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

Annotations already declare this is a non-destructive, idempotent, closed-world write, so the safety profile is covered. The description adds that the call is optional and why it matters, but says nothing about overwrite semantics for an existing path, whether the folder must already exist, or what failure looks like for a bad link_id. No contradiction with annotations.

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?

Four short sentences, front-loaded with the action and the target resource. The contents enumeration in sentence two earns its place by clarifying what the folder is, though "It helps Vari8ion find the files faster" is mildly promotional rather than operational.

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?

With only three well-documented parameters, full schema coverage, no output schema, and annotations carrying the safety and idempotency profile, the definition covers what an agent needs to call it. The only real gap is error/prerequisite behavior around link_id, which the schema partly mitigates.

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% – path, note, and link_id all carry their own explanations, including the link_id provenance from start_project_link. The description adds no meaning beyond that, so the baseline 3 applies.

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 gives a specific verb and resource ("Record where the bid and contract folder is") and then enumerates what that folder contains (tender/bid, signed contract, schedules, amendments), which implicitly separates it from siblings like set_drawings_folder or set_programme_folder. It does not explicitly name a sibling or state contrast, so it stops short of a 5.

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?

"Optional" plus the benefit "helps Vari8ion find the files faster" implies when this is worth calling, but there is no explicit when-to-use vs when-to-skip rule, no prerequisite chain (e.g. must be preceded by start_project_link), and no mention of alternatives for other folder types.

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