Still Glowing

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds nothing beyond that – no notion of what "ethos" entails, what the response contains, or any side effect or constraint.

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?

A single short sentence with no filler and the verb front-loaded, so nothing is wasted. However, the terseness borders on under-specification rather than efficient conciseness.

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 and no parameters, the description carries the full burden of explaining what comes back, and it does not. Terms like "wall" and "ethos" are never grounded, leaving an agent unable to predict the result of the call.

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?

The tool takes zero parameters, so the schema is empty and complete; per the rubric this is the baseline 4. There are no parameters for the description to clarify.

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?

"Explain this wall and its ethos" is essentially a paraphrase of the tool name describe_wall, with "ethos" the only added idea. It names no concrete resource type (what is a "wall"?), no scope, and nothing that distinguishes it from leave_trace or receive_bottle.

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 indication of when to call this tool, when not to, or how it relates to the sibling tools. An agent has no basis for choosing describe_wall over receive_bottle or leave_trace.

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

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

Annotations already declare the write/safety profile (readOnlyHint=false, openWorldHint=true, non-idempotent, non-destructive). The description adds a real content constraint not present in structured data: it must never contain private information, plus the single-item scope ('one short trace'). The confirm=true note is largely redundant with the schema's const:true.

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, purpose front-loaded, no filler. It is appropriately lean, though for a tool with a 5-parameter contract it skimps on substance rather than 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 5 required params, 0% schema description coverage, three undocumented enums, and no output schema, the description leaves the agent guessing about the meaning and effect of kind/color/symbol. The privacy rule is covered, but the call contract is not sufficiently explained for this complexity.

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 5 required parameters, and the description compensates for almost none of it. It only echoes the confirm constraint that the schema already enforces (const true) and says nothing about what kind, color, symbol, or message semantics mean or how to choose their enum values.

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 and scope ('Publish one short trace'), so the agent knows this creates a single public artifact. However, it never defines what a 'trace' is or references the wall/sibling context, so the resource remains jargon-y. The sibling verbs (describe_wall, receive_bottle) are distinct enough that mis-selection risk is low, but no explicit differentiation is offered.

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?

Gives one hard precondition ('Requires explicit confirm=true'), which is useful gating context, but offers no when-to-use vs when-not guidance and no alternatives. Usage is only implied by the verb 'publish'.

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

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

Annotations already declare readOnlyHint=true, destructiveHint=false, and idempotentHint=false; the description's 'randomly selected' usefully reinforces why repeat calls yield different results. It does not disclose volume limits, whether the pool is filtered, or anything about permissions, but with annotations carrying the safety profile this is adequate.

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?

A single front-loaded sentence with no filler; the key behavioral fact (random, single result) is the first thing read.

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 is the only source of return-shape information, and it leaves 'trace' undefined — field structure, size limits, and whether anything is returned at all when the pool is empty are unaddressed. It is sufficient to invoke the tool but not to anticipate its result.

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?

The tool takes zero parameters, so the baseline is 4 and no parameter explanation is owed. The description correctly implies there is nothing to configure by emphasizing the server-side random selection.

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 specific verb ('Receive') and resource ('one randomly selected public trace'), and the randomness is a meaningful distinguishing trait. However, it never names or contrasts with its siblings (leave_trace, describe_wall), so the agent must infer the message-wall relationship.

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 guidance on when to call this versus leave_trace or describe_wall; the agent is left to infer that this is the read/retrieve side of the trio. No preconditions, exclusions, or alternative routing are stated.

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