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

With no annotations, the description carries the full disclosure burden and does substantial work: it reveals the namespace-scoped privacy model, fingerprint normalization, the dual check/register behavior, and the paid production endpoint via x402. It omits idempotency of re-registration, TTL expiry behavior, and error cases, so it is not exhaustive.

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 purpose and HIT/MISS contract are front-loaded and earn their place. However, the trailing attribution and doubly-nested parenthetical about AYNE, the production URL, and x402 pricing adds clutter that distracts from tool selection, and the core sentence is dense enough to require re-reading.

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 four-parameter tool with no output schema and no schema descriptions, the definition covers nearly everything an agent needs: scope, fingerprint basis, both outcomes, and the follow-up action. Missing are TTL semantics and the shape of the HIT payload beyond 'result pointer'.

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%, so the description must compensate and largely does: namespace_key is framed as the private team scope, task is the input to the normalized fingerprint, and result_pointer is the registration payload on MISS. Only ttl_hours is left unexplained, which is the sole material gap.

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 states a concrete verb and resource: check whether a teammate in the same namespace_key already ran a task, returning HIT with the earlier result pointer or MISS. That is far more specific than the bare name 'dedupe'. It does not explicitly contrast itself with any sibling tool, so it stops short of a 5.

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?

Timing guidance is explicit and actionable: call this before your agent pays to run a task, and on MISS pass result_pointer to register the run. There is no when-not guidance (e.g., when dedupe is unnecessary or when a different ledger/locker tool is preferable), which keeps it out of 5 territory.

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