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micro-mcp

micro-mcp

by microdotdo
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

Inspect Micro billing

micro_billing
Read-onlyIdempotent

Retrieve the authenticated account's subscription state without exposing payment credentials or card data.

Instructions

Read the authenticated account subscription state without exposing payment credentials or card data.

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": "micro_billing"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Output Schema

NameRequiredDescriptionDefault
okYes
jsonNo
stderrYes
stdoutYes
commandYes
exitCodeYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.5.1

TDQS

A4.5/5.0
Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, and non-destructive behavior, so the description does not need to restate those. The description adds meaningful behavioral context by guaranteeing that payment credentials and card data are not exposed, which is valuable privacy-related information beyond the annotations.

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, compact sentence that front-loads the core action and resource, then adds a critical privacy qualifier. Every word earns its place with no redundancy or filler.

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 read-only tool with an output schema available and comprehensive annotations, this description is complete. It tells the agent what the tool does, what it protects, and implies the appropriate read-only context without requiring additional explanation.

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, so there is no parameter semantics burden on the description. The description appropriately focuses on the operation itself rather than parameter details. A baseline of 4 is appropriate for a no-parameter tool.

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 ('Read') and a specific resource ('authenticated account subscription state'), making the tool's purpose immediately clear. It also distinguishes itself from sibling billing tools like micro_billing_checkout and micro_billing_portal by emphasizing it does not expose payment credentials or card data.

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 clearly indicates this tool is for reading subscription state in a safe, non-sensitive way. It does not explicitly name alternative billing tools or state when NOT to use it, but the read-only framing and privacy guarantee provide sufficient contextual guidance.

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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