Generate Node VRF Keys

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

Annotations declare readOnlyHint=false, idempotentHint=false, destructiveHint=false, so the agent knows this is a non-idempotent write that creates new files. The description adds that these are output paths (i.e., files are written), which is useful, but doesn't state whether existing files are overwritten or what happens on failure.

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?

One-sentence purpose plus a two-item Args list. Front-loaded and compact, though the Args section is redundant with the schema.

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?

Covers purpose and parameters, but for a file-writing key generation tool with no output schema, it omits return value, file overwrite behavior, and permissions or environment requirements. Annotations cover the safety profile, so the gap is moderate rather than severe.

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 both parameters are already fully documented in the schema. The description's Args section merely duplicates the schema descriptions verbatim, adding no new semantic value.

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 (Generate) and resource (VRF key pair) with the target scope (block-producing node). Distinguishable from siblings like cardano_stake_pool_vrf_key_gen and cardano_node_key_gen_kes by the node/VRF combination.

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?

No guidance on when to use this vs the many sibling key-gen tools (cardano_node_key_gen, cardano_node_key_gen_kes, cardano_stake_pool_vrf_key_gen). The 'block-producing node' hint implies context but no explicit when/when-not or alternatives are named.

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