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reddit-ads-mcp

reddit-ads-mcp

by filippofinke
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

Get app events last fired

reddit_ads_get_app_last_fired
Read-only

Get the last fired timestamp for each mobile conversion event of a Reddit Ads app to track conversion activity.

Instructions

Get when each mobile conversion event last fired for an app.

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": {
      "app_id": "<app_id>"
    },
    "name": "reddit_ads_get_app_last_fired"
  }
}

Input Schema

NameRequiredDescriptionDefault
app_idYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.9/5.0
Behavior2/5

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds only a restatement of the core retrieval purpose and discloses no additional behavioral traits such as return shape, pagination, latency, or authentication 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?

A single sentence with no filler, front-loading the action and the scope. Every word contributes to the purpose statement.

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?

For a simple one-parameter read-only tool with annotations covering safety, the description adequately states what is returned. However, it omits any pointer to where app_id comes from and lacks usage context, leaving clear gaps for an agent trying to invoke it independently.

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 carries full burden for the single required app_id parameter. It only implies that an app is involved via 'for an app' and gives no format, source, or identification guidance for the app_id value.

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?

States a specific verb ('Get when...last fired') and resource ('each mobile conversion event...for an app'). This effectively distinguishes it from the sibling reddit_ads_get_pixel_last_fired by scoping to app events rather than pixels, but it does not explicitly name or contrast with any sibling tool.

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 gives no when-to-use guidance, no prerequisites, and no alternatives. It does not mention that this is for mobile app conversion events as opposed to pixel events, nor when to prefer it over reddit_ads_list_apps or reddit_ads_get_pixel_last_fired.

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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