Skip to main content
Glama
closermethod

Newsletter Growth MCP

by closermethod

interpret_list_metric

Diagnose your newsletter metrics by comparing open, click, growth, unsubscribe, and reply rates to practitioner ranges. Receive a healthy range, warning threshold, and diagnostic.

Instructions

Interpret a list metric against practitioner ranges: open_rate, click_rate, growth_rate, unsubscribe_rate, reply_rate. Returns healthy range, warning threshold, and the diagnostic.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
metricYes
Behavior3/5

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

No annotations are provided, so the description carries the full burden. It discloses the return values (healthy range, warning threshold, diagnostic) but does not mention whether the tool is read-only, potential errors, or other behavioral nuances.

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, front-loaded with the verb 'interpret', and includes only relevant information. Every word earns its place.

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 tool with a single enum parameter and no output schema, the description adequately covers purpose, input, and return values. The agent can determine when to use it and what to expect.

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?

Schema description coverage is 0%, but the description lists the exact parameter values and explains their context ('practitioner ranges'), adding semantic meaning beyond the raw enum. It compensates well for the low schema coverage.

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 clearly states the tool's action ('Interpret a list metric'), specifies the target category ('practitioner ranges'), and lists all supported metric types. It is specific and distinct from sibling tools which focus on different operations.

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 when you have one of the listed metrics, but it does not explicitly state when to use this tool versus alternatives or provide exclusion criteria. No alternative tools are mentioned.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/closermethod/newsletter-growth-mcp'

If you have feedback or need assistance with the MCP directory API, please join our Discord server