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zeek_query_dhcp

Query Zeek DHCP logs to find lease assignments, discover devices, and map hostnames to IPs for asset inventory and rogue device identification.

Instructions

Search Zeek DHCP logs for lease assignments, device discovery, and hostname-to-IP mapping. Useful for asset inventory and identifying rogue devices.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
macNoClient MAC address (partial match)
limitNoMax results
timeToNoEnd time (ISO 8601)
msgTypeNoDHCP message type (DISCOVER, OFFER, REQUEST, ACK, NAK, RELEASE, INFORM)
hostnameNoClient hostname (partial match)
timeFromNoStart time (ISO 8601)
clientAddrNoClient IP address
assignedAddrNoAssigned IP address
Behavior2/5

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

No annotations are provided, so the description bears full responsibility for behavioral disclosure. It does not mention read-only nature, destructive potential, authentication requirements, or any side effects. The description only states query intent, which is insufficient for a security-related log search tool.

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

Conciseness5/5

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

The description is two sentences with no filler. First sentence states purpose and scope; second provides practical use cases. Every sentence adds value, and the structure is front-loaded.

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?

With 8 parameters and no output schema, the description is somewhat complete but lacks details on result format, time range importance, or any limitations. It covers key use cases but does not fully compensate for the lack of output schema or detailed behavioral context.

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 descriptions for all 8 parameters. The description adds context about lease assignments and hostname-to-IP mapping, connecting to some parameters (mac, hostname, assignedAddr). However, it does not expand on parameter interactions, format expectations, or default behavior beyond schema.

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

Purpose4/5

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

Description clearly states the tool searches Zeek DHCP logs for specific items (lease assignments, device discovery, hostname-to-IP mapping) and mentions use cases (asset inventory, rogue devices). It distinguishes from siblings like zeek_query_dns but not explicitly from zeek_dhcp_asset_map, which could overlap.

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

Usage Guidelines3/5

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

The description mentions useful scenarios (asset inventory, rogue devices) but does not provide when-not-to-use or differentiate from similar tools like zeek_dhcp_asset_map. No explicit alternatives or exclusions are given.

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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