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amerilain

polymarket-mcp

by amerilain

get_market

Retrieve detailed information about a Polymarket market using its unique slug identifier.

Instructions

Get detailed info about a specific Polymarket market by slug

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
slugYesMarket slug (e.g. 'will-bitcoin-reach-100k-by-2025')
Behavior2/5

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

Without annotations, the description should disclose behaviors like read-only nature or rate limits. It only says 'get detailed info' but omits any description of side effects, authorization needs, or response characteristics.

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?

Single sentence conveying essential purpose with no fluff. Efficient and front-loaded.

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?

While the tool is simple, the description lacks details on return values or response format. No output schema is provided, leaving the agent without expectations of what 'detailed info' contains.

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 description coverage is 100% for the single parameter (slug). The description adds minimal value beyond the schema, as the schema already provides an example. Baseline 3 is appropriate.

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 it gets detailed info about a specific market by slug, distinguishing it from siblings that list or search multiple markets. However, it could be more specific about what 'detailed info' includes.

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 on when to use this tool versus alternatives. The description does not mention exclusions or context such as needing a known slug.

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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