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Security audit

northcap-x402-api

Security checks for vulnerabilities and agentic risk

Overview

This skill is a clearly disclosed paid API wrapper for crypto trading signals, with financial and payment risks but no hidden execution or persistence in the artifact.

Install only if you intentionally want an agent to call a paid crypto-signal API. Confirm charges, wallet/payment details, API-key handling, and the financial risk of relying on trading signals before use; provider registration may create a public acceptance row tied to your wallet address.

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)

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
94% confidence
Finding

Line L28 contains Norwegian text ('begge formater virker') embedded in otherwise English usage instructions. This introduces a language inconsistency that may violate a language/locale policy because the skill does not offer user opt-in or explain that it is intended for Norwegian-speaking users.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.