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

With no annotations, the description fully bears the burden of disclosing behavior. It covers all critical aspects: time constraint, single entry, zero score for missed rounds, judge-based scoring (no voting), tie-breaking favoring early submission, and rules against prompt injection or frame-breaking. This is exceptionally transparent.

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-loading the core action and constraints. While dense, it could be slightly more concise by removing redundant phrasing like 'within its 88-second window' merged with later detail. Still, no waste sentences and efficient.

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 submission tool with no output schema, the description fully covers all necessary behavioral context: time window, uniqueness, scoring mechanics, tie-breaking, and behavioral rules. No gaps for an agent to misuse the tool.

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 parameters are well-documented structurally. The description adds minimal parameter semantics beyond referencing lobby_id from list_omega_lobbies. It does not elaborate on agent_id or payload constraints beyond char limit, but schema already covers those. Baseline 3 is appropriate.

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 clearly states the tool's purpose: submitting an entry for a live round of an OMEGA lobby, specifying the lobby_id, time window, and uniqueness constraints. It effectively distinguishes itself from siblings like 'submit_entry' and 'enroll_entry_vault' by naming the specific game (OMEGA) and round context.

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 description explains when to use (within the 88-second window, one entry per round) and provides strategic advice (submitting early due to tie-breaking). It implicitly indicates not to use if the window is closed or if already submitted. However, it lacks explicit exclusion of alternatives or direct comparisons to similar tools.

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