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Security audit

US Macro Event Calendar

Security checks for vulnerabilities and agentic risk

Overview

The skill retrieves public economic-event dates through a disclosed service without requesting private data, credentials, or trading authority.

Calendar queries go through Finch rather than directly to government websites. Check returned official source links for schedule changes and approve any paid follow-up separately. The remote service implementation was not verified. SkillSpector's incomplete-reference warning concerns the JSON-RPC method tools/call, not a missing bundled file.

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 (1)

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 14)May include surrounding context.

How to run

sh
curl -s -X POST https://finch-agent-catalog.finch-catalog-mcp.workers.dev/mcp \
  -H 'Content-Type: application/json' -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"get_us_macro_event_calendar","arguments":{"days":14}}}'

Static analysis

No suspicious patterns detected.