knowledge_circuit

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

With no annotations, the description carries the full burden and does well: it declares read-only operation, states that only owner-shared areas are exposed, and emphasizes that nothing is written and nothing outlives the connection (session-scoped lifetime). It stops short of disclosing error behavior, token failure handling, or rate limits, which keeps it from a 5.

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 key action is front-loaded, which is good, but substantial space is spent on atmospheric phrasing ('the line on each row', 'walk them the same way') that adds tone rather than usable instruction. The read-only and ephemerality points earn their place; the metaphorical padding does not.

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 four-parameter tool with no annotations and no output schema, the description covers the essentials an agent needs: it is read-only, session-scoped, exposes only shared areas, and describes what appears on each row. It lacks any note on failure modes or the difference between the list and open operations, but overall it is sufficient to invoke 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 description coverage is 75%, so the schema already documents url, name, and token. The description only loosely implies the open/list/close lifecycle in prose ('for the length of this connection') and adds no operation-specific syntax or defaults beyond what the schema states, so it lands at the baseline for high coverage.

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 opening sentence states a specific verb and resource ('Read another RouteMind for the length of this connection'), so the core action is discoverable. However, the purpose is buried under extended metaphor ('borrowing a reader's view', 'walk them the same way'), and it never distinguishes itself from the sibling tools knowledge_read or knowledge_table it explicitly alludes to.

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?

It gives real usage context: supply the address and token someone handed you to view a remote backbone, and it contrasts this with 'linking two backbones' (a standing committed arrangement). That contrast is against a feature, not against the sibling tools, so an agent still has no explicit rule for choosing knowledge_circuit over knowledge_read or knowledge_table.

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