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notification-mcp

notification-mcp

by IndyukovAnton
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

Send notification

notify

Queue and deliver notifications through configured channels. Use event types, source, and URL to route and contextualize; idempotency key prevents duplicate alerts.

Instructions

Queue a notification. Delivery channel and recipient are chosen by server settings.

event: info, action_required (needs a decision), review_requested (ready to inspect), or error. source identifies the project/task. url optionally links to the result. idempotency_key prevents duplicate queue entries for an identical logical event.

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": {
      "message": "<message>"
    },
    "name": "notify"
  }
}

Input Schema

NameRequiredDescriptionDefault
urlNo
eventNoinfo
titleNo
sourceNo
messageYes
idempotency_keyNo

Output Schema

NameRequiredDescriptionDefault
deduplicatedYesTrue when an existing idempotency key was reused
notificationYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

B3.4/5.0
Behavior4/5

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

Annotations provide only the safety profile (readOnlyHint=false, idempotentHint=false, destructiveHint=false). The description adds meaningful behavioral context: notifications are queued rather than sent directly, delivery is server-controlled, and idempotency_key prevents duplicate queue entries. This goes beyond what annotations already provide.

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

Conciseness4/5

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

The description is compact and dense; each line contributes semantic value and the main action is front-loaded. The event list is slightly compressed but still readable.

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

Completeness3/5

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

For a 6-parameter tool with 0% schema coverage, the description covers most parameters well but misses the required message parameter and the title parameter. Output schema exists, so return values need not be described, but the missing parameter semantics leave a meaningful gap.

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 0%, so the description carries the full burden. It explains event, source, url, and idempotency_key with concrete meaning, but it does not explain message — the only required parameter — or title. This is a partial compensation for an otherwise undocumented schema.

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 opens with a specific verb and resource ('Queue a notification') and adds the key scope that channel and recipient are server-chosen. It is clear what the tool does, though it does not explicitly distinguish itself from the sibling notification_status.

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

Usage Guidelines2/5

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

There is no when-to-use guidance or mention of alternatives. The description explains queueing behavior but never states when to use notify versus notification_status, leaving the agent to infer the boundary from the tool names and context.

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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