get_session_brief

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

No annotations provided, so description carries the burden. It accurately describes the tool as a read-like operation (generates a brief) and lists what it returns. Does not disclose potential side effects or auth needs, but the nature of the tool implies it is safe and non-destructive. No contradiction with any implicit annotation.

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 concise and well-structured: first sentence states the action, second series describes returns, then usage instructions. Every sentence adds value, and the most critical information (when to use) is front-loaded.

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 low complexity (single optional param, no output schema, no annotations), the description is complete. It explains purpose, return components, usage guidelines, and parameter meaning. No significant gaps remain for selecting and invoking the tool correctly.

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 coverage is 0%, but the description adds meaning to the single optional parameter: 'optional absolute path to the target repository.' This clarifies usage beyond the bare schema definition (anyOf string/null). The description compensates well for the lack of schema descriptions.

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?

Clearly states it generates a session bootstrap brief for agent orientation, listing specific return components (architecture summary, entry points, recent decisions, etc.). Distinguishes from siblings like get_agent_bootstrap and get_session_history by emphasizing session start usage and project map focus.

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 says 'call this at the START of a session on an unfamiliar project, or when resuming after a long break' and includes 'Do NOT call this repeatedly; call once at session start only.' Provides a comparison to alternatives: 'faster than reading files or running grep.'

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