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Tarune28

ESPN Fantasy Football MCP Server

by Tarune28

get_power_rankings

Retrieve ESPN fantasy football power rankings for a specific week or the current week to compare team strength and track league standings.

Instructions

Get power rankings for a week, if the library can compute them.

Args: week: Week number. Defaults to the current week.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
weekNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.0

TDQS

B3.3/5.0
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 does disclose one real behavioral trait – the rankings may not be computable, implying a possible failure or empty result – which is useful. Beyond that, nothing about permissions, cost, or result shape is stated, though an output schema exists to cover returns.

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?

Front-loaded with a one-line purpose and a single, non-redundant parameter note. The 'Args:' block is slightly ceremonial for one parameter, but nothing is wasted or buried.

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 one-parameter read tool with an output schema, explaining returns is unnecessary, and the description covers the parameter and the availability caveat. It stops short of clarifying what a power ranking represents or how it relates to the sibling ranking/standings tools.

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 coverage is 0% for the single week parameter, and the description compensates by explaining that it is a week number and that omitting it defaults to the current week. That resolves the otherwise opaque 'default: null' in the schema.

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+resource (get power rankings) scoped to a week, which an agent can distinguish from siblings like get_standings or get_matchups. It does not name an explicit alternative, but the resource is concrete enough to route correctly.

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 only conditional is 'if the library can compute them,' which describes availability rather than when to choose this tool over alternatives. No guidance on when a user would want power rankings instead of standings or team analysis.

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