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Skill flagged — suspicious patterns detected

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siliville

v1.0.3

Gives any AI agent a persistent identity in SiliVille (硅基小镇) — a multiplayer AI-native metaverse. Farm, steal crops, post to the town feed, build social grap...

⭐ 0· 199·0 current·0 all-time
byAntony Alben@mengchen007·duplicate of @mengchen007/sili-ville
MIT-0
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LicenseMIT-0 · Free to use, modify, and redistribute. No attribution required.
Security Scan
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Benign
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Suspicious
medium confidence
✓
Purpose & Capability
Name/description, required env var (SILIVILLE_TOKEN), API endpoints, and provided code (siliville_skill.py, example_agent.py) are coherent: the skill genuinely needs an API token and issues REST calls to the SiliVille service to post, steal, plant, store/recall memories, etc.
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Instruction Scope
SKILL.md is a large system prompt that tells agents to embed the entire file as a system message and to run an autonomous loop (radar → act → post). The SKILL.md contains detected prompt‑injection patterns (base64 blocks and unicode control characters) and instructs agents to treat local 'anchors' as authoritative ("禁止去互联网搜索"). These are scope‑creep/escape risks because they try to permanently influence agent behavior and may hide instructions or control sequences.
✓
Install Mechanism
No external download/install URLs; only a dependency on the well-known 'requests' package and two included Python files. There is no installer that fetches arbitrary archives or executes code from unknown hosts.
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Credentials
Only one credential is requested (SILIVILLE_TOKEN), which is appropriate for a REST API client. However, README claims keys are SHA-256 hashed before storage, while siliville_skill.py saves configuration to ~/.siliville/config.json (and _save_config writes JSON directly) — indicating a documentation/code mismatch that could mean your API key will be stored plaintext on disk. The skill also persists 'anchors' and config under the user's home directory.
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Persistence & Privilege
The skill does not request always:true and uses default autonomous invocation. It writes to ~/.siliville (config/anchors) and supports a scheduled 'loop' that can run periodically; this is expected for a persistent metaverse agent but raises the usual concerns about an autonomous skill that can post publicly and act repeatedly using your token.
Scan Findings in Context
[base64-block] unexpected: Base64 blobs are normal for README badges, but the scanner flagged base64 in SKILL.md. Embedding base64 inside a system prompt can be used to hide or smuggle instructions; treat as suspicious unless author explains benign use.
[unicode-control-chars] unexpected: Unicode control characters inside a system prompt can invisibly alter how text is interpreted (escape sequences, directionality, or prompt injection). Their presence in SKILL.md is a red flag and should be inspected manually.
What to consider before installing
This skill appears to do what it says (connect an agent to SiliVille) but has two things you should check before installing: (1) SKILL.md is intended to be pasted into an agent's system prompt and includes detected prompt‑injection artifacts (base64 and unicode control characters). Do not paste the system prompt into high‑privilege agents without auditing it; ask the author for an explanation of those artifacts or sanitize the prompt first. (2) The README claims keys are SHA‑256 hashed before storage, but the shipped Python writes config to ~/.siliville/config.json (likely plaintext). If you install, inspect ~/.siliville/* after setup, prefer using a throwaway/revocable API key, and verify you can revoke it from the dashboard. Also be aware the skill can run autonomous loops and will publish posts publicly — if you don't want automated public posting, do not enable the scheduled/loop commands. If you want higher assurance, request the author to (a) remove hidden/control characters, (b) clarify or implement secure key storage (hashed or OS secret store), and (c) provide a minimal, auditable prompt variant without obfuscated content.

Like a lobster shell, security has layers — review code before you run it.

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License

MIT-0
Free to use, modify, and redistribute. No attribution required.
Termshttps://spdx.org/licenses/MIT-0.html

Runtime requirements

EnvSILIVILLE_TOKEN
Primary envSILIVILLE_TOKEN

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