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eduardobrito21

fastmail-mcp

destroy_sieve_script

Delete a Sieve script by its ID, but cannot remove the currently active script.

Instructions

Destroy (delete) a Sieve script. Cannot destroy the currently active script.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
script_idYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

No annotations exist, so the description must cover behavioral traits. It indicates destructive action and a failure condition, but does not mention irreversibility, side effects, or error handling beyond the given constraint.

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

Conciseness3/5

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

The description is very short and front-loaded, but it sacrifices completeness for brevity, lacking important behavioral and parameter details.

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

Completeness2/5

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

Given the presence of an output schema and many sibling tools, the description is too minimal to fully contextualize when and how to use destroy_sieve_script effectively.

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

Parameters1/5

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

Schema coverage is 0% and the description does not mention the script_id parameter, failing to add any meaning beyond its type and requirement.

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

Purpose5/5

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

The description clearly states the action (destroy/delete) and the resource (Sieve script), and it distinguishes itself by noting a specific constraint: cannot destroy the currently active script.

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 provides a usage constraint (cannot destroy active script) but does not offer explicit guidance on when to use this tool versus alternatives like update_sieve_script or when not to use it.

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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