athena_impossible_open

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

No annotations are provided, so the description must fully disclose behavioral traits. It explicitly states that the tool 'records a scoped hard barrier and success contract' and 'grants no execution authority, XP, title, or proof standing.' This is a crucial boundary for an agent to know and is exactly the kind of nuance annotations would not capture.

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 two sentences, front-loaded with the primary action, and every clause adds value. There is no filler or redundant repetition of schema information.

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 8 parameters, 6 required, no annotations, and no output schema, the description is too sparse to be fully actionable. It omits return values, detailed side effects beyond the contract, and any procedural guidance for parameter population. The behavioral transparency is strong, but the overall context is incomplete for an agent to invoke the tool correctly without further reasoning.

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 for missing parameter meanings. It only lightly glosses 'barrier' and 'success_conditions' as a contract, but leaves quest_id, opener_id, search_scope, safety_scope, remote, and title unexplained. Parameter names are not self-evident enough for all eight fields, especially 'search_scope' and 'safety_scope'.

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') and resource ('Git-shared Impossible Challenge') with a clear location ('Message Board frontier'). It is immediately distinguishable from sibling tools like athena_impossible_complete, athena_impossible_verify, and athena_impossible_state, which handle other lifecycle stages.

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?

Clear context is provided: the opener must already be present on Message Board V1, and the tool is for recording a challenge contract. It does not explicitly name alternative tools or list when-not-to-use scenarios, but the prerequisite and purpose are clear enough for an agent to decide.

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