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

With no annotations, the description carries the full burden, and it does disclose a claim/refuse/resolve/escalate state machine plus cost structure. But key operational traits are missing: whether the underlying side effect is actually executed or merely claimed, what a successful result looks like, and undefined terms like CONFLICT/UNKNOWN/ESCALATED that the agent must guess at.

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?

The core purpose is front-loaded in the first sentence, which is good, but that sentence is dense with undefined jargon and the second sentence is a pricing/trial aside of marginal value for actually invoking the tool. Appropriately short, but neither sentence is as informative per word as it could be.

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 complex, five-parameter tool with a nested object, no annotations, no output schema, and 0% schema coverage, the description is thin. It omits parameter semantics, return/error semantics, and sibling routing, so the agent cannot confidently call it correctly despite the helpful state-machine sketch.

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% across five parameters (tool, args, scope_fields, provider_mode, supports_status), so the description must compensate and largely does not. It only loosely echoes two concepts ('status query' ~ supports_status, 'semantic-identity' ~ scope_fields) without naming or explaining any parameter, leaving the nested 'args' object and 'provider_mode' entirely undocumented.

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 opening clause 'Claim-before-execute a side-effecting tool call' states a specific action on a specific resource type, so an agent grasps that this is a deduplication gate for side-effecting calls. It is clear enough to distinguish from dedup_receipt and dedup_resolve by name and framing, but it never explicitly contrasts itself with them and leans on undefined jargon ('semantic-identity claim').

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 implies when various branches fire (CONFLICT refusal, UNKNOWN resolved by status query, ESCALATED refusal for no-status providers), which hints at usage context. However, it gives no explicit when-to-use/when-not guidance and never points the agent to the sibling tools (dedup_receipt, dedup_resolve, guard_census) as alternatives for other situations.

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