set_expression

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

No annotations are supplied, so the description carries the full burden, and it discloses essentially nothing: it does not say whether an existing expression is overwritten, whether the change is undoable, whether the node must exist, or what happens on expression errors. 'Set' weakly implies mutation, which is the only behavioral signal present.

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 single sentence is economical and front-loaded with no filler, but its brevity reflects under-specification rather than efficient communication. Structural clarity is fine; content density is too low for a four-parameter mutation 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?

Given four parameters with zero schema descriptions, no annotations, and no output schema, this definition should explain the node/parameter addressing model and the language option. It omits both, leaving the agent without enough information to call the tool confidently.

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% for all four parameters, and the description compensates for almost none of it: node_path (which node the parameter belongs to), parm_name, and the language option (default hscript with unlisted valid values) are all unaddressed. Only the notion that an expression targets a parameter is conveyed.

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 names a specific verb ('Set') and resource ('expression') applied to a parameter, so the basic operation is inferable. However, it is only marginally more than a restatement of the name 'set_expression', and it gives no signal to distinguish it from siblings such as set_parameter, get_expression, or create_vex_expression.

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?

There is no when-to-use guidance, no statement of prerequisites (e.g. that a live node/session is required), and no mention of alternatives like set_parameter or create_vex_expression despite the crowded set_*/expression sibling namespace. The agent must guess the appropriate context.

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