@theronap/agnoclast-mcp@0.9.259
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AI Security Review
scanned 12d ago · by lpm-firewall-aiThe package has no npm install hook, and the flagged agent configuration changes are invoked through CLI commands. However, a custom CORTEX_URL can receive a reused token without a recipient allowlist, so this warrants a warning for conditional credential exposure.
Static reason
No blocking static signals were detected.
Trigger
The consumer sets CORTEX_URL to a custom domain and runs the MCP server, capture hook, or doctor check with a token available.
Impact
The configured host can receive the existing token, creating conditional credential exposure.
Mechanism
The client attaches the token as a bearer authorization header to requests sent to the resolved base URL.
AI rationale
The package has no npm install hook, and the flagged agent configuration changes are invoked through CLI commands. However, a custom CORTEX_URL can receive a reused token without a recipient allowlist, so this warrants a warning for conditional credential exposure.
Evidence
lib/diagnose.mjslib/server.mjslib/capture.mjslib/doctor.mjs
Network endpoints2
agnoclast.comCORTEX_URL
Decision evidence
public snapshotAI called this Suspicious at 91.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- The package exposes a CLI and its manifest lists no npm install lifecycle hook.
- CORTEX_URL defaults to the Cortex host, but configured custom domains pass through without a recipient allowlist.
- The runtime can reuse a token from its environment or saved MCP configuration, then send it in a bearer authorization header.
- The MCP server, capture path, and doctor check use the configured base and token during normal runtime.
- The reviewed editor configuration writes are reached through CLI setup or install commands; Antigravity's watcher requires a separate launchctl command to activate.
Evidence against
- The default recipient is the package-aligned https://agnoclast.com service.
- A custom recipient requires setting CORTEX_URL; source inspection found no package-selected unrelated default recipient.
- The package has no npm install lifecycle hook, and Antigravity does not activate its watcher when writing the files.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystem
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 Limitedbin/cortex-mcp.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@0.9.259.
See all versions of @theronap/agnoclast-mcp for other recorded verdicts.
- Review the evidence and your use of @theronap/agnoclast-mcp@0.9.259 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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