Grades are a hygiene check, not a security guarantee.

MCP, MCP server

hmem Humanlike Memory for AI Agents

Your AI forgets everything between sessions.

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit 0e35095bf675, unchanged since the check below.

INSTALL_LIFECYCLE_HOOK

Why this grade

  • INSTALL_LIFECYCLE_HOOK Medium

    A package install hook (preinstall, install, postinstall or prepare) runs a script.

    package.json, line 59 postinstall

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    plugins/hermes-hmem/__init__.py, line 71

    result = subprocess.run(

    plugins/hermes-hmem/__init__.py, line 96

    subprocess.Popen(

    src/cli-checkpoint-agent.ts, line 250

    try { fs.unlinkSync(mcpConfigPath); } catch {}

    Show more

    src/cli-deactivate.ts, line 62

    try { fs.unlinkSync(activeProjectFilePath(pid)); } catch { /* may not exist */ }

    src/cli-deactivate.ts, line 71

    try { fs.unlinkSync(`${tmpDir}/${f}`); } catch { /* ignore */ }

    src/cli-init.ts, line 701

    try { fs.unlinkSync(p); } catch {}

    src/cli-init.ts, line 929

    fs.rmSync(dest, { recursive: true, force: true });

    src/cli-init.ts, line 941

    fs.rmSync(stalePath, { recursive: true, force: true });

    src/diagnostics.ts, line 39

    try { fs.unlinkSync(rotated); } catch { /* ignore */ }

    src/mcp-server.ts, line 130

    try { fs.unlinkSync(CACHE_RESET_SIGNAL); } catch {}

    CHANGELOG.md, line 64

    - **Sync I/O no longer blocks the event loop.** `syncPull`, `syncPullThenPush`, `syncPushSync`, `syncPushWithRetry`, `reserveId`, `reserveNextId`, and `reserveNextSubIds` now retur

    hermes-hooks/hermes-cli-hmem-statusline.patch, line 16

    + result = subprocess.run(

  • Install and update

    Concern

    runs a script at install time.

    INSTALL_LIFECYCLE_HOOK

    package.json, line 59

    postinstall

  • Network

    Concern

    can reach server. The description does not name that host. can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    skills/hmem-sync-setup/SKILL.md, line 187

    curl -X POST https://server/hmem-sync/announcements \

    skills/hmem-sync-setup/SKILL.md, line 197

    curl -s https://server/hmem-sync/announcements -H "Authorization: Bearer $TOKEN"

    skills/hmem-sync-setup/SKILL.md, line 200

    curl -X PUT https://server/hmem-sync/announcements/2 \

    Show more

    skills/hmem-sync-setup/SKILL.md, line 206

    curl -X DELETE https://server/hmem-sync/announcements/2 \

    src/extensions/pi-hmem.ts, line 383

    const res = await fetch(`${provider.baseUrl}/chat/completions`, {

    src/sync/api.ts, line 51

    const res = await fetch(`${this.baseUrl}${path}`, {

    src/sync/api.ts, line 73

    const res = await fetch(`${this.baseUrl}/health`, { signal: AbortSignal.timeout(3000) })

    skills/hmem-search-workspace/iteration-1/review.html, line 666

    const resp = await fetch("/api/feedback");

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_UNCONFIRMED

    skills/hmem-write/SKILL.md, line 198

    needs DISCORD_TOKEN + WEATHER_API_KEY in .env\n\tCodebase\n\t\tEntry point - bot.py,

    src/cli-checkpoint-agent.ts, line 275

    if (process.env.CODEX_SESSION_ID || process.env.CODEX_API_KEY) return "codex";

    src/extensions/pi-hmem.ts, line 361

    const dsKey = process.env.DEEPSEEK_API_KEY;

    Show more

    src/extensions/pi-hmem.ts, line 365

    const oaKey = process.env.OPENAI_API_KEY;

    src/extensions/pi-hmem.ts, line 370

    const apiKey = process.env.OPENAI_API_KEY;

    .gitignore, line 5

    *.tmp

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    package-lock.json, line 1

    {

    src/hmem-store.ts, line 1

    /**

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Note

Hygiene check of commit 0e35095bf675. can delete files. runs a script at install time. can reach server. The description does not name that host. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: 0e35095bf67523819d78fc41474324105963fc75

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen