chimerax_session_save

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

With no annotations, the description carries the full burden of behavioral disclosure. It mentions that the command saves a session and returns a result, but it does not disclose whether existing files are overwritten, whether a running ChimeraX instance is required, or what specific side effects occur. This is a significant gap for a mutation-like save operation.

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?

The description is extremely concise, consisting of a single purpose sentence plus clearly labeled Args and Returns sections. Every word earns its place with no filler or redundancy.

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 simple one-parameter tool, the description covers purpose, parameter, and return value. However, it omits any context about prerequisites (e.g., ChimeraX must be running) or behavioral edge cases (e.g., file overwrite behavior), which would be expected given the lack of annotations. It is minimally complete but not thorough.

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 input schema only lists 'path' as a string with no description, so schema coverage is 0%. The description compensates by explaining that 'path' is the file path for a .cxs session file, adding crucial meaning. It does not exhaustively cover all aspects (e.g., absolute vs relative paths), but it provides the core semantic meaning.

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 clearly states the verb 'Save' and the resource 'current ChimeraX session', making the tool's purpose unambiguous. It does not explicitly distinguish from sibling tools like chimerax_session_open, but the save/open distinction is clear from the verb.

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 usage is implied: users should call this when they want to save the current session to a file. However, there is no explicit guidance on when to use this tool versus alternatives or any exclusions, so it only meets the 'implied usage' criterion.

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