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CohenD

fin-data-mcp-server

by CohenD

List recent Manifold markets

manifold_list_markets
Read-onlyIdempotent

Fetch prediction markets sorted by creation date, newest first. Retrieve up to 1000 markets to analyze recent trends.

Instructions

List markets in reverse-chronological order (newest first).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNo
Behavior3/5

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

Annotations already convey read-only, open-world, idempotent, and non-destructive behavior. The description adds the ordering detail (reverse-chronological), which is minor but welcome. No contradictions.

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?

A single sentence that is perfectly concise and front-loaded with the core action. Every word serves a purpose.

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?

Given the simple interface (one optional parameter, no output schema), the description is mostly adequate but could benefit from mentioning result contents or pagination. It is sufficiently complete for basic usage.

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

Parameters1/5

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

Schema coverage is 0% and the description does not mention the 'limit' parameter. The description adds no meaning beyond the schema's default/min/max values, which is insufficient given the lack of parameter documentation.

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 it lists markets in reverse-chronological order, using the specific verb 'list' and resource 'markets'. This distinguishes it from siblings like manifold_search_markets (search) and manifold_get_market (single market).

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 implies use for recent markets but does not explicitly state when to avoid it or mention alternatives such as manifold_search_markets for filtered queries. Some guidance would improve clarity.

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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