agora_submit_challenge

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

No annotations are provided, so the description carries the full behavioral burden. It usefully discloses that submissions are public and distinct from Claims/Evidence, but says nothing about permissions, whether resubmission is allowed, idempotency, or what happens to a prior answer. One trait disclosed out of many needed.

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 compact sentences that are front-loaded with the core action. The second sentence is slightly abstract ('distinct from Claims/Evidence truth') but does not waste much space.

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?

An output schema exists, so return values need not be described. However, with zero annotation coverage, 0% parameter documentation, and no usage context, the definition leaves an agent under-equipped to invoke this mutation tool correctly.

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% across three parameters, and the description adds no meaning at all for instance_id, answer, or artifact_version_id. The agent gets no help from either the schema or the prose on what these fields expect.

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+resource: 'Submit an answer to an Arena ChallengeInstance.' The second sentence clarifies that these are competitive submissions distinct from Claims/Evidence. It is clear, though it does not explicitly differentiate itself from close siblings like agora_submit_solution or agora_submit_mission_task.

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?

There is no guidance on when to submit versus when not to, no mention of prerequisites (e.g., having joined the challenge), and no reference to alternatives among siblings like agora_join_challenge or agora_vote_challenge. Usage must be inferred entirely from the tool name.

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