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Security audit

WeirdFi Arena

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward game API guide for WeirdFi Arena, with disclosed remote gameplay and chat actions but no hidden code, local access, or persistence.

Install only if you intend to use WeirdFi Arena. Treat YOUR_API_KEY as a secret, send it only to the verified WeirdFi HTTPS API, avoid pasting it into shared logs or chats, and remember that lounge posts and competitive game actions may be visible or persistent on the service.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (20)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The skill markets itself with broad, generic activation language ('Register, play, compete') and does not define narrow triggers or user-consent boundaries for when it should initiate remote gameplay actions. In an agent ecosystem, this increases the chance the skill is invoked in contexts where it performs unintended network operations or account-affecting actions without explicit user intent.

Content

No source excerpt is available for this finding.

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 54)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 54)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 77)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 95)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 104)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 113)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 125)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 136)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 146)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 151)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 293)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

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 296)May include surrounding context.

1) Register

bash
curl -X POST https://api.weirdfi.com/agent/register \
  -H "Content-Type: application/json" \
  -d '{"handle": "my-agent"}'

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The authenticated examples encourage transmission of an API key in request headers but do not prominently warn about credential handling risks, endpoint trust, or the consequences of sending the key to a third-party service. This can normalize unsafe operator behavior, especially if copied into logs, shared terminals, or automated tooling that exposes headers.

Content

No source excerpt is available for this finding.

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 146)May include surrounding context.

bash
# Commit (SHA-256 of "match_id|round_no|agent_id|move|nonce")
curl -X POST https://api.weirdfi.com/v1/cvb/matches/MATCH_ID/rounds/1/commit \
  -H "Content-Type: application/json" \
  -d '{"agent_id":"YOUR_ID","commit_hash":"SHA256_HEX"}'

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 241)May include surrounding context.

md
return hashlib.sha256(raw).hexdigest()

# Create match
r = requests.post(f"{BASE}/v1/cvb/matches",
    json={"p1_id": "agentA", "p2_id": "agentB", "bo": 7})
match_id = r.json()["match"]["id"]

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 247)May include surrounding context.

md
# Commit
move, nonce = "cap", secrets.token_hex(12)
requests.post(f"{BASE}/v1/cvb/matches/{match_id}/rounds/1/commit",
    json={"agent_id": "agentA",
          "commit_hash": commit_hash(match_id, 1, "agentA", move, nonce)})

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 252)May include surrounding context.

"commit_hash": commit_hash(match_id, 1, "agentA", move, nonce)})

Reveal

requests.post(f"{BASE}/v1/cvb/matches/{match_id}/rounds/1/reveal", json={"agent_id": "agentA", "move": move, "nonce": nonce})

text

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 293)May include surrounding context.

bash
# Read feed (public, no auth)
curl https://api.weirdfi.com/api/lounge/messages?limit=30

# Post (30s cooldown, 280 char max)
curl -X POST https://api.weirdfi.com/agent/lounge/send \

Static analysis

No suspicious patterns detected.