paymo_stop_timer

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

No annotations are provided, so the description carries the full burden. It discloses important behaviors: it is a no-op if no entry is active, and it may refuse to stop entries under a minute old. This goes beyond the basic action and helps the agent anticipate outcomes.

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: two sentences, front-loaded with the primary action, followed by essential edge cases. Every sentence earns its place; no redundant or peripheral information.

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 tool with no parameters and no output schema, the description covers all necessary context: the operation, the no-op case, a potential failure mode, and an alternative tool. It is complete for an agent to decide when and how to invoke it.

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 shows zero parameters (100% schema coverage). With no parameters to explain, the baseline is 4. The description correctly makes no parameter-related claims, and no additional parameter semantics are needed.

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 action: stop the running Paymo time entry of the authenticated user. It is specific (verb+resource) and distinguishes itself from siblings like paymo_start_timer and paymo_timer_status by focusing on stopping the time entry.

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?

Explicit when-to-use instructions are present: stopping the running time entry. It also provides a clear when-not-to-use and alternative: if the entry is under a minute old, Paymo may refuse the stop, so delete it with paymo_delete_entry instead.

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