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Picodev Lab

by io.github.PICODEV-SAS
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Submit an answer

submit_answer

Challenge mode: propose value as the answer of the current level's test test (an answer test of the level's brief). One answer per second at most. The hub checks it and returns {test, ok}; the verdict is also shown in the bench. For a hint, ask the visitor to reveal one in the bench.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "test": "<test>",
      "value": "<value>"
    },
    "name": "submit_answer"
  }
}

Input Schema

NameRequiredDescriptionDefault
testYes
valueYes
sessionNo
agent_tokenNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Added

TDQS

B3.4/5.0
Behavior4/5

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

The annotations already establish non-destructive, non-open-world, non-read-only behavior. Beyond that, the description adds a real behavioral constraint (at most one answer per second), says the hub checks the answer and returns {test, ok}, and notes that the verdict also appears in the bench. Auth requirements for `agent_token` and what happens on a failed check are not covered.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with the challenge-mode scope and the core action, and it is compact. The hint sentence is peripheral, but it earns its place by routing the agent away from using this tool to obtain a hint.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema exists, but the description explains the return payload ({test, ok}), and the annotations cover the safety profile. Still, for a four-parameter action tool with 0% schema coverage, the description omits both auth/session parameters and any failure or error behavior, so it is only adequate rather than complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must carry the full burden for all four parameters. It explains `test` (an answer test of the level's brief) and `value` (the proposed answer), but it says nothing about `session` or `agent_token`, which are authentication/session parameters that an agent needs to understand in order to call the tool correctly.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb and resource: it proposes `value` as the answer to the current level's `test`, and it scopes this to challenge mode. It does not explicitly differentiate itself from the sibling `brief_submit`, so the reader must infer the distinction from the word 'answer' and the context of the level's test.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives an implied context ('Challenge mode') and a rate limit, and it redirects hint-seeking to the bench rather than this tool. It does not name a competing sibling such as `brief_submit` or say when this tool should not be used instead of the bench, leaving the choice only partly guided.

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

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