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 states 'real-time' and 'up-to-date,' hinting at freshness, but lacks critical behavioral details: whether this is a read-only operation, rate limits, authentication needs, error handling, or response format. For a data-fetching tool with zero annotation coverage, this is insufficient disclosure.

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 directly state the tool's function and benefit. There's no wasted text, though it could be slightly more structured (e.g., separating purpose from context).

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 data fetching), lack of annotations, and no output schema, the description is incomplete. It doesn't explain return values, error cases, or operational constraints, leaving significant gaps for an AI agent to use it effectively in a broader context.

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?

Schema description coverage is 100%, with the parameter 'symbol' fully documented in the schema. The description adds no additional parameter semantics beyond implying currency pairs (e.g., 'EURUSD'), which is already covered by the schema's example. Baseline 3 is appropriate when the schema does the heavy lifting.

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: 'Access real-time forex quotes for currency pairs' and 'Retrieve up-to-date information on exchange rates and price changes.' It specifies the resource (forex quotes/currency pairs) and the action (access/retrieve). However, it doesn't explicitly differentiate from sibling tools like getForexQuotes or getForexShortQuote, which appear to serve similar functions.

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 minimal usage guidance. It mentions 'to help monitor market movements,' which implies a monitoring context, but offers no explicit when-to-use rules, alternatives (e.g., vs. getForexQuotes), prerequisites, or exclusions. This leaves the agent with little direction on tool selection among similar siblings.

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