Lichess Daily Puzzle

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

Annotations already convey that this is a read-only, idempotent operation. The description adds a list of returned fields (puzzle ID, FEN, etc.), which is useful but not behavioral. No contradictions.

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 a single, clear sentence that efficiently states the purpose and output fields. No unnecessary words.

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?

The description covers the purpose and returned fields, and annotations handle behavioral traits. With an output schema implied, the description is sufficiently complete for a simple tool. Could be improved by noting that the daily puzzle is determined by Lichess and may change daily.

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?

The input schema has one optional parameter with a description stating it's unused. The tool description adds no parameter semantics, but schema coverage is 100%, so baseline of 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 uses a specific verb ('Get') and resource ('today's Lichess daily puzzle'), clearly distinguishing it from sibling tools like lichess.user.profile or lichess.players.top. It also lists the returned fields, leaving no ambiguity.

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?

It is implied that this tool is for retrieving the daily puzzle, but no guidance on when not to use or alternatives among sibling tools (e.g., other lichess tools) is provided.

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