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

Annotations already state readOnlyHint=true, idempotentHint=true, destructiveHint=false, so the safety profile is covered. The description adds the useful detail that it surfaces artifacts and checkpoint state, but says nothing about behavior on unknown ids, errors, or freshness of the returned state.

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 with no filler; the key content (read a saved journey) comes first. It is terse to the point of omitting scope details, but nothing is wasted.

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 one-parameter getter with an output schema that documents the return shape, the definition covers what the tool returns (artifacts, checkpoint state) and that it is a read. Missing only edge-case behavior such as not-found handling, which is minor here.

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 0% and the single `id` parameter is undocumented, so the description would need to compensate. It only indirectly implies the id identifies a journey via "a saved video creation journey"; it never states the id format or that it must be an existing journey UUID (the schema only encodes this as a regex).

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?

Specific verb ("Read") plus a specific resource ("saved video creation journey") and an indication of what is returned ("current artifacts and checkpoint state"). It reads clearly as the single-journey getter versus journeys_list, though it never explicitly distinguishes itself from journey_authoring_get or journey_overlays_get.

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 the name and by "saved" (a persisted journey that already exists, keyed by id), but there is no explicit statement of when to call this versus journeys_list or the other journey_* siblings, and no prerequisites are given.

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