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Mixpanel MCP Server

Mixpanel MCP Server

by T-Campbell18
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
Remote

list_annotations

Retrieve all date-specific notes from your Mixpanel project by specifying start and end dates for analysis.

Instructions

List all annotations in the project. Annotations are notes attached to specific dates.

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": {
      "from_date": "<from_date>",
      "to_date": "<to_date>"
    },
    "name": "list_annotations"
  }
}

Input Schema

NameRequiredDescriptionDefault
from_dateYesStart date (YYYY-MM-DD)
to_dateYesEnd date (YYYY-MM-DD)

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?

No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool lists annotations but doesn't cover critical aspects like pagination, rate limits, permissions required, or what happens if no annotations exist in the date range. For a read operation with zero annotation coverage, this is a significant gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise with two sentences that directly state the purpose and define annotations. It's front-loaded and wastes no words, though it could be slightly more structured by explicitly mentioning the date parameters.

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

Completeness2/5

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

Given the lack of annotations and output schema, the description is incomplete. It doesn't explain return values, error conditions, or behavioral traits like whether dates are inclusive. For a tool with two required parameters and no structured output, more context is needed to guide the agent effectively.

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

Parameters3/5

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

The schema description coverage is 100%, with clear descriptions for 'from_date' and 'to_date' as start and end dates in YYYY-MM-DD format. The description doesn't add any parameter details beyond what the schema provides, so it meets the baseline of 3 for high schema coverage.

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 clearly states the verb ('List') and resource ('all annotations in the project'), and defines what annotations are ('notes attached to specific dates'). However, it doesn't differentiate from sibling tools like 'list_cohorts' or 'list_funnels' beyond the resource type, which is why it's not a 5.

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 provides no guidance on when to use this tool versus alternatives. It doesn't mention sibling tools or contexts where other tools might be more appropriate, such as using 'query_events' for more complex filtering. This leaves the agent with minimal usage context.

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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