reconnect_colab_session

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

With no annotations provided, the description carries the full behavioral burden. It discloses that the tool uses a persisted session token and port, returns a boolean indicating success, and is intended for post-restart reconnection. It does not mention failure modes or prerequisites (e.g., whether a prior session must exist), but for a zero-parameter tool the stated behavior is reasonably transparent.

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 two sentences with zero waste. The purpose is front-loaded, and the return value is stated. Every sentence earns its place.

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?

For a zero-parameter tool with an output schema (even though its content is not provided here), the description states the essential context (when to use, what it does, what it returns). There is no missing information an agent needs to call it correctly. It is fully complete for its simplicity.

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 tool has zero parameters, so per the rubric the baseline is 4. The description adds no parameter information because there are none to describe, and the schema already covers everything with 100% coverage. This is appropriate.

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 a specific verb ('Re-opens') with a clear resource (the most recently used Colab notebook) and context (after MCP server restart). It distinguishes itself from siblings by focusing on reconnection with persisted session state, which is not covered by open_colab_browser_connection or get_colab_connection_info.

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 explicitly states the condition for use: 'after this MCP server has restarted.' This provides clear context for when to invoke the tool. However, it does not explicitly mention when not to use it or name alternatives, so it falls short of a 5.

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