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Security audit

CoinMeta-Skill

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward CoinMeta crypto news API helper that discloses its external API calls and required API key.

Install this only if you want your agent to query CoinMeta for crypto news and articles. Your COINMETA_API_KEY will be sent to CoinMeta when the documented API calls are made, and the broad 'market updates' trigger may be worth tightening if you only want explicit CoinMeta or crypto-news requests to use this skill.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (11)

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 10)May include surrounding context.

md
primaryEnv: COINMETA_API_KEY
    requires:
      bins:
        - curl
      env:
        - COINMETA_API_KEY
    os:

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 36)May include surrounding context.

Newsflash List

Endpoint: POST https://api.coinmeta.com/open/v1/newsflash/list

curl example:

bash

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 44)May include surrounding context.

Newsflash List

Endpoint: POST https://api.coinmeta.com/open/v1/newsflash/list

curl example:

bash

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 105)May include surrounding context.

Newsflash List

Endpoint: POST https://api.coinmeta.com/open/v1/newsflash/list

curl example:

bash

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 113)May include surrounding context.

Newsflash List

Endpoint: POST https://api.coinmeta.com/open/v1/newsflash/list

curl example:

bash

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 135)May include surrounding context.

Newsflash List

Endpoint: POST https://api.coinmeta.com/open/v1/newsflash/list

curl example:

bash

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 143)May include surrounding context.

Newsflash List

Endpoint: POST https://api.coinmeta.com/open/v1/newsflash/list

curl example:

bash

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 69)May include surrounding context.

Endpoint: POST https://www.coinmeta.com/open/v1/newsflash/search

bash
curl -s -X POST -H "Accept:*/*" \
  -H "X-Api-Key: ${COINMETA_API_KEY}" \
  -H "Content-Type: application/json" \
  -d '{"page":1,"size":10,"keyword":"btc"}' \

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 107)May include surrounding context.

Endpoint: POST https://api.coinmeta.com/open/v1/article/list

curl example:

bash
curl -s -X POST -H "Accept:*/*" \
  -H "X-Api-Key: ${COINMETA_API_KEY}" \

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 137)May include surrounding context.

Endpoint: POST https://api.coinmeta.com/open/v1/article/list

curl example:

bash
curl -s -X POST -H "Accept:*/*" \
  -H "X-Api-Key: ${COINMETA_API_KEY}" \

Vague Triggers

Low
Category
Not specified by scanner
Confidence
88% confidence
Finding

The manifest-style description lists trigger scenarios such as "crypto news" and especially "market updates," which are broad phrases that could overlap with ordinary user requests outside this specific API skill. The file does not provide exclusion conditions or clearer scope limits to distinguish when the skill should activate versus when a more general news or finance capability should handle the request.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.