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

There are no annotations describing side effects, permissions, or idempotency. The phrase 'change receipt' hints that running the monitor may produce changes, but the tool's own effects on system state are not disclosed. The description does not state whether the operation is safe, reversible, or read-only.

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 a single sentence and is front-loaded with the primary action. It contains no redundant filler, though the phrase 'source- and hash-bound change receipt' adds jargon that may reduce immediate clarity. Overall, it is appropriately concise.

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?

The tool lacks an output schema, parameter descriptions, and any mention of error conditions or return format. The description's promise of a 'change receipt' is not elaborated, so the agent cannot predict the exact response or failure modes. This is not enough context for reliable invocation.

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?

The schema provides no descriptions for api_key or monitor_id, and the tool description only mentions 'a monitor' without explaining either parameter. There is no information about required formats, value constraints, or how the api_key should be supplied. With 0% schema description coverage, the description fails to clarify parameter semantics.

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 action ('run a monitor now') and the return value ('a source- and hash-bound change receipt'). It distinguishes the tool from siblings by focusing on immediate execution rather than creation, listing, offering, or preflight. Some jargon like 'source- and hash-bound' slightly obscures the purpose.

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 gives no explicit guidance on when to use this tool versus sibling tools such as fluxproof_create_monitor or fluxproof_list_changes. It does not explain whether this is for on-demand execution only or how it relates to preflight. The agent must infer the intended usage context.

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