@theronap/agnoclast-mcp@0.9.280
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AI Security Review
scanned 6d ago · by lpm-firewall-aiThe package automatically repairs a Claude Code control-surface hook during SessionStart, including re-adding it when absent. The guard has a package-related privacy purpose, but silently restoring a removed hook is an unrequested agent-configuration mutation, so this warrants a warning rather than a block.
Static reason
No blocking static signals were detected.; previous stored version diff introduced dangerous source
Trigger
The installed `status` hook runs at session start.
Impact
This changes Claude Code behavior for the next session and reasserts the hook even if the user removed it.
Mechanism
It copies `confidential-guard.mjs` into `~/.cortex/hooks/` and, if missing, adds a guard hook to `~/.claude/settings.json`.
AI rationale
The package automatically repairs a Claude Code control-surface hook during SessionStart, including re-adding it when absent. The guard has a package-related privacy purpose, but silently restoring a removed hook is an unrequested agent-configuration mutation, so this warrants a warning rather than a block.
Evidence
bin/cortex-mcp.mjslib/editors/claude.mjs~/.claude/settings.json~/.cortex/hooks/confidential-guard.mjs
Decision evidence
public snapshotAI called this Suspicious at 87.0% confidence as Unknown with medium false-positive risk.
Evidence for warning
- The `status` command is wired as a SessionStart health check and calls `healConfidentialGuard` automatically.
- The self-heal copies the guard and adds its PreToolUse hook to Claude settings when that hook is missing.
- The Antigravity adapter writes its artifacts only when wired and explicitly does not activate the launchd watcher.
Evidence against
- The guard is intended to block other Agnoclast connections in a session locked to a confidential brain.
- The Antigravity adapter warns that manual `launchctl load` is needed to activate its watcher.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
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/editors/claude.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
4 High3 Medium5 Low
HighTrigger Reachable External Ai Agent Control Surface Mutationlib/channel.mjs
HighTrigger Reachable Persistencelib/editors/antigravity.mjs
HighSemantic Analysis Limitedbin/cortex-mcp.mjs#virtual:normalized:round1
HighPrevious Version Dangerous Deltalib/confidential_session.mjs
MediumNetwork
MediumEnvironment Vars
MediumInstall Persistencelib/editors/antigravity.mjs
LowScripts Present
LowWeak Cryptolib/capture.mjs
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @theronap/agnoclast-mcp@0.9.280.
See all versions of @theronap/agnoclast-mcp for other recorded verdicts.
- Review the evidence and your use of @theronap/agnoclast-mcp@0.9.280 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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