memvid_session

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

Annotations provide basic hints (e.g., readOnlyHint=false, destructiveHint=false), but the description adds context by specifying the four possible actions (list, start, stop, replay) and the required file parameter. However, it lacks details on behavioral traits such as what 'stop' entails (e.g., whether data is saved), error conditions, or session persistence. No contradiction with annotations exists.

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 extremely concise and front-loaded, consisting of a single, efficient sentence: 'Session management - list, start, stop, or replay sessions'. Every word earns its place by summarizing the tool's core functionality without redundancy or unnecessary detail.

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 moderate complexity (5 parameters, no output schema) and rich annotations, the description is adequate but has gaps. It covers the basic purpose and actions but lacks details on return values, error handling, or how parameters interact (e.g., if 'list' and 'start' can be used together). For a session management tool with multiple operations, more context would be beneficial.

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 each parameter clearly documented in the input schema (e.g., 'file' as path to .mv2 memory file, 'list' as boolean to list sessions). The description mentions the actions (list, start, stop, replay) which align with parameters but doesn't add significant meaning beyond the schema, such as explaining interactions between parameters or default behaviors.

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 as 'Session management - list, start, stop, or replay sessions', which is a specific verb+resource combination. It distinguishes this tool from most siblings that handle different operations (e.g., memvid_create, memvid_delete, memvid_view), though it doesn't explicitly differentiate from tools like memvid_state or memvid_status that might also relate to session states.

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 no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., when a session must be active), exclusions, or comparisons to sibling tools like memvid_state or memvid_status that might overlap in functionality. Usage is implied through the listed actions but not explicitly defined.

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