# arjun_parameter_discovery

A execute tool on the Hexstrike Ai MCP server.

Agent View of the PolicyLayer registry record for `arjun_parameter_discovery`. HTML page: https://policylayer.com/tools/hexstrike-ai/arjun-parameter-discovery

## Facts

- Tool: `arjun_parameter_discovery`
- Server: Hexstrike Ai (`0x4m4/hexstrike-ai`) — https://policylayer.com/tools/hexstrike-ai.md
- Homepage: https://github.com/0x4m4/hexstrike-ai
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "arjun_parameter_discovery",
    "arguments": {}
  }
}
```

## Why arjun_parameter_discovery is rated High

Arjun is a widely recognized offensive security tool that actively probes web applications to discover hidden HTTP parameters. Even though the description is empty, the tool name unambiguously refers to this specific tool. In the context of this server (HexStrike AI, focused on pentesting and offensive security), it executes active scanning/probing against targets, making it an Execute-category tool.

From the tool's own definition: "Tool name 'arjun_parameter_discovery' on a server explicitly designed for 'automated pentesting, vulnerability discovery, bug bounty automation, and offensive security'. Arjun is a well-known HTTP parameter discovery tool used in offensive security contexts."

## Use case

AI agents invoke arjun_parameter_discovery to trigger actions in Hexstrike Ai. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Hexstrike Ai:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "arjun_parameter_discovery": {
      "limits": [
        {
          "counter": "arjun_parameter_discovery_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Hexstrike Ai (149)

- `clear_cache` — Destructive — https://policylayer.com/tools/hexstrike-ai/clear-cache.md
- `delete_file` — Destructive — https://policylayer.com/tools/hexstrike-ai/delete-file.md
- `advanced_payload_generation` — Execute — https://policylayer.com/tools/hexstrike-ai/advanced-payload-generation.md
- `ai_generate_attack_suite` — Execute — https://policylayer.com/tools/hexstrike-ai/ai-generate-attack-suite.md
- `ai_generate_payload` — Execute — https://policylayer.com/tools/hexstrike-ai/ai-generate-payload.md
- `ai_reconnaissance_workflow` — Execute — https://policylayer.com/tools/hexstrike-ai/ai-reconnaissance-workflow.md
- `ai_test_payload` — Execute — https://policylayer.com/tools/hexstrike-ai/ai-test-payload.md
- `ai_vulnerability_assessment` — Execute — https://policylayer.com/tools/hexstrike-ai/ai-vulnerability-assessment.md
- `amass_scan` — Execute — https://policylayer.com/tools/hexstrike-ai/amass-scan.md
- `angr_symbolic_execution` — Execute — https://policylayer.com/tools/hexstrike-ai/angr-symbolic-execution.md
- `api_fuzzer` — Execute — https://policylayer.com/tools/hexstrike-ai/api-fuzzer.md
- `arjun_scan` — Execute — https://policylayer.com/tools/hexstrike-ai/arjun-scan.md
- `arp_scan_discovery` — Execute — https://policylayer.com/tools/hexstrike-ai/arp-scan-discovery.md
- `autorecon_comprehensive` — Execute — https://policylayer.com/tools/hexstrike-ai/autorecon-comprehensive.md
- `autorecon_scan` — Execute — https://policylayer.com/tools/hexstrike-ai/autorecon-scan.md
- `binwalk_analyze` — Execute — https://policylayer.com/tools/hexstrike-ai/binwalk-analyze.md
- `browser_agent_inspect` — Execute — https://policylayer.com/tools/hexstrike-ai/browser-agent-inspect.md
- `bugbounty_authentication_bypass_testing` — Execute — https://policylayer.com/tools/hexstrike-ai/bugbounty-authentication-bypass-testing.md
- `bugbounty_business_logic_testing` — Execute — https://policylayer.com/tools/hexstrike-ai/bugbounty-business-logic-testing.md
- `bugbounty_comprehensive_assessment` — Execute — https://policylayer.com/tools/hexstrike-ai/bugbounty-comprehensive-assessment.md
- `bugbounty_file_upload_testing` — Execute — https://policylayer.com/tools/hexstrike-ai/bugbounty-file-upload-testing.md
- `bugbounty_osint_gathering` — Execute — https://policylayer.com/tools/hexstrike-ai/bugbounty-osint-gathering.md
- `bugbounty_reconnaissance_workflow` — Execute — https://policylayer.com/tools/hexstrike-ai/bugbounty-reconnaissance-workflow.md
- `bugbounty_vulnerability_hunting` — Execute — https://policylayer.com/tools/hexstrike-ai/bugbounty-vulnerability-hunting.md
- `burpsuite_alternative_scan` — Execute — https://policylayer.com/tools/hexstrike-ai/burpsuite-alternative-scan.md
- `burpsuite_scan` — Execute — https://policylayer.com/tools/hexstrike-ai/burpsuite-scan.md
- `checkov_iac_scan` — Execute — https://policylayer.com/tools/hexstrike-ai/checkov-iac-scan.md
- `clair_vulnerability_scan` — Execute — https://policylayer.com/tools/hexstrike-ai/clair-vulnerability-scan.md
- `comprehensive_api_audit` — Execute — https://policylayer.com/tools/hexstrike-ai/comprehensive-api-audit.md
- `create_attack_chain_ai` — Execute — https://policylayer.com/tools/hexstrike-ai/create-attack-chain-ai.md
- …and 119 more: https://policylayer.com/tools/hexstrike-ai.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=hexstrike-ai · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/hexstrike-ai