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SendGrid MCP Server

SendGrid MCP Server

by deyikong
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

Open Segment Creator

open_segment_creator
Read-onlyIdempotent

Create targeted email segments by opening SendGrid's segment creator in the browser.

Instructions

Open SendGrid segment creator in browser

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "open_segment_creator"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A4.1/5.0
Behavior3/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is clear. The description adds the 'in browser' context, which clarifies that the action opens a UI rather than performing a direct API mutation, but it does not disclose further behavioral details such as navigation side effects or environment requirements.

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 sentence with no wasted words. It front-loads the verb and resource, making the tool's purpose immediately apparent.

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

Completeness5/5

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

For a zero-parameter tool that simply opens a browser UI, the description is complete. The annotations cover safety and side-effect characteristics, and no return value is expected. There are no gaps that would prevent an agent from invoking this tool correctly.

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

Parameters4/5

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

The tool has zero parameters, and the schema coverage is 100%, so there is nothing for the description to add. With no parameters, the baseline of 4 applies.

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 uses a specific verb ('Open') and resource ('SendGrid segment creator') and clarifies the medium (in browser). It is easily distinguished from sibling tools like open_automation_editor or open_single_send_creator because the resource is explicitly named.

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 implies usage: invoke when the agent needs to launch the segment creation UI in a browser. However, it does not explicitly state when to prefer this over alternative tools such as list_segments or update_segment, nor does it mention any prerequisites or exclusions.

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

Deploy Server

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