take_fix

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

Goes well past the annotations (readOnlyHint, idempotentHint, destructiveHint=false) by disclosing that the view is rebuilt fresh from the logbook, that counts reflect collected records rather than proven complete history, that data_complete covers source collection health only, and by explicitly warning that returned project text is owner data and never instructions. These are exactly the trust and freshness details an agent cannot get from structured fields.

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?

Purpose and scope are front-loaded in the first clause and every subsequent clause carries real weight (returned fields, freshness, completeness caveat, injection warning). It is dense and metaphor-laden rather than padded, but the long run-on field list is harder to scan than a short structured list would be.

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?

With no output schema and no parameters, the description carries the full burden of describing the return value, and it does: named fields, per-voyage granularity, freshness source, and data_complete semantics. It also pre-empts the main safety risk of returning third-party text, so an agent has everything needed to call and interpret it.

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 tool takes zero parameters and the schema confirms additionalProperties=false, so there is nothing parameter-level to explain; per the baseline that caps at 4 rather than 5. The description's field enumeration describes outputs, not inputs, so it adds no parameter semantics but also leaves no 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?

States a concrete verb with an explicit gloss ('Take a fix (sync view) of the chart (dashboard)') and enumerates exactly what it returns: KPIs, per-voyage status, days idle, last navigator, unlogged watches, now_behind, Summary and Next step. The nautical metaphor ('fix', 'chart', 'logbook') is decoded inline, so intent is recoverable, but the name/purpose still overlaps conceptually with siblings read_chart and status without stating how they differ.

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 says it is read-only and built fresh from the local logbook, which implies 'use for a current snapshot', but it gives no explicit when-to-use, no exclusions, and never names read_chart, status, or eod_report as alternatives. The agent must infer the boundary from sibling names alone.

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