Checkpoint Get

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

readOnlyHint=true already tells the agent this is a safe read. The description adds one useful behavioral detail beyond that: it returns "weight metadata" rather than weights or a payload, which matters for a checkpoint tool. It says nothing about error behavior for a bad path or about the returned fields, leaving meaningful gaps.

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. Every clause (metadata, exact path, URI scheme) carries information an agent needs.

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-value detail is not required, and the read-only annotation covers safety. What is missing is the linkage to checkpoint_list as the source of a valid path and any hint about failure modes, leaving the definition thinner than the surrounding checkpoint_* namespace warrants.

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 0% and the single parameter is documented only as "string". The description partially compensates by specifying the tinker:// URI scheme and the requirement that the path be exact, but it does not say where such a path comes from or what an invalid one does.

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 specific verb+resource ("Get checkpoint weight metadata") that separates it from sibling checkpoint_list (enumeration) and checkpoint_export/delete/publish (mutations). However, it never names those siblings, so the agent must infer the boundary itself.

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 "using an exact tinker:// path" implies this is a point-lookup that requires a known path, which indirectly suggests checkpoint_list is the way to discover one. No explicit when-to-use or when-not-to-use statement is given, so the guidance remains implied.

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