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

Annotations declare a non-readonly, non-idempotent, non-destructive, closed-world mutation, and the description adds genuinely useful context beyond them: the call returns scape_id and scape_key, the key is shown only once and must be retained, and the call is billed via x402 when payments are enabled. It does not say what happens on a second call (new scape vs error) or whether there is a quota, which is the main remaining gap for a non-idempotent creator.

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 tight sentences, front-loaded with what is created, followed by the return contract and the payment note. Slightly dense parenthetical phrasing, but no sentence is wasted.

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?

With no output schema, the description correctly takes on the return contract (scape_id, scape_key, shown once) and mentions the payment precondition and the auth dependency on inspector_pass. For a two-parameter creation tool this covers what an agent needs to invoke it correctly; only lifecycle/duplication behavior is missing.

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 100%, so both parameters (name, privi_pass) are already documented in the schema, including that privi_pass comes from inspector_pass. The description adds no parameter-level detail of its own, so the baseline of 3 applies.

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 uses a specific verb ('Open') plus a named resource ('private Dream Scape'), then defines it as 'your own quantum environment that keeps every job and result,' which tells an agent what it gets. It is distinguishable from dreamscape_jobs/dreamscape_submit (operations inside a scape) and from vault_open, though it never explicitly contrasts itself with those siblings.

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?

Usage is implied rather than stated: you open a scape to hold jobs and results, and the description points to quantum_pricing for the paid-per-call condition. There is no explicit when-to-use or when-not-to-use guidance, no note on whether repeated calls create separate workspaces, and no routing advice among the many sibling tools.

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