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schwarztim

theHarvester MCP Server

by schwarztim

theharvester_full_recon

Perform comprehensive domain reconnaissance by aggregating data from all sources, delivering complete results including emails, subdomains, and more.

Instructions

Comprehensive reconnaissance using all available sources and features. Takes longer but provides the most complete results.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
domainYesTarget domain for full reconnaissance
output_fileNoBase filename to save results (will create .json and .xml files)
Behavior2/5

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

No annotations are provided, so the description must cover behavioral traits. It mentions it takes longer and provides complete results, but lacks details on safety (e.g., read-only nature), authentication needs, or other side effects.

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 only two sentences long, front-loading the core purpose and adding a key trade-off about time versus completeness. Every sentence is valuable.

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?

Given the tool's complexity and the presence of sibling tools, the description is adequate but does not explain return values (no output schema) or how it differs from each sibling. It leaves some ambiguity.

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% and both parameters have clear descriptions. The description does not add extra meaning beyond what the schema already provides, so baseline score 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 performs comprehensive reconnaissance using all sources and features, distinguishing it from siblings like theharvester_search which are likely more targeted.

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 implies usage for complete results when time allows ('takes longer'), but does not explicitly state when not to use it or mention alternatives among the sibling tools.

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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