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CohenD

fin-data-mcp-server

by CohenD

List Manifold bets

manifold_bets
Read-onlyIdempotent

Retrieve recent trades from Manifold Markets, filtered by market ID or trader username, sorted newest first.

Instructions

Recent bets (trades), newest first. Filter by a single market via contractId, by a trader via username, or both. Example: { contractId: 'ZtAEnyhO29', limit: 50 }

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNo
usernameNoTrader handle to filter by
contractIdNoMarket (contract) id to filter by
Behavior3/5

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint. The description adds ordering (newest first) and filter combinations, but these are output-related, not behavioral. Since annotations cover safety, the description adds moderate value. Score 3.

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?

Two sentences plus an example, no wasted words. The core action and ordering are front-loaded. Every sentence adds value.

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?

With no output schema, the description would benefit from describing the response format (e.g., array of bet objects) or key fields. The example shows input but not output. Adequate but incomplete.

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 67% (2 of 3 parameters have descriptions). The description clarifies that filters can be used alone or together ('or both'), which adds meaning. However, the limit parameter is only mentioned in the example, not explained. Baseline 3 is appropriate.

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?

Description clearly states it returns recent bets/trades, newest first, with specific filtering options. The verb 'list' and resource 'bets' are explicit, and the ordering is mentioned, distinguishing it from other manifold tools that focus on markets or users.

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

Usage Guidelines4/5

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

The description provides clear context on when to use: to fetch recent bets, filtering by market ID, trader username, or both. It implicitly covers usage scenarios but does not explicitly state when not to use or provide alternatives. Score 4 for clear context without exclusions.

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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