations to `intent`, and the allocate→fill→release lifecycle implies the intended ordering. It does not, however, state preconditions for each action (e.g., when allocate is preferable to reusing a slot) beyond the get-or-create hint.

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