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Stop events to a channel

notify_unsubscribe
Idempotent

Stop sending events to a channel. The channel stays for notify_send. Free.

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": {
      "channel": "<channel>"
    },
    "name": "notify_unsubscribe"
  }
}

Input Schema

NameRequiredDescriptionDefault
channelYesA short name for the channel, e.g. "sales-alerts" (lowercase letters, numbers, dashes).

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A4.2/5.0
Behavior4/5

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

Annotations already declare idempotentHint=true and destructiveHint=false, so the safety profile is covered. The description adds useful behavioral context beyond that: the channel is retained and remains usable with notify_send, and the action is 'Free,' signaling no side effects or cost.

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?

Three short sentences, front-loaded with the core action, followed by the key retention constraint. No wasted words.

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 simple one-parameter tool with full schema coverage and annotations, the description covers the essential behavior (stop events, channel retained). It could nominate notify_subscribe as the way to resume, but otherwise it is complete enough to invoke correctly.

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% for the single 'channel' parameter, so the schema carries the parameter semantics. The description adds no extra parameter detail, which is acceptable given the full coverage and the baseline of 3.

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?

States a specific verb ('Stop sending events') and resource ('a channel'), and immediately disambiguates from the sibling notify_remove_channel by noting 'The channel stays for notify_send.' An agent can distinguish it from removal without opening schemas.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies when to use it: to halt event delivery while preserving the channel for notify_send. It does not explicitly name notify_remove_channel as the alternative for fully deleting a channel, but the contrast is clear enough from the phrasing.

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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