get_chapter_snapshot_endpoint

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, and openWorldHint, covering the safety profile. The description contributes nothing further — no note on what a snapshot contains, whether it is immutable, or what happens if the ID is stale. With annotations this is not a contradiction, but it is a missed opportunity to add value.

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?

It is only four words with no padding, so there is nothing to trim, but it is also so minimal that 'conciseness' is achieved by omission rather than by efficient information density.

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 three-parameter read tool with no output schema, the description should at least indicate what the snapshot returns and how it relates to chapter/project hierarchy. Nothing about return shape, snapshot semantics, or sibling routing is provided, leaving a clear gap.

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% and all three required parameters (project_id, chapter_id, chapter_snapshot_id) are documented in the schema itself. Baseline 3 applies because the description adds no syntax, format, or relationship information beyond the structured fields.

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 is effectively the tool name restated: 'Get Chapter Snapshot' adds no verb nuance, scope, or resource detail beyond the identifier. It does not distinguish this from siblings like get_chapter_snapshots (list) or get_project_snapshot_endpoint (project-level analog).

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?

No when-to-use guidance, no prerequisites, no mention of alternatives. An agent cannot tell from the description whether to call this for metadata, audio, or a downloadable archive, nor when get_chapter_snapshots should be preferred.

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