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Security audit

Poyo Gemini 3 1 Flash Tts

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed PoYo text-to-speech helper that sends user-prepared speech requests to PoYo when explicitly used.

Install only if you intend to use PoYo for text-to-speech. Treat POYO_API_KEY as a secret, review payloads before submission, and avoid sending private scripts, sensitive customer text, callback URLs, task IDs, or generated audio links unless your policy allows it.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • 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 (12)

Hidden Instructions

High
Category
Prompt Injection
Confidence
60% confidence
Finding

Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 1)May include surrounding context.

md
---
name: poyo-gemini-3-1-flash-tts
description: Generate speech on PoYo / poyo.ai via `https://api.poyo.ai/api/generate/submit`; use for `gemini-3-1-flash-tts`, Gemini text-to-speech, style instructions, voice presets, language code, two-speaker dialogue, output formats, async task submission, callbacks, and task status retrieval.
metadata: {"openclaw":{"homepage":"https://poyo.ai/models/gemini-3-1-flash-tts","requires":{"bins":["curl"],"env":["POYO_API_KEY"]},"primaryEnv":"POYO_API_KEY"}}

Credential Access

High
Category
Privilege Escalation
Confidence
70% confidence
Finding

Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Content

Scanner excerpt · references/api.md (reported line 19)May include surrounding context.

Content-Type: application/json

text

Get API keys from <https://poyo.ai/dashboard/api-key>.

Recommended skill env var:

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 · references/api.md (reported line 60)May include surrounding context.

Single Speaker Example

bash
curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/api/generate/submit" \
  --header "Authorization: Bearer YOUR_API_KEY" \
  --header "Content-Type: application/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 · scripts/submit_gemini_3_1_flash_tts.sh (reported line 13)May include surrounding context.

sh
payload_file="$1"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/api/generate/submit" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

This code performs a network POST request and transmits the contents of a user-supplied JSON file along with an authorization header, but the script provides no confirmation prompt, user-facing notice, or inline comment/docstring explaining that data will be sent to an external service. For code files, outbound transmission of user or system data should have some visible disclosure unless already clearly documented in the skill description, which is not present in this file.

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 3)May include surrounding context.

md
payload_file="$1"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/api/generate/submit" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"${payload_file}"

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 · references/api.md (reported line 5)May include surrounding context.

md
payload_file="$1"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/api/generate/submit" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"${payload_file}"

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 · references/api.md (reported line 61)May include surrounding context.

md
payload_file="$1"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/api/generate/submit" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"${payload_file}"

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 · references/api.md (reported line 81)May include surrounding context.

md
payload_file="$1"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/api/generate/submit" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"${payload_file}"

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 · references/api.md (reported line 101)May include surrounding context.

md
payload_file="$1"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/api/generate/submit" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"${payload_file}"

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 · scripts/submit_gemini_3_1_flash_tts.sh (reported line 14)May include surrounding context.

sh
payload_file="$1"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/api/generate/submit" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"${payload_file}"

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
88% confidence
Finding

The script requires and uses POYO_API_KEY, which is a sensitive credential, but it does not include any visible warning, comment, or explanatory text indicating that the skill reads authentication material from the environment. Under the code-file criteria, access to sensitive environment variables should not be silent when there is no other disclosure in the file.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.