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by zscaler

zins_get_firewall_by_action

Read-only

Retrieve Zscaler firewall traffic analytics by action (allow/block) to analyze blocked traffic volume and evaluate firewall policy effectiveness.

Instructions

Provides Zero Trust Firewall traffic analytics by action (allow/block), including blocked traffic volume and firewall policy effectiveness.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
start_days_agoNoDays ago for start. Default: 9 (7-day interval). API needs 7 or 14 day intervals.
end_days_agoNoDays ago for end. Default: 2. Interval = start - end must be 7 or 14.
start_timeNoALTERNATIVE: Start time as Unix epoch in MILLISECONDS.
end_timeNoALTERNATIVE: End time as Unix epoch in MILLISECONDS.
limitNoMaximum number of action entries to return (1-1000).

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

Annotations already declare readOnlyHint=true, so the read-only nature is clear. The description adds no additional behavioral traits like pagination, rate limits, or data freshness. It does not contradict annotations but provides minimal extra transparency.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Description is a single, front-loaded sentence with no redundancy. It could benefit from slightly more structure or details, but it is efficient and to the point.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The tool has an output schema, so return values need not be explained. The description covers the basic purpose but lacks context on data range constraints or what 'blocked traffic volume' means. For a tool with 5 optional parameters, the description is somewhat minimal.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with parameter descriptions. The tool description does not add any parameter-specific meaning beyond the schema, so baseline of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool provides Zero Trust Firewall traffic analytics by action (allow/block), including blocked traffic volume and policy effectiveness. The name and description align, and it distinguishes from siblings like zins_get_firewall_by_location by specifying the grouping dimension.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool vs. alternatives. The sibling list includes many similar analytics tools, but the description does not mention any conditions or exclusions, leaving the agent to infer usage from the name alone.

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

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