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

No annotations are provided, so the description carries the full burden. It discloses what content the guide returns and that the read is preparatory, but says nothing about authentication, caching, rate limits, or whether the guide is versioned/live. Adequate but incomplete for an unannotated tool.

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?

Front-loaded sentence states purpose and timing efficiently, followed by a scannable per-circuit reference list. The URL list partially duplicates the schema enum, but the endpoints are new information not present in structured fields.

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 one required enum parameter fully documented and no output schema, the description sensibly summarizes the guide's contents so the agent knows what it will receive. Missing only peripheral operational details, which are minor for a single-parameter read tool.

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% and the enum already lists all seven circuit ids and aliases, so the schema does the heavy lifting. The description's URL list adds partial value by hinting at canonical endpoints, but covers only four of the seven accepted values and adds no alias-mapping detail the schema lacks.

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?

States a specific verb and resource: read the circuit-specific guide, and enumerates the contents (witness prep, signature modes, verification chain, payment config). It is clearly a read-only reference lookup, distinguishable from prove, though it never names its siblings explicitly.

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?

"Read ... before proof generation" gives a clear workflow trigger, which effectively routes the agent away from prove until this has been called. It does not state exclusions or mention get_supported_circuits as an alternative, so it falls short of a 5.

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