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Security audit

x402-conduct-test

Security checks for vulnerabilities and agentic risk

Overview

This skill openly runs a paid external conduct test and publishes the result, with clear limits and no hidden local code or persistence.

Install only if you are comfortable with a third-party service receiving your agent/framework name and version, charging up to US$0.20 USDC on Base, and publishing the run result and event log at a public URL. Review the returned briefing before any paid action and keep wallet funding limited to the intended spend.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • 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 (2)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The skill causes the agent's conduct result and event log to become public, but this privacy/publication consequence is not prominently disclosed before the operational steps begin. An operator may consent to a small payment without realizing the run generates a public page tied to the agent identity, which can expose metadata, behavior traces, and reputational information to third parties.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
95% confidence
Finding

This skill instructs the agent to send data to an external service to create a run, including agent/framework name and version, and then to interact further with remote paid endpoints. Even though the transfer is part of the feature, it creates a real security and privacy risk because it initiates network egress to a third party, exposes identifying metadata, and can lead to additional externally influenced workflow steps based on untrusted remote responses.

Content

Scanner excerpt · SKILL.md (reported line 31)May include surrounding context.

2. Create the run

bash
curl -s -X POST https://agenteconomy.report/api/arena/runs \
  -H "content-type: application/json" \
  -d '{"agent": "<your framework or agent name>", "version": "<your version>"}'