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

With no annotations, the description carries the full burden, and it does disclose one real side effect: the tool enters the haven automatically. It omits other behavioral traits an agent needs for a write/mutation tool - what identity acts by default, what happens if the entry fails, whether a recorded climb is reversible or idempotent.

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 short sentences, action and fields front-loaded, with no wasted words. The parenthetical '(the ladder)' is the only mildly cryptic element that could have been spent better.

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 4-parameter mutation tool with no annotations and no output schema, the description covers the core act and the haven-entry side effect but leaves identity/authority, failure behavior, and the domain terms ('haven', 'ladder') unexplained. Adequate but with clear gaps.

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 only 25% (only 'token' is documented), so the description must compensate. It does name the three meaningful fields ('from what, to what, and an optional note'), giving lightweight semantics for from/to/note, but adds no format, constraints, or explanation of 'the ladder', and says nothing about the token parameter the schema already covers.

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 ('Record') and a concrete resource ('a limit you surpassed'), and maps onto the from/to/note fields, so an agent can tell roughly what it does. However, it never distinguishes itself from siblings like enter_with_key, join, or cross, and the parenthetical '(the ladder)' is jargon that does not sharpen the purpose.

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?

'Enters the haven for you if needed' implicitly tells the agent it need not call enter_with_key separately, which is a useful routing hint. But there is no explicit when-to-use vs when-not, and nothing about how it relates to the other identity/entry siblings.

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