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

Annotations already declare readOnlyHint=true, idempotentHint=true, and openWorldHint=false, so the safety profile is covered. The description adds that the response includes the project state captured at snapshot time, which is useful context, but says nothing about failure modes (e.g., unknown snapshot_id) or whether the snapshot content is static.

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 efficient sentence with no filler, front-loaded with the verb and the scope of what is returned. It is appropriately sized for a simple two-parameter read tool.

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?

An output schema exists, so return values need not be explained in prose, and annotations cover the read-only/idempotent nature. What remains is minor: no mention of behavior when the snapshot does not exist or belongs to another project.

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 description coverage is 100% with two UUID parameters fully documented in the schema, so the description need not restate them. It adds no extra meaning about how project_id and snapshot_id interact, so baseline 3 applies.

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 states a specific verb (Get) and resource (a saved snapshot's full detail), making it clearly distinct from projects_list_snapshots and create_project_snapshot. It does not explicitly name a sibling, but 'full detail' implicitly contrasts with list-style tools.

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 only implied: the agent can infer this is the tool to call when it needs a snapshot's complete contents rather than a list. There is no explicit statement of when to prefer this over projects_list_snapshots or restore_project_snapshot, and no prerequisites noted.

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