ClawHub
Back to skill

Security audit

Yelp Business Data API - Search, Business Detail, Reviews

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent guide for calling Scavio's Yelp data API, with external API use and key requirements clearly disclosed.

Before installing, users should understand that Yelp search terms, locations, business IDs, and review filters will be sent to Scavio using their SCAVIO_API_KEY and may consume paid credits; avoid submitting sensitive private locations or queries unless comfortable with Scavio handling them.

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
70% 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 136)May include surrounding context.

md
HEADERS = {"Authorization": f"Bearer {API_KEY}"}

# 1. Always send location - a location-less search drifts between metros
found = requests.post(f"{BASE}/api/v1/yelp/search", headers=HEADERS,
    json={"term": "coffee", "location": "Austin, TX",
          "sort": "review_count", "price": [1, 2], "open_now": True}).json()

External Transmission

Medium
Category
Data Exfiltration
Confidence
70% 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.

md
row = found["data"]["businesses"][0]

# 2. Full business record - page 1 of the reviews rides along free
biz = requests.post(f"{BASE}/api/v1/yelp/business", headers=HEADERS,
    json={"business_id": row["alias"]}).json()["data"]

print(biz["rating"], biz["review_count"], biz["not_recommended_review_count"])

External Transmission

Medium
Category
Data Exfiltration
Confidence
70% 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 150)May include surrounding context.

md
first_page_reviews = biz["reviews"]

# 3. Page PAST it. Never ask for page 1 here - it is the same 2 credits twice.
more = requests.post(f"{BASE}/api/v1/yelp/reviews", headers=HEADERS,
    json={"business_id": row["alias"], "page": 2, "sort": "newest"}).json()["data"]

# 4. One-star reviews only: filtered_review_count is the count that matches

External Transmission

Medium
Category
Data Exfiltration
Confidence
70% 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 154)May include surrounding context.

md
first_page_reviews = biz["reviews"]

# 3. Page PAST it. Never ask for page 1 here - it is the same 2 credits twice.
more = requests.post(f"{BASE}/api/v1/yelp/reviews", headers=HEADERS,
    json={"business_id": row["alias"], "page": 2, "sort": "newest"}).json()["data"]

# 4. One-star reviews only: filtered_review_count is the count that matches

External Transmission

Medium
Category
Data Exfiltration
Confidence
70% 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 166)May include surrounding context.

md
first_page_reviews = biz["reviews"]

# 3. Page PAST it. Never ask for page 1 here - it is the same 2 credits twice.
more = requests.post(f"{BASE}/api/v1/yelp/reviews", headers=HEADERS,
    json={"business_id": row["alias"], "page": 2, "sort": "newest"}).json()["data"]

# 4. One-star reviews only: filtered_review_count is the count that matches