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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so 'never changes workspace data' largely restates them. The genuinely additive detail is the runtime filtering rule — the dispatcher will reject operations not annotated read-only — which is behavioral context the annotations on this tool alone don't convey. No mention of failure behavior for an unknown or non-read-only toolName.

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?

Two sentences, no filler, with the read-only restriction stated up front alongside the purpose. Slightly under-specified rather than padded, which is the right failure direction for a short definition.

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 generic dispatcher with a free-form arguments object and no output schema, the description should explain the discovery path for toolName and that the return value is the underlying operation's result. Neither is covered, though the safety profile is adequately conveyed through annotations plus the read-only restriction sentence.

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%, so the description must compensate and doesn't. It never says that toolName is the identifier of a cataloged operation (and where to look it up), nor that 'arguments' is an arbitrary object forwarded verbatim to that operation — a notable gap for a nested, free-form parameter.

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 and resource: run one cataloged read-only MagicInterview operation with schema-defined arguments. It implicitly separates itself from the write-side siblings by restricting to readOnlyHint: true operations, though it never names magicinterview_execute_tool or magicinterview_app_read explicitly.

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 constraint 'accepts only operations annotated readOnlyHint: true' gives an eligibility rule, which is real usage guidance. But it doesn't tell the agent where to obtain a valid toolName (the catalog sibling is never mentioned), nor when to prefer this over magicinterview_execute_tool or magicinterview_app_read.

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