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Security audit

Etherscan

Security checks for vulnerabilities and agentic risk

Overview

This skill is a documentation-only helper for querying Etherscan-style APIs and the external network use is disclosed and aligned with that purpose.

Install only if you intend to let the agent query Etherscan-compatible APIs. Provide an Etherscan API key deliberately, keep it in an environment variable or secret store, and make sure generated URLs or logs redact the key before sharing results.

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 (8)

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 12)May include surrounding context.

md
# Network Map (Etherscan V2)

Unified API base URL:
- `https://api.etherscan.io/v2/api`

Use `chainid` to select network:

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 38)May include surrounding context.

md
# Network Map (Etherscan V2)

Unified API base URL:
- `https://api.etherscan.io/v2/api`

Use `chainid` to select network:

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 64)May include surrounding context.

md
# Network Map (Etherscan V2)

Unified API base URL:
- `https://api.etherscan.io/v2/api`

Use `chainid` to select network:

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 69)May include surrounding context.

md
# Network Map (Etherscan V2)

Unified API base URL:
- `https://api.etherscan.io/v2/api`

Use `chainid` to select network:

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 74)May include surrounding context.

md
# Network Map (Etherscan V2)

Unified API base URL:
- `https://api.etherscan.io/v2/api`

Use `chainid` to select network:

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 79)May include surrounding context.

md
# Network Map (Etherscan V2)

Unified API base URL:
- `https://api.etherscan.io/v2/api`

Use `chainid` to select network:

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 · references/endpoint-cheatsheet.md (reported line 4)May include surrounding context.

md
# Network Map (Etherscan V2)

Unified API base URL:
- `https://api.etherscan.io/v2/api`

Use `chainid` to select network:

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 · references/network-map.md (reported line 4)May include surrounding context.

md
# Network Map (Etherscan V2)

Unified API base URL:
- `https://api.etherscan.io/v2/api`

Use `chainid` to select network:

Static analysis

No suspicious patterns detected.