Runtime Sentinel

What it does

When your agent uses it

• The user mentions security
• Prompt injection
• Suspicious behavior
• Credential leaks

Example prompts

• “is this skill safe”
• “audit my skills”
• “check for threats”
• “/runtime-sentinel”

Requirements

• A credential in SENTINEL_VT_KEY
• Compatibility (from SKILL.md): {"binaries":["sentinel"],"env":["SENTINEL_WALLET","SENTINEL_RPC","SENTINEL_VT_KEY"],"source":"https://github.com/spaceman420urdog-afk/runtime-sentinel"}

Workflow steps

5 steps, taken from the step headings in SKILL.md.

1. 1First-time setup
2. 2On-demand audit (free)
3. 3Single skill check before install (free)
4. 4Premium features via x402
5. 5Daemon mode (premium)

What it can do on your machine

Read from SKILL.md and the folder at commit e5199b5. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Ships 8 files in scripts/ (Rust, from the files we listed), which the agent can run.

  Shell commands in SKILL.md call:

  • cargo

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  {"binaries":["sentinel"],"env":["SENTINEL_WALLET","SENTINEL_RPC","SENTINEL_VT_KEY"],"source":"https://github.com/spaceman420urdog-afk/runtime-sentinel"}

  From compatibility in the SKILL.md frontmatter.

Context cost

Runtime Sentinel loads about 1.7k tokens when it runs, and up to ~4.9k if it reads all its reference files. Until then it costs about 222 tokens; SKILL.md has 551 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~222

When it runs · the whole SKILL.md, loaded when a task matches

~1.7k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~4.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from LeoYeAI/openclaw-master-skills at commit e5199b5, republished under its MIT licence (© LeoYeAI). 551 words, ~1,690 tokens.

name

runtime-sentinel

description

Runtime security guardian for OpenClaw agents. Use this skill whenever the user mentions security, skill safety, prompt injection, malware, suspicious behavior, credential leaks, network monitoring, skill integrity, or the ClawHavoc attack. Also trigger for phrases like "is this skill safe", "audit my skills", "check for threats", "my agent is acting weird", "scan for malware", "protect my agent", or any concern about what installed skills are doing at runtime. runtime-sentinel provides five active defenses: skill integrity hashing, prompt injection detection, credential exposure auditing, network egress monitoring, and process anomaly detection. Free tier covers hashing and basic injection scanning. Premium features (continuous daemon, egress monitoring, process anomaly detection) are gated via x402 USDC micropayments on Base — no account or API key required.

compatibility

{"binaries":["sentinel"],"env":["SENTINEL_WALLET","SENTINEL_RPC","SENTINEL_VT_KEY"],"source":"https://github.com/spaceman420urdog-afk/runtime-sentinel"}

# One-shot audit of all installed skills (free)
sentinel audit

# Continuous guardian daemon (premium — will prompt for x402 payment)
sentinel daemon start

# Scan a single skill before installing
sentinel check <skill-path-or-clawhub-id>

# Install the binary (built from scripts/src/)
cargo install --path scripts/ --bin sentinel

# Verify installation and print wallet address
sentinel setup

sentinel audit [--path ~/.openclaw/skills]

sentinel check <skill-directory-or-clawhub-id>

sentinel daemon start    # runs in foreground, writes to ~/.sentinel/daemon.log
# Run in background from your shell if needed:
#   sentinel daemon start > ~/.sentinel/daemon.log 2>&1 &
#   disown
sentinel daemon status
sentinel daemon stop
sentinel daemon logs     # tail the audit log

sentinel wallet show      # print address and USDC balance
sentinel wallet fund      # print QR code and address to send USDC
sentinel wallet export    # export mnemonic for backup (handle carefully)
sentinel wallet recover   # restore from mnemonic on a new machine

© LeoYeAI, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 18 other files (scripts, references) in skills/runtime-sentinel of LeoYeAI/openclaw-master-skills.

• SKILL.md
• .clawhub/origin.json
• LICENSE.md
• README.md
• _meta.json
• references/binary-build.md
• references/threat-model.md
• references/x402-payment.md
• scripts/Cargo.toml
• scripts/rust-toolchain.toml
• scripts/src/audit.rs
• scripts/src/daemon.rs
• scripts/src/egress.rs
• scripts/src/injection.rs
• scripts/src/main.rs
• scripts/src/patterns/mod.rs
• … and 3 more

Open the folder on GitHubat commit e5199b5