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demwick

Polymarket Agent Mcp

analysis.quality

Assess bid/ask spread, order book depth, and price range to determine market quality. Returns pass/fail with specific reasons to avoid illiquid or wide-spread markets before trading.

Instructions

Evaluate market quality by checking bid/ask spread, order book depth, and price range. Returns a pass/fail with specific reasons. Use before placing trades to avoid illiquid or wide-spread markets. Pro feature.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
token_idYesMarket token ID from the CLOB order book
max_spreadNoMax acceptable spread (default: 0.10)
min_depthNoMin $ depth per side (default: $50)
Behavior2/5

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

No annotations exist, so the description must carry full burden. It mentions return format (pass/fail with reasons) and notes 'Pro feature' but lacks details on side effects, authentication, rate limits, or error behavior.

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?

Three concise sentences, front-loaded with the main purpose, complemented by usage guidance and a note. No wasted words.

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

Completeness4/5

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

Given no output schema, the description explains return values. It covers usage context and notes a limitation (Pro feature). Missing details on prerequisites and error cases, but sufficient for a quality check tool.

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 adequate descriptions for all three parameters. The description adds no additional semantic meaning beyond the schema, meeting the baseline.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Evaluate' and the resource 'market quality', and specifies the three checks: spread, depth, price range. It distinguishes from sibling tools by focusing on pre-trade quality assessment.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides explicit usage context: 'Use before placing trades to avoid illiquid or wide-spread markets.' However, no alternatives are mentioned, nor any scenarios where this tool should not be used.

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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