Claim todo

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

The description adds meaningful behavioral context beyond annotations by stating that the claim is advisory, not a lock, and by specifying the actions that should follow. Combined with readOnlyHint=false and destructiveHint=false, the agent understands this is a non-destructive state-change operation. It does not detail edge cases like claiming an already-claimed item, but the advisory framing mitigates that gap.

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 compact, front-loaded with the core purpose, and every sentence adds value. It fits the essential guidance into two sentences without repetition or filler.

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 simple one-parameter mutation tool, the description covers the action, the advisory nature, the pre-check workflow, and the follow-up calls. There is no output schema, so the description could theoretically mention the return value, but that is not essential for correct invocation.

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%, and the id parameter is adequately described as 'The todo id, e.g. 3'. The description does not add extra parameter semantics, but none are needed because the schema already handles the documentation burden.

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-resource pair: 'Mark an item as actively being worked on by you' clearly identifies what the tool does and which resource it affects. It further distinguishes itself from related operations by calling out todo_release and todo_complete, and by emphasizing that claiming is advisory rather than a lock.

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 provides clear operational context: check todo_list with inProgress:true before starting new work to avoid duplicating someone else's active item, and call todo_release or todo_complete when stopping. It does not enumerate all alternatives or explicitly state when not to use the tool, but the workflow guidance is strong.

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