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

With no annotations, the description carries the full burden and does disclose meaningful traits: the response is an authenticated read backed by signed headers and IAVL proofs, and copied JSON is explicitly non-authorizing for signing. It does not state read-only semantics outright, nor rate limits, ordering, or what happens on an unverified header.

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?

Two tight sentences, front-loaded with the read scope followed by the security constraint. Dense domain jargon ('IAVL-proven', 'signed-header') slightly reduces readability but no sentence is wasted.

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 3-parameter tool with no output schema and no annotations, the description leaves the return shape, the meaning of the keys array, and the selection logic between all three parameters unaddressed. It conveys the verification/security posture but not enough for an agent to call it correctly across parameter combinations.

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 only partly does: 'member' and 'instance' are named in passing, but the 'keys' array (up to 32 items) is never explained, nor is the expected uain1… member format or what happens when keys are omitted.

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?

States a specific verb ('Read') and a specific resource ('finalized native state'), and enumerates the scope (member, instance and record state). It is clearly distinguishable from uain_native_submit (write) and uain_native_receipt, but it never names those siblings or formalizes the boundary.

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?

There is no statement of when to call this versus uain_native_receipt or uain_native_submit, nor any prerequisite about the caller's signing context beyond a passing warning. The 'hold the member key locally' line implies a precondition but does not say when this read is the right choice.

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