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Security audit

Payment Term Negotiator

Security checks for vulnerabilities and agentic risk

Overview

This skill provides local, informational payment-term negotiation guidance without hidden access, external calls, transactions, or persistence.

This appears safe to install for informational negotiation guidance. Users should treat its financial suggestions as templates, not professional financial or legal advice, and may want clearer language expectations because the documentation mixes English and Chinese examples.

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
Vulnerability Patterns
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • 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
Findings (4)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

These lines introduce a scenario and expected output entirely in Chinese, while the document otherwise uses English and does not state that multilingual output is optional or user-selected. This can violate language/locale policy because it implicitly forces a specific language for part of the skill without opt-in or justification.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Low
Category
Not specified by scanner
Confidence
88% confidence
Finding

The module docstring states 'No real code execution,' which contradicts the actual behavior: this script defines executable logic, parses user input, and runs as a CLI entrypoint under main. While it does not execute arbitrary commands or perform transactions, the wording actively misdescribes what the code does.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
91% confidence
Finding

The comment on L110 contains Chinese text ("其他skill类似"), which introduces a language-specific element in the file without any indication that multilingual content is intentional or user-selected. Under the policy, forcing or introducing a specific language without opt-in can be a locale/language policy issue.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
95% confidence
Finding

The manifest explicitly sets the skill language to "en", which imposes a specific language choice. Under the policy rules, locale or language constraints should either be user-selectable or clearly justified; neither is present here.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.