pwndbg_canary

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states the tool 'Displays' the canary value, implying a read-only operation, but does not explicitly confirm non-destructiveness, side effects, or dependencies (e.g., active session, process attached). This is minimal for a tool with no annotations.

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 description is well-structured with a bolded purpose line, context (source/category), and an Args section. It is concise but includes the file path which is of marginal value to the agent. Removing that would improve 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?

For a simple display tool, the description covers purpose, source, category, and parameters. It does not describe output format, but the presence of an output schema means that is not required. The only gap is lack of behavioral details (transparency), which is scored separately.

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 input schema has 0% description coverage (titles only), but the tool description provides clear explanations for both parameters: session_id is the UUID, show_all controls per-thread display. This adds meaning beyond the schema types and defaults, fully compensating for the schema's lack of descriptions.

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 clearly states the tool displays the stack canary value, a specific verb and resource. It also explains the canary's role in stack-smashing protection, differentiating it from other debug commands. This is higher than siblings like pwndbg_checksec which focus on other security aspects.

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 use for inspecting stack canaries during debugging, but does not explicitly state when to use this tool over alternatives, nor does it provide exclusions or prerequisites. The large sibling list suggests many related tools, but no comparative guidance is given.

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