Pulse MCP Server

create_webhook

Set up webhook subscriptions to receive real-time event notifications from the Pulse billing platform, enabling automated responses to payment completions, invoice updates, and other billing activities.

Instructions

Create a webhook subscription to receive event notifications

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": {
      "url": "<url>",
      "events": "<events>"
    },
    "name": "create_webhook"
  }
}

Input Schema

Name	Required	Description	Default
`url`	Yes	The URL to receive webhook POST requests
`events`	Yes	Array of event types to subscribe to (e.g. ['payment.completed', 'invoice.sent'])

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.1.0Feb 20, 2026

TDQS

C2.9/5.0

Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool creates a subscription but lacks details on permissions required, whether it's idempotent, rate limits, what happens on duplicate subscriptions, or the response format. This is inadequate for a mutation tool with zero annotation coverage.

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 a single, efficient sentence that front-loads the core purpose without unnecessary words. Every part earns its place by clearly stating the tool's function, making it highly concise and well-structured.

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 this is a mutation tool with no annotations and no output schema, the description is incomplete. It doesn't cover behavioral aspects like authentication needs, error handling, or what the tool returns (e.g., a webhook ID). For a tool that creates resources, more context is needed to guide effective use.

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?

The schema description coverage is 100%, so the input schema fully documents both parameters ('url' and 'events'). The description adds no additional meaning beyond what's in the schema (e.g., no examples beyond the schema's event types, no format constraints). Baseline 3 is appropriate as the schema handles parameter documentation.

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 clearly states the action ('Create a webhook subscription') and resource ('to receive event notifications'), which is specific and unambiguous. However, it doesn't explicitly differentiate from sibling tools like 'delete_webhook' or 'list_webhooks' beyond the verb, missing an opportunity for clearer sibling distinction.

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?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing a valid URL or specific permissions), when not to use it (e.g., for one-time events vs. subscriptions), or refer to related tools like 'list_webhooks' or 'delete_webhook' for context.

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