plur_session_start

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

The description uses 'inject relevant engrams,' implying a write operation, but annotations declare readOnlyHint=true. This contradiction misleads about the tool's behavioral safety. Additionally, no other behavioral traits (e.g., side effects on persistent state) are disclosed.

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 at two sentences, with the purpose front-loaded. Every sentence is necessary and efficient.

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 session-start tool with 3 parameters and no output schema, the description is too minimal. It lacks details on session lifecycle, idempotency (idempotentHint=false), and interaction with other tools like plur_inject. More context is needed for complete understanding.

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 all parameters. The description adds no extra meaning beyond the schema. Baseline 3 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 clearly states the tool's action ('Start a session — inject relevant engrams') and the resource ('session'). It distinguishes from siblings like plur_session_end by specifying it is for starting a session, called at the beginning.

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 says 'Call at the beginning of every session,' providing clear when-to-use guidance. It does not mention exclusions or alternatives, but the context is well-defined by the sibling tool plur_session_end.

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