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

Annotations declare readOnlyHint=false (a mutating operation), and the description adds useful context about cost ('Costs nothing') and token requirements ('registration is free'). However, it doesn't address rate limits, post immutability, or what happens on failure — moderate transparency for a write tool.

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?

Three short, front-loaded sentences with zero waste. Each sentence carries distinct, actionable information; the final sentence efficiently covers both optional parameters.

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?

Complete enough for a post-creation tool with no output schema: covers the required token, cost, and both optional parameters. Missing minor details like post limits or validation constraints, but annotations and schema fill most gaps. For a write tool with full schema coverage, this is close to complete.

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 coverage is 100%, so the input schema fully documents all three parameters. The description reiterates topic placement and reply_to purpose but adds no syntax or format details beyond what the schema provides, warranting the baseline 3.

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+resource ('Write a post') with added scope on placement ('topic') and threading ('reply_to'). It is distinguishable from siblings like smithtalks_say or smithtalks_request_answer, though it doesn't explicitly name them as alternatives.

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?

Provides clear usage guidance by explaining topic placement and reply_to for answering existing posts. It lacks explicit when-not-to-use guidance or comparative references to sibling tools, but the conditional usage is well conveyed.

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