Financial Modeling Prep MCP Server

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

No annotations are provided, so the description carries the full burden. It mentions 'real time' data and 'fast look', hinting at live updates and performance, but fails to disclose critical behavioral traits such as rate limits, authentication requirements, error handling, or data freshness guarantees. This is inadequate for a real-time data tool with zero annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise and front-loaded, with two sentences that efficiently convey the core functionality and key features ('live currency exchange rates, price changes, and volume'). There is no wasted text, though it could be slightly more structured for clarity.

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

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

Given the tool's complexity (real-time forex data) and lack of annotations or output schema, the description is incomplete. It omits essential context like response format, error conditions, usage limits, and comparison to sibling tools, making it insufficient for an agent to use the tool effectively without additional assumptions.

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

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

The input schema has 100% description coverage, with the 'symbol' parameter fully documented in the schema. The description adds no additional parameter semantics beyond implying forex pair usage, so it meets the baseline of 3 where the schema does the heavy lifting without extra value from the description.

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

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

The description clearly states the tool's purpose: 'Quickly access concise forex pair quotes' with details on what data is retrieved ('live currency exchange rates, price changes, and volume in real time'). It distinguishes from siblings like 'getForexQuote' by emphasizing speed and conciseness ('snapshot', 'fast look'), though not explicitly naming alternatives.

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

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

The description provides no explicit guidance on when to use this tool versus alternatives like 'getForexQuote' or 'getForexBatchQuotes'. It mentions 'quickly access' and 'fast look', implying it's for lightweight needs, but lacks clear when/when-not instructions or prerequisites, leaving usage context vague.

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