loom@0.1.3

VERIFIED· startup only

Publisher claims: "Portable MCP server for storing, searching, and verifying compressed LLM context without losing invariants." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry GlamaPublisher mlkblk-it · publishing for 14 daysInstalls 0Last detonated 3d ago
$npx skills add loom
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Coverage

Startup only; authenticated tool behavior not tested.
Tested
server startup over stdio (initialize sent) · every file read, file written and host contacted by what ran
Not tested
the tool list (the server exited before answering) · what the tools do when called with real credentials

What this means for the label: Verified here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.

Before you give it your token

It will ask for
LOOM_DB_PASSWORDConfiguration, not credentials: LOOM_ALLOWED_DIRS, LOOM_AUDIT_DIR, LOOM_AUTO_STORE_THRESHOLD, LOOM_BURST, LOOM_DASH_PORT, LOOM_DB, LOOM_EMBED_MODEL, LOOM_HOST, LOOM_LOG_LEVEL, LOOM_MAX_FILE_MB, LOOM_PORT, LOOM_PROFILE, LOOM_RATE_LIMIT, LOOM_REDACT, LOOM_RPM, LOOM_SESSION_ID, LOOM_STORE_CMD, LOOM_TRANSPORT, LOOM_TTL_DAYS, LOOM_VECTORS
Where it talks to
no vendor host named in the codeAlso astral.sh, owasp.org — not the publisher's domain; check what for before connecting.
What the honeypot saw
no credential files read · no network
What we could not test
the tool list (the server exited before answering) · what the tools do when called with real credentials

Connect it with a scoped credential, under the guard, and read the third-party hosts first. The code names astral.sh, owasp.org as well as its own vendor. The guard injects LOOM_DB_PASSWORD only into requests to the host you bind (and its subdomains) and refuses the rest.

$vet-skills run --net declared -- <the server's command>

Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios; startup only; authenticated tool behavior not tested) on 2026-11-11 and scored it 83/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 20 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
20sprocessexec /app/apps/web/node_modules/.bin/which
20sprocessexec /root/.cache/node/corepack/v1/pnpm/10.28.0/dist/node-gyp-bin/which
20sprocessexec /app/node_modules/.bin/which
20sprocessexec /pnpm/which
20sprocessexec /usr/local/sbin/which
20sprocessexec /usr/local/bin/which
20sprocessexec /usr/sbin/which
20sprocessexec /usr/bin/which
20sclaimedstartup only: exited (0) before answering · (node:3100) [UNDICI-EHPA] Warning: EnvHttpProxyAgent is experimental, expect them to change at any time. (Use `node --trace-warnings ...` to show where the warning was created) /usr/bin/python3: No module named loom
20sprocessscript backend runs setup only
20sprocessno install scripts to re-run

Static findings

MEDIUM
File type combined with upload actiondash/static/app.js:506 · File type combined with upload action — agent may exfiltrate local data filesvar db=snap.db||{},a=snap.audit||{},m=computeMetrics(db,a);Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
npx invocation of non-well-known packagebin/loom-mcp.js:5 · npx invocation of non-well-known package — may execute untrusted code// `npx loom-mcp` without a Python toolchain. This wrapper locates a PythonFix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
File type combined with upload actiondash/static/app.js:754 · File type combined with upload action — agent may exfiltrate local data filesvar db=snap.db||{}, a=snap.audit||{}, m=computeMetrics(db,a);Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
Python subprocess execution detectedsrc/loom/sandbox.py:118 · Python subprocess execution detectedproc = subprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedtests/test_anchor_vectors.py:124 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/loom/auto_store.py:13 · Python subprocess execution detectedreturn subprocess.run(cmd, capture_output=True).stdoutFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detecteddash/tray.py:17 · Python subprocess execution detectedproc = subprocess.Popen([sys.executable, SERVER, "--db", r"C:\Users\Tech\.loom\loom.db"], cwd=DASH_DIR,Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/loom/sandbox.py:242 · Python subprocess execution detectedproc = subprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05

Cost to the agent

Instructions loaded
≈34 tok
1 file · 81 in bundle
Tool list per prompt
≈0 tok
0 tools · 0 per tool
Handshake
no reply
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 0

Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.

Known vulnerabilities

Vulnerability advisories (OSV) cover npm and PyPI packages; this registry has no advisory database.