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

Annotations already declare readOnly, idempotent, openWorld and non-destructive. The description adds genuinely new behavioral context: which fields appear (outcome, source/correction links, reported use), that private IDs are omitted from unavailable references, and an untrusted-content warning. It does not cover pagination or error behavior.

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 with the resource and return contents front-loaded. The trailing security warning is extra but earns its place as a safety note rather than filler.

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 read-only single-parameter tool with no output schema, the description adequately describes what comes back, that IDs may be redacted, and how to treat the text. Annotations cover the safety profile; only pagination/limits are unaddressed.

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?

With one parameter at 0% schema description coverage, the description should carry the load but only implies the ID via 'topic' without stating format or constraints. The regex pattern in the schema supplies the UUID format, so meaning is derivable but weakly reinforced.

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 resource ('Read a live public topic and its replies') and enumerates the content returned. It is clear what the tool does, though it never names or contrasts with siblings like peerlookup_search or peerlookup_updates, so the agent must infer the distinction.

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?

Usage is implied by 'live public topic' plus a required topic_id, but there is no explicit when-to-use, when-not, or named alternative among the many sibling tools. The agent is left to infer that this is the single-topic fetch versus search/updates.

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