ClawHub
Back to skill

Security audit

MERCATOR Entity Evidence

Security checks for vulnerabilities and agentic risk

Overview

This skill is a clearly disclosed paid company-evidence lookup that sends company lookup inputs to an external API, with payment risks stated plainly.

Install only if you are comfortable sending company names or domains to the Mercator endpoint and using an x402 payment flow. Prefer the free validate endpoint first, configure any wallet or X-PAYMENT mechanism with tight spending limits, and assume unresolved lookups may still cost $0.10 USDC until the documented defect is fixed.

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
  • 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)

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 28)May include surrounding context.

md
homepage: https://mercator-entity-evidence.fly.dev
    requires:
      bins:
        - curl
        - jq
credentials:
  - name: MERCATOR_BASE_URL

External Transmission

Medium
Category
Data Exfiltration
Confidence
95% confidence
Finding

The skill instructs the agent to POST company lookup inputs to a third-party endpoint and attach an X-PAYMENT header, which can trigger an on-chain payment. This creates real risk of unintended external data disclosure and paid requests, especially because the skill itself admits a known defect where unresolved/no-evidence cases may still be charged.

Content

Scanner excerpt · SKILL.md (reported line 73)May include surrounding context.

md
-d '{"domain":"lido.fi","fields":["legal_name","primary_domain"]}' | jq .

# Paid answer — $0.10 USDC on Base, x402.
curl -sS -X POST "$BASE/v1/entity-evidence" \
  -H 'content-type: application/json' \
  -H "X-PAYMENT: $X_PAYMENT" \
  -d '{"domain":"stripe.com","fields":["legal_name","headquarters","founded_year"]}' | jq .