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amerilain

polymarket-mcp

by amerilain

top_markets

Retrieve top Polymarket prediction markets sorted by 24-hour volume, with optional filtering by total volume.

Instructions

Top Polymarket markets by 24h volume

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoNumber of results (default 10)
by_totalNoSort by total volume instead of 24h
Behavior2/5

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

No annotations exist, so the description must cover behavioral traits. It only states the output is top markets by volume, omitting details like return format, read-only nature, or any side effects. Minimal transparency.

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?

Description is a single concise sentence. It is well-structured and front-loaded, but could be slightly more informative without losing conciseness.

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 an output schema and the tool's simplicity, the description still fails to specify what data fields are returned or how it complements sibling tools. Incomplete for reliable selection and invocation.

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?

Schema coverage is 100% with descriptions for both parameters. The tool description adds no additional meaning beyond the schema, so baseline score of 3 applies.

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?

Description clearly states the tool returns top Polymarket markets sorted by 24h volume. It identifies the resource and sorting criterion, but does not explicitly differentiate from siblings like 'top_movers' which may involve price movement.

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 provided on when to use this tool versus sibling tools like 'search_markets' or 'top_movers'. The description lacks context for appropriate invocation.

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

Install Server

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