send_repo_email_to_user

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

Discloses use of Gmail, environment variables (SENDER_EMAIL, GOOGLE_APP_PASSWORD), fallback behavior for repo_url, and return value. Without annotations, description carries full burden and does so well.

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?

Description is moderately concise with 4 sentences, front-loaded with purpose. Includes parameter details and environment setup without unnecessary fluff.

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?

Covers prerequisite (after upload, email confirmed), dependencies, and return value. While it could mention error scenarios, it is complete for a send email tool given no output schema.

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?

With 0% schema description coverage, the description explains all three parameters: email (validated), repo_url (optional, defaults from last upload), description (optional). Adds context beyond the schema.

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 it sends a repo URL to the user's email after a successful GitHub upload, making it distinct from sibling tools like upload_to_github and generate_mcp_server.

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?

Explicitly states to call only after the user has confirmed their email and implies after a successful upload. However, it does not explicitly mention when not to use or alternatives.

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