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

Annotations already declare readOnly, idempotent and non-open-world, and the description adds useful context beyond them: it is free, requires no API key, and returns the best matches with links to pages containing explanations and KQL/CQL/SPL/bash queries. It does not state result-count limits or how ranking behaves, which keeps it short of a 5.

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 purpose and breadth are front-loaded in the first sentence, and the second sentence adds what each page contains and what is returned. The parenthetical example lists are somewhat dense, but each item conveys real coverage information 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 single-parameter read-only search tool with no output schema, the description covers scope, return shape ('best matches with links'), and access requirements ('free; no API key needed'). Nothing an agent needs in order to call it correctly appears to be missing.

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 only one parameter and 100% schema description coverage, the schema already defines the query field as 'an event ID, event name, code, log message or words'. The description echoes that accepted scope when listing the covered reference types but adds no syntax, formatting or matching-behavior details beyond the schema.

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 opens with a specific verb and resource ('Finds LogTriage's reference pages for an investigation') and then enumerates the exact content domains covered: Windows event IDs, AADSTS, NTSTATUS, CloudTrail events, Falcon events, sshd/PAM messages and field references. An agent can tell this is a reference/knowledge lookup rather than a log-scanning or per-record explanation tool.

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 phrase 'for an investigation' implies when to reach for it, but there is no explicit routing guidance against overlapping siblings such as lookup_error_code, explain_log_record or check_ip_blocklists. The agent must infer that this is the keyword-search entry point while those handle specific codes or individual records.

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