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Security audit

Tavily

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent Tavily integration guide that uses external Tavily APIs for web search and extraction, with no hidden persistence, destructive behavior, or unrelated data handling found.

Install this only if you are comfortable with your agent sending search queries, target URLs, and extracted web-research context to Tavily. Store the Tavily API key securely, preferably through environment variables or the host platform's secret manager, and avoid sending private or sensitive internal URLs unless your Tavily account and data-handling terms are appropriate for that use.

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
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (6)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
94% confidence
Finding

The skill documents and demonstrates network-capable operations against external Tavily APIs, but it does not declare an explicit tool scope such as permissions or allowed-tools. In an agent environment, this creates an authorization gap where a reviewer or runtime may not have clear policy boundaries for outbound network use, increasing the risk of unintended data exfiltration or unauthorized web access.

Content

No source excerpt is available for this finding.

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/api_reference.md (reported line 7)May include surrounding context.

md
---

## 1. Search API (`POST https://api.tavily.com/search`)

| Parameter | Type | Required | Default | Allowed Values / Ranges |
| :--- | :--- | :--- | :--- | :--- |

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/api_reference.md (reported line 25)May include surrounding context.

md
---

## 1. Search API (`POST https://api.tavily.com/search`)

| Parameter | Type | Required | Default | Allowed Values / Ranges |
| :--- | :--- | :--- | :--- | :--- |

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/api_reference.md (reported line 39)May include surrounding context.

md
---

## 1. Search API (`POST https://api.tavily.com/search`)

| Parameter | Type | Required | Default | Allowed Values / Ranges |
| :--- | :--- | :--- | :--- | :--- |

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/api_reference.md (reported line 55)May include surrounding context.

md
---

## 1. Search API (`POST https://api.tavily.com/search`)

| Parameter | Type | Required | Default | Allowed Values / Ranges |
| :--- | :--- | :--- | :--- | :--- |

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/api_reference.md (reported line 69)May include surrounding context.

md
---

## 1. Search API (`POST https://api.tavily.com/search`)

| Parameter | Type | Required | Default | Allowed Values / Ranges |
| :--- | :--- | :--- | :--- | :--- |