Firestore Todo List 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 discloses the destructive nature ('Delete') but does not mention behavioral traits like permissions required, whether deletion is permanent or reversible, error handling, or confirmation prompts. For a mutation tool with zero annotation coverage, this leaves significant gaps in understanding the tool's behavior.

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, efficient sentence that front-loads the key action and resource. It contains zero waste, making it appropriately sized and easy to parse for an AI agent.

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 (simple deletion with one parameter), high schema coverage (100%), and presence of an output schema (which handles return values), the description is mostly complete. However, it lacks details on behavioral aspects like permissions or reversibility, which are important for a destructive operation, slightly reducing completeness.

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 the 'id' parameter fully. The description adds no additional meaning beyond what the schema provides (e.g., format constraints or examples). With high schema coverage, the baseline is 3, as the description does not compensate but also does not detract.

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 specific action ('Delete'), resource ('a todo item'), and scope ('from the user's Firestore 'todos' collection by id'), distinguishing it from sibling tools like 'create_todo' or 'update_todo'. It precisely defines what the tool does without ambiguity.

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 implies usage by specifying deletion by ID, but does not explicitly state when to use this tool versus alternatives (e.g., 'complete_todo' for marking as done) or any prerequisites. It provides basic context but lacks explicit guidance on exclusions or comparisons with siblings.

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