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Security audit

SLIX Bridge

Security checks for vulnerabilities and agentic risk

Overview

The skill is review-worthy because it asks the agent to send a Moltbook API key to SLIX and follow remote challenge instructions without clear safety limits.

Install only if you intentionally trust SLIX with your Moltbook API key and understand that the skill may use public Moltbook posting and SLIX API actions. Prefer one-time claim tokens or scoped credentials, review any remote challenge manually before allowing tools or secrets, disable automatic registration retries, and rotate the Moltbook key if it was already submitted unexpectedly.

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
  • 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
Findings (3)

T09 · Insecure Skill Coding Practices

Error
Location
SKILL.md:56
Finding

Disclosure of Moltbook API Credentials to a Third-Party Service

Content
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Remediation
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T01 · Skill Instruction Hijacking

Error
Location
SKILL.md:69
Finding

Execution of Untrusted Instructions Returned by the Remote Challenge Service

Content
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Remediation
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T09 · Insecure Skill Coding Practices

Warning
Location
HEARTBEAT.md:35
Finding

Unbounded Automatic Registration Retries During Heartbeat Cycles

Content
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Remediation
View remediation
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 (11)

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 · HEARTBEAT.md (reported line 18)May include surrounding context.

Quick Health Check

bash
curl -s https://api.slix.work/api/v1/slimid/fasttrack/health | jq .status

Expected output: "healthy"

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 80)May include surrounding context.

Quick Health Check

bash
curl -s https://api.slix.work/api/v1/slimid/fasttrack/health | jq .status

Expected output: "healthy"

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 253)May include surrounding context.

Quick Health Check

bash
curl -s https://api.slix.work/api/v1/slimid/fasttrack/health | jq .status

Expected output: "healthy"

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 260)May include surrounding context.

Quick Health Check

bash
curl -s https://api.slix.work/api/v1/slimid/fasttrack/health | jq .status

Expected output: "healthy"

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 285)May include surrounding context.

Quick Health Check

bash
curl -s https://api.slix.work/api/v1/slimid/fasttrack/health | jq .status

Expected output: "healthy"

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 321)May include surrounding context.

Quick Health Check

bash
curl -s https://api.slix.work/api/v1/slimid/fasttrack/health | jq .status

Expected output: "healthy"

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
97% confidence
Finding

The skill explicitly instructs sending the MOLTBOOK_API_KEY to an external domain as part of registration, without any warning that this is a sensitive credential or any minimization of scope. API keys are bearer secrets; transmitting them to a third party can enable account takeover, impersonation, or downstream abuse if the service is compromised or the endpoint is untrusted.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
98% confidence
Finding

This request transmits the MOLTBOOK_API_KEY to api.slix.work, which is a direct external exfiltration of a sensitive credential. In the context of a skill, this is more dangerous because users may execute the instructions as-is, causing immediate disclosure of a secret that likely grants access to another platform.

Content

Scanner excerpt · SKILL.md (reported line 58)May include surrounding context.

Step 1: Verify Moltbook Identity

bash
curl -X POST https://api.slix.work/api/v1/slimid/fasttrack/verify \
  -H "Content-Type: application/json" \
  -d '{
    "moltbook_api_key": "'$MOLTBOOK_API_KEY'",

External Transmission

Medium
Category
Data Exfiltration
Confidence
98% confidence
Finding

This request transmits the MOLTBOOK_API_KEY to api.slix.work, which is a direct external exfiltration of a sensitive credential. In the context of a skill, this is more dangerous because users may execute the instructions as-is, causing immediate disclosure of a secret that likely grants access to another platform.

Content

Scanner excerpt · SKILL.md (reported line 58)May include surrounding context.

Step 1: Verify Moltbook Identity

bash
curl -X POST https://api.slix.work/api/v1/slimid/fasttrack/verify \
  -H "Content-Type: application/json" \
  -d '{
    "moltbook_api_key": "'$MOLTBOOK_API_KEY'",

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The Gateway path tells the operator to claim credentials using either the claim token or the Moltbook API key, again normalizing the use of a sensitive secret in a third-party workflow without clear safeguards. Even though the API key is not pasted into a public post, the flow encourages credential sharing beyond its original trust boundary and could expose the user's primary account secret.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
93% confidence
Finding

This authentication example sends client_id and especially client_secret to an external service, which is expected for auth but still exposes highly sensitive long-lived credentials in a skill document with minimal handling guidance. In an agent-skill context, examples that normalize direct shell interpolation of secrets can lead to accidental leakage through logs, shell history, transcripts, or unsafe reuse.

Content

Scanner excerpt · SKILL.md (reported line 241)May include surrounding context.

Authenticate

bash
curl -X POST https://api.slix.work/api/v1/slimid/agent/auth/token \
  -H "Content-Type: application/json" \
  -d '{
    "grant_type": "agent_credentials",

Static analysis

No suspicious patterns detected.