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Security audit

Gitbeacon

Security checks for vulnerabilities and agentic risk

Overview

The skill is a documentation-only API integration for GitHub trend data, with disclosed free and paid endpoints and no hidden local execution.

Before using paid routes, review the x402 payment flow and only provide a low-balance payment wallet or private key when you intentionally want the agent to spend USDC on Base. Free endpoints can be used without accounts, API keys, or payment.

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 (5)

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 37)May include surrounding context.

| GET | /v1/digests/latest | 5/min | Most recent completed daily digest, full fields: fullAnalysis, notableProjects, emergingTools, language trends, volume metrics |

bash
curl https://api.gitbeacon.dev/v1/digests/latest

Paid endpoints (x402 V2, USDC on Base only, per-call)

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 62)May include surrounding context.

| GET | /v1/digests/latest | 5/min | Most recent completed daily digest, full fields: fullAnalysis, notableProjects, emergingTools, language trends, volume metrics |

bash
curl https://api.gitbeacon.dev/v1/digests/latest

Paid endpoints (x402 V2, USDC on Base only, per-call)

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 80)May include surrounding context.

| GET | /v1/digests/latest | 5/min | Most recent completed daily digest, full fields: fullAnalysis, notableProjects, emergingTools, language trends, volume metrics |

bash
curl https://api.gitbeacon.dev/v1/digests/latest

Paid endpoints (x402 V2, USDC on Base only, per-call)

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 86)May include surrounding context.

| GET | /v1/digests/latest | 5/min | Most recent completed daily digest, full fields: fullAnalysis, notableProjects, emergingTools, language trends, volume metrics |

bash
curl https://api.gitbeacon.dev/v1/digests/latest

Paid endpoints (x402 V2, USDC on Base only, per-call)

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 108)May include surrounding context.

| GET | /v1/digests/latest | 5/min | Most recent completed daily digest, full fields: fullAnalysis, notableProjects, emergingTools, language trends, volume metrics |

bash
curl https://api.gitbeacon.dev/v1/digests/latest

Paid endpoints (x402 V2, USDC on Base only, per-call)