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by io.github.SimianX-AI
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Stop a news watch

stop_news_watch
DestructiveIdempotent

Stop matching news for a watch. (needs the starter plan or above)

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": {
      "watch_id": "<watch_id>"
    },
    "name": "stop_news_watch"
  }
}

Input Schema

NameRequiredDescriptionDefault
watch_idYesWatch id

Schema Changelog

Changes observed during successful MCP inspections.

  1. Added

TDQS

A3.6/5.0
Behavior3/5

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

The annotations already declare destructiveHint=true, idempotentHint=true, and openWorldHint=true, so the safety profile is largely covered. The description adds the plan requirement but does not clarify what exactly is destroyed or whether the watch record persists after stopping.

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

Conciseness5/5

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

The description is two short sentences and front-loads the action before the plan requirement. Every sentence earns its place with no redundancy.

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

Completeness4/5

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

For a low-complexity tool with one fully documented parameter and rich annotations, the description is largely sufficient. A minor gap remains around the post-stop state of the watch, but the essential action and eligibility constraint are present.

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

Parameters3/5

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

Schema description coverage is 100%, and the single watch_id parameter is documented as a UUID. The description does not add any meaning beyond what the schema already provides, so baseline 3 applies.

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: stopping matching news for a watch. It is clear on its own, but it does not explicitly distinguish the tool from siblings such as watch_news or list_news_watches.

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?

It gives a useful eligibility prerequisite ('needs the starter plan or above'), but does not explain when to use this tool versus alternatives or name any sibling tools. Usage is implied by the verb rather than explicitly 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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