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arjun

HTTP parameter discovery suite. Finds hidden query/body parameters by inference - great before hunting injection.

parametersdiscoverypython
Stable IDtool:arjunLast updatedLast verifiedLegacy review pendingProvenanceSource-linked
Overview

Where arjun fits

HTTP parameter discovery suite. Finds hidden query/body parameters by inference - great before hunting injection.

Detection-first use

Start with the least intrusive template that can distinguish your hypothesis from a normal response. Preserve raw output and a negative control.

Install

Installation references

Install with pipxAuthorization required
pipx install arjun
Positive signal
Tool-specific output that supports the stated hypothesis.
Negative control
No result, or identical behavior against a known-safe control.
Intrusiveness
Review flags and target scope before execution.
Install with pipAuthorization required
pip install arjun
Positive signal
Tool-specific output that supports the stated hypothesis.
Negative control
No result, or identical behavior against a known-safe control.
Intrusiveness
Review flags and target scope before execution.
Test safely

Command templates

Find paramsAuthorization required

Populate placeholders only with assets that are explicitly in scope.

arjun -u {url} -oT {output}
Positive signal
Tool-specific output that supports the stated hypothesis.
Negative control
No result, or identical behavior against a known-safe control.
Intrusiveness
Review flags and target scope before execution.
Related

Continue the workflow

ToolparamspiderToolx8Toolffuf
Sources

Attribution and verification

Version history: normalized permanent page created 2026-08-20. Upstream activity and popularity are separate signals and do not establish tool safety.