Cursor10x MCP

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

With no annotations provided, the description carries full burden but is minimal. It implies a logging/monitoring function ('tracks') but doesn't disclose behavioral traits such as whether this is a read-only operation, if it stores data persistently, requires specific permissions, or has side effects like updating a database. The description lacks details on what 'tracks' entails beyond the basic action.

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 a single, straightforward sentence that efficiently states the tool's purpose without unnecessary words. It's front-loaded with the core function, though it could be slightly more informative without losing conciseness.

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 complexity (3 parameters, no annotations, no output schema), the description is incomplete. It doesn't explain what the tool returns, how tracking is implemented, or interactions with sibling tools (e.g., 'getActiveFiles' for retrieval). For a tool that likely involves state changes or logging, more context is needed to guide effective use.

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%, so the schema already documents all parameters (action, filename, metadata) with clear descriptions. The description adds no additional meaning beyond what the schema provides, such as explaining the relationship between parameters or typical use cases, meeting the baseline for high coverage.

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 states the tool 'tracks an active file being accessed by the user', which provides a basic purpose (verb+resource). However, it's vague about what 'tracks' means operationally and doesn't differentiate from sibling tools like 'getActiveFiles' or 'recordEpisode', which may have overlapping functionality with file tracking or logging.

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 offers no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites, context (e.g., real-time monitoring vs. logging), or exclusions, leaving the agent to infer usage from the name and parameters alone.

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