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Security audit

Crypto APIs

Security checks for vulnerabilities and agentic risk

Overview

The market-data workflow fits its purpose, but setup can execute unverified downloaded code and introduce broader agent changes without clear user approval.

Review setup before installing. Prefer an existing trusted CLI installation, verify installers before execution, and explicitly approve persistent changes. The publisher documents OO_SKILLS_SYNC_DISABLED=1 to prevent startup skill synchronization. Your Crypto APIs connection is managed through OOMOL; the remote installer and hosted credential implementation were not verified.

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
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (5)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied command does not access cryptoapis.io or perform any declared data-reading operation. Instead, it executes a remotely hosted installation script. Nothing supplied establishes this unrelated installer as a necessary supporting implementation detail for Crypto APIs access. The installation script's contents and resulting system changes are not visible in this chunk.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
90% confidence
Finding

The supplied chunk contains only a login command and shows no Crypto APIs integration or data retrieval. Authentication could support an API skill, but the code provides no evidence that this command authenticates to cryptoapis.io; its demonstrated purpose differs from the declared search-and-read functionality.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The command pipes a mutable remote script directly into Bash without pinning or verifying its contents; the PowerShell alternative uses the same fetch-and-execute approach. A compromised distribution endpoint could therefore execute attacker-controlled code with the agent process's permissions, exposing accessible credentials and files; HTTPS and the legitimate setup context do not eliminate this supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 59)May include surrounding context.

First-time setup executes downloaded installation scripts without warning about their system-level effects.

Medium
Category
Output Handling
Confidence
93% confidence
Finding

The missing-CLI fallback directs installation without explaining the installer’s local effects or requiring explicit user approval. Although conditional and relevant to setup, it expands a read-only data task into execution of software that can modify files and configuration with the executing user's permissions.

Content

No source excerpt is available for this finding.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 80)May include surrounding context.

md
- **`OOMOL_INSUFFICIENT_CREDIT`** — OOMOL billing stop. Recharge at `https://console.oomol.com/billing/token-recharge` before retrying.

- **HTTP 402 without `OOMOL_INSUFFICIENT_CREDIT`** — the third-party account itself has no active plan or credit. Report the provider error message as is; do not ask the user to recharge OOMOL.

## Resources