mizan

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

With no annotations present, the description carries the behavioral disclosure burden. It reveals that the tool is free, returns one of four specific verdicts, and bases results on Mizan's own paid measurements, implying a read-only lookup of historical data rather than a live transaction. It does not detail rate limits or auth requirements, but those are less critical for a simple pre-payment check.

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 three short sentences with no wasted words. It front-loads the cost ('Free'), states the output classes, explains the data source, and gives a direct usage instruction. Every sentence earns its place.

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 description adequately covers what the tool does, what it returns, and when to use it, even without an output schema or annotations. It leaves minor ambiguity around the exact meaning of the Italian verdicts and how to handle calls where neither url nor host is provided, but these are small gaps for a low-complexity 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%, so the baseline applies. The description adds a little context by framing url versus host as 'endpoint or operator,' but the schema already explains both parameters adequately. No additional parameter semantics are needed.

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 identifies the tool as a pre-payment check for x402 endpoints or operators, stating a specific outcome: returns evita / attenzione / ok / non-valutata. This distinguishes it from sibling tools like mizan_coverage and mizan_report by emphasizing the 'check before payment' behavior rather than coverage or reporting.

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 last sentence gives explicit when-to-use guidance: 'Call this before any x402 payment.' It does not explicitly mention alternatives or when not to use sibling tools, but the use context is clear and actionable.

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

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

With no annotations, the description carries the behavioral disclosure burden. It mentions that the tool is 'Free' and lists the data points it exposes, which strongly implies a read-only informational operation. However, it does not explicitly state absence of side effects, data freshness semantics, or any access requirements.

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 two short sentences with no filler. The 'Free' qualifier is front-loaded, and the remainder is a compact list of concrete metrics, making it easy to scan.

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 zero-parameter informational tool with no output schema, the description is sufficient: it states cost, enumerates the reported metrics, and gives the temporal detail about the last survey. An agent can confidently invoke this tool without further context.

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 tool has zero parameters, so the baseline is 4. The description adds meaningful context about what the parameterless call returns, which fully removes invocation ambiguity.

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 identifies what the tool reports: counts of endpoints on file, bought endpoints, charge-without-delivery behavior, and last survey date. It lacks an explicit verb like 'get' or 'list,' but the resource and output metrics are specific enough. It does not explicitly differentiate itself from sibling tools, though the 'coverage' name and title help.

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 is given about when to use this tool versus mizan_check or mizan_report. The description implies it is a summary/coverage status tool, but there are no stated conditions, exclusions, or references to alternatives.

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

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 helpfully discloses that the tool itself costs nothing and that it only explains rather than executes a purchase. However, it does not mention other behavioral aspects such as required permissions, output format, or failure behaviors.

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 concise sentence that front-loads the main purpose and adds one valuable behavioral note about cost. Every clause earns its place with no redundant wording.

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 simple one-parameter informational tool with no output schema, the description covers what the tool does, what input is expected, and an important financial nuance. It is missing only explicit sibling differentiation to be fully complete.

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%, with the sole parameter 'host' described as 'Operator hostname.' The description adds merely the context that this host corresponds to 'a given operator,' which is marginal beyond what the schema already provides.

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 a specific verb and resource: it explains the evidence behind a verdict for a given operator and how to buy the report over x402. It is not a tautology and gives a concrete sense of the tool's function, though it does not explicitly distinguish itself from mizan_check or mizan_coverage.

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 implies this tool is for understanding report contents and purchase instructions, but it offers no explicit guidance about when to choose this tool over mizan_check or mizan_coverage. It also does not state any exclusions or alternative conditions.

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