reddit-monitor-mcp

get_subreddit_sidebar

Read-only

Retrieve a subreddit's sidebar, key stats, and moderator list to gain insight into community rules, activity, and moderation.

Instructions

Sidebar/description, key stats, and the moderator list for a subreddit.

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": {
      "subreddit": "<subreddit>"
    },
    "name": "get_subreddit_sidebar"
  }
}

Input Schema

Name	Required	Description	Default
`account`	No
`subreddit`	Yes

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.1.0Aug 29, 2026

TDQS

B3.1/5.0

Behavior3/5

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

The annotations already declare readOnlyHint=true, and the description does not contradict this. The description adds the output categories but does not disclose any other behavioral details such as authentication impact, rate limits, or what happens if the subreddit does not exist. It is acceptable for a simple read operation but not rich.

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 primary resource and then lists its contents. Every word earns its place, and there is no fluff or redundancy.

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?

The tool is simple, the output schema exists, and the read-only annotation covers safety. The description covers the main resource and returned categories. However, the unexplained 'account' parameter and lack of usage direction leave meaningful gaps for an agent trying to call this correctly.

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

Parameters2/5

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

Schema description coverage is 0%, so the description must compensate for the schema's silence. It only identifies 'subreddit' as the target resource and completely ignores the optional 'account' parameter. Since the schema provides no descriptions, the description leaves parameter semantics significantly under-specified.

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 names a specific resource (subreddit sidebar) and lists the returned content categories: sidebar/description, key stats, and moderator list. This distinguishes it from siblings like get_subreddit_feed and get_subreddit_rules by content. It lacks an explicit verb like 'retrieves' or 'fetches,' so it is slightly below perfect.

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?

No guidance is given for when to use this tool versus alternatives. The description does not mention sibling tools, exclusions, or context such as 'use this for sidebar/mod info as opposed to rules or feed.' The agent must infer usage from the tool name and content list.

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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