registry / @theronap/agnoclast-mcp / 0.9.154
@theronap/agnoclast-mcp@0.9.154
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AI Security Review
scanned 25d ago · by lpm-firewall-aiThe source supports a warning for guarded agent extension setup: the Antigravity adapter writes launchd artifacts, while activation is left to the user. The package has no npm install lifecycle hook, and the inspected behavior does not establish malicious activity.
Static reason
No blocking static signals were detected.
Trigger
A user invokes the package’s editor setup that calls the Antigravity adapter’s wire function.
Impact
If the user activates it, the watcher can run the configured sync process when Antigravity data changes. The script depends on a local development checkout.
Mechanism
The adapter writes a sync script and launchd plist under the user’s home directory. The plist is not activated by the adapter; activation requires a separate launchctl load command.
AI rationale
The source supports a warning for guarded agent extension setup: the Antigravity adapter writes launchd artifacts, while activation is left to the user. The package has no npm install lifecycle hook, and the inspected behavior does not establish malicious activity.
Evidence
lib/editors/antigravity.mjs
Decision evidence
public snapshotAI called this Suspicious at 84.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- package.json defines no preinstall, install, or postinstall hook.
- The Antigravity adapter writes a shell script and launchd plist into the user’s home directory when its wire function runs.
- The adapter does not load the launchd job; it reports that the user must run launchctl load to activate it.
- The package exposes config and skill integration with Codex, Cursor, and other agent locations.
Evidence against
- Antigravity activation requires an additional user command, and its script depends on a local development checkout.
- The uninstall function supports a dry run and gates file writes on that option.
- No concrete credential theft, unrelated data exfiltration, or active attack was established from the inspected source.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsUrlStrings
Source & flagged code
6 flaggedlib/capture.mjsView file
1import { readFileSync, accessSync, constants, openSync, mkdirSync } from 'fs'
L2: import { spawn, execFileSync } from 'child_process'
L3: import { homedir } from 'os'
...
L21: if (!res.ok) return null
L22: const j = await res.json().catch(() => ({}))
L23: return Array.isArray(j.types) ? j.types : null
...
L35: try {
L36: if (resolve(String(cwd)) === homedir()) return 'general'
L37: } catch { /* unresolvable path — fall through to basename */ }
...
L45: //
L46: // Handles the four remote forms git emits: scp-like ssh (git@github.com:o/n.git), ssh://, https://,
L47: // git://. The HOST CHECK IS LOAD-BEARING, not cosmetic: this string becomes a clearance key, and
Low
Weak Crypto
Package source references weak cryptographic algorithms.
lib/capture.mjsView on unpkg · L1lib/editors/antigravity.mjsView file
4Trigger-reachable persistence chain: manifest.bin -> bin/cortex-mcp.mjs -> lib/install.mjs -> lib/editors/index.mjs -> lib/editors/antigravity.mjs
L4: // WatchPaths the trajectory store and runs a one-shot sync. wire() generates the two artifacts
L5: // (the sync.sh + the launchd plist) deterministically. It does NOT run `launchctl load` here
L6: // (an unverifiable system mutation) and it flags the PORTABILITY BLOCKER below.
...
L21: /** The launchd plist, home-substituted. Deterministic — golden-testable byte-for-byte. */
L22: export function renderAntigravityPlist({ home = homedir() } = {}) {
L23: const sh = join(home, '.cortex', 'antigravity-sync.sh')
...
L33: <array>
L34: <string>/bin/bash</string>
L35: <string>${sh}</string>
Findings
3 High4 Medium5 Low
HighTrigger Reachable External Ai Agent Control Surface Mutationlib/uninstall.mjs
HighTrigger Reachable Persistencelib/editors/antigravity.mjs
HighSemantic Analysis Limitedlib/diagnose.mjs#virtual:normalized:round1
MediumNetwork
MediumEnvironment Vars
MediumInstall Persistencelib/editors/antigravity.mjs
MediumSuspicious Lifecycle Evidencepackage.json
LowScripts Present
LowWeak Cryptolib/capture.mjs
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @theronap/agnoclast-mcp@0.9.154.
See all versions of @theronap/agnoclast-mcp for other recorded verdicts.
- Review the evidence and your use of @theronap/agnoclast-mcp@0.9.154 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
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