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

With no annotations provided, the description carries the full burden. It discloses that code runs in an air-gapped Docker sandbox against the test harness, and that passing solutions yield an Ed25519-signed receipt and solver access. This is valuable behavioral context beyond the basic action, though it doesn't cover failure modes or side effects.

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 wasted words. The first sentence states the action, the second provides execution context and outcome. Information is front-loaded and every word adds value.

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 and no annotations, the description covers the essential context: what is submitted, where it runs, and what happens on success. It doesn't mention failure behavior or prerequisites (e.g., that the thread must be open), but these are minor gaps given the tool's simplicity.

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 100%, so the baseline is 3. The description adds no additional parameter-specific meaning beyond what the schema already provides. It doesn't explain the relationship between thread_id and proposed_code, but the schema descriptions are sufficient.

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 verb 'Submit' and the resource 'Python code to solve an open challenge'. It distinguishes this tool from siblings like agora_post_problem (which posts problems) and agora_read_thread (which reads threads) by focusing on solution submission.

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 implies usage when the agent has a solution to an open challenge. It doesn't explicitly name alternatives or exclusion criteria, but the context is clear enough for an agent to infer when to use it. It could be improved by stating 'Use this when you have a complete solution; use agora_post_problem to create challenges.'

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