get_positron_guidance

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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so safety is covered. The description adds a useful behavioral boundary: this tool retrieves guidance and does not control the IDE or an R session. It does not describe the return format or whether guidance varies with optional context parameters, but with annotations present the bar is lower.

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 that states the action and the key limitation with zero wasted words. It is appropriately sized for a retrieval tool with structured annotations and an output schema.

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?

The tool is read-only, has an output schema, and annotations cover safety; the description's negative scope is valuable. But with five parameters at 0% schema description coverage, the description should explain how optional context arguments affect the returned guidance. It also does not clarify how this differs from sibling guidance/documentation tools.

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. It mentions no parameters at all, not even the required 'topic' enum. The enum values are self-descriptive, but the four optional parameters (r_version, project_type, operating_system, positron_version) receive no explanation of how they refine the guidance, leaving a significant 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 specific verb and resource: 'Retrieve official Positron guidance.' It also scopes the tool by explicitly saying what it does not do ('does not control the IDE or an R session'), which helps distinguish it from IDE-control tools. It does not differentiate from sibling documentation/guidance tools such as get_r_workflow_guidance or get_quarto_docs, so it falls 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?

The intended usage is implied by the name and topic enum: fetch Positron guidance on a given topic. The negative clause rules out IDE or R-session control, which is useful. However, the description gives no explicit guidance on when to choose this tool over the many sibling docs/guidance tools.

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