Directory / Hermes Agent
Hermes Agent
Pattern-based approval for dangerous shell commands, a hardline blocklist that holds even in YOLO mode, and per-platform toolsets. Commands run on your host unless you pick a container backend.
Lock this down first
Use the docker backend for any gateway, keep approvals.mode on smart or manual, never set GATEWAY_ALLOW_ALL_USERS, and update to v0.22.4 or later if you use webhook routes.
Scorecard
| Criterion | Rating | Notes |
|---|---|---|
| Permission granularity | 2/3 | Toolsets decide which tools each platform, session or route gets, and approvals.deny blocks matching shell commands even in YOLO mode. Per-tool allow, ask or deny isn’t documented. 2026-10-21: CVE-2026-114463 (CERT/CC): a webhook route name with a colon could get a higher-privileged route’s toolsets, such as terminal and file access. The fix (PR #115285) was merged Sep 18; NVD links the v0.22.2 release. Update to the latest release (v0.22.4). |
| Human approval gates | 2/3 | Dangerous shell commands need approval. The default smart mode lets an LLM auto-approve low-risk ones, prompts time out to deny, and cron, one-shot and webhook sessions deny by default. Other tools aren’t gated, and container backends skip the checks. |
| Sandboxing | 2/3 | Local backend by default, with no isolation. Docker, Singularity, Modal, Daytona and Vercel backends run commands in a container with dropped capabilities and no-new-privileges. |
| Secrets handling | 2/3 | Sensitive env vars are stripped from terminal, execute_code and MCP subprocesses, credential files are write-blocked, and MCP error text is redacted. API keys sit in a plain .env file. |
| Audit logs | 1/3 | Logs under ~/.hermes/logs and a local session database of executed commands. No signed or central audit log. |
| Kill switch / interrupt | Unverified | Not confirmed in the docs we checked. |
| Network egress control | 1/3 | A website blocklist and SSRF protection cover the web and browser tools only. Terminal commands aren’t covered, and there’s no allowlist. |
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