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Security audit

HyperNatt Terminal

Security checks for vulnerabilities and agentic risk

Overview

This is a disclosed remote MCP onboarding skill for crypto market data and swap routing, with no local execution, filesystem access, or hidden persistence in the inspected artifact.

Before installing, confirm you are comfortable connecting an agent to a remote crypto MCP and with any x402 USDC payments or user-signed swap routes. Do not provide private keys; use only host-approved wallet authorization rules.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (1)

Skill Enumeration

Medium
Category
Agent Snooping
Confidence
80% confidence
Finding

Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.

Content

Scanner excerpt · SKILL.md (reported line 70)May include surrounding context.

md
| Server card | https://hypernatt.com/.well-known/mcp/server-card.json |
| Source | https://github.com/DIALLOUBE-RESEARCH/hypernatt-terminal |
| Security | https://github.com/DIALLOUBE-RESEARCH/hypernatt-terminal/blob/main/SECURITY.md |
| Trading-first skill | https://github.com/DIALLOUBE-RESEARCH/hypernatt-terminal/blob/main/skills/hypernatt-liq-radar/SKILL.md |

## Tool surface (6 only)

Static analysis

No suspicious patterns detected.