registry / AI-agent capability abuse / delimit-cli / 4.19.9

delimit-cli@4.19.9

The merge gate for AI-written code, with signed, replayable attestation. Works with Claude Code, Codex, Cursor, and Gemini CLI.

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

This is not concrete malicious install-hook abuse because the lifecycle script does not mutate agent configuration and the installer requires an explicit confirmed command. The broad, persistent agent and Git hook capability warrants a non-blocking warning.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

The user runs `delimit install` and confirms the prompt.

Impact

Future Git and AI-agent sessions can execute or receive Delimit-controlled governance behavior until removed.

Mechanism

The installer creates executable hook files, changes Git's global hooks path, and can write managed instructions into agent configuration files.

AI rationale

Evidence

bin/delimit-cli.jslib/hooks-installer.jslib/cross-model-hooks.js~/.delimit/hooks~/.claude.json~/.codex/config.json~/.codex/instructions.md

Decision evidence

public snapshot

AI called this Suspicious at 87.0% confidence as Dangerous Capability with low false-positive risk.

Evidence for warning

The package registers a postinstall script.
Install-time telemetry is disabled unless an affirmative environment flag is set.
The explicit install command defaults to global scope and offers AI and MCP hooks, but asks for confirmation before changing state.
The installer writes executable hooks and sets Git's global hooks path.
Cross-model hook support writes managed instructions into the Codex configuration area.

Evidence against

No automatic mutation of AI-agent configuration was found in the postinstall script.
The only postinstall network request is opt-in telemetry to the package's own host.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 33 file(s), 874 KB of source, external domains: 127.0.0.1, api.anthropic.com, api.lemonsqueezy.com, api.meta.ai, api.openai.com, api.x.ai, app.delimit.ai, delimit.ai, generativelanguage.googleapis.com, github.com, img.shields.io, jsonfeed.org, python.org, registry.npmjs.org, us-central1-aiplatform.googleapis.com

Source & flagged code

26 flagged

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

bin/delimit-setup.jsView file

12const path = require('path'); L13: const { execSync } = require('child_process'); L14: const os = require('os');

High

Child Process

Package source references child process execution.

bin/delimit-setup.jsView on unpkg · L12

12const path = require('path'); L13: const { execSync } = require('child_process'); L14: const os = require('os'); L15: // Shared prompt gate: false when stdin/stdout is not a TTY, CI is set, L16: // DELIMIT_NON_INTERACTIVE is set, or the user passed --yes. Every prompt ... L19: const SETUP_INTERACTIVE = isInteractive({ yes: process.argv.includes('--yes') || process.argv.includes('-y') }); L20: const DELIMIT_HOME = path.join(os.homedir(), '.delimit'); L21: const MCP_CONFIG = path.join(os.homedir(), '.mcp.json'); ... L107: // Self-update check: ensure we're running the latest version (skip if already re-execed) L108: const _pkg = JSON.parse(fs.readFileSync(path.join(__dirname, '..', 'package.json'), 'utf-8')); L109: if (!process.env.DELIMIT_SETUP_UPDATED) { L110: try {

High

Sandbox Evasion Gated Capability

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

bin/delimit-setup.jsView on unpkg · L12

113log(dim(` Updating delimit-cli ${_pkg.version} -> ${latest}...`)); L114: execSync('npm install -g delimit-cli@latest 2>/dev/null', { stdio: 'pipe', timeout: 30000 }); L115: execSync('delimit-cli setup', { stdio: 'inherit', env: { ...process.env, DELIMIT_SETUP_UPDATED: '1' } });

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

bin/delimit-setup.jsView on unpkg · L113

10*/ L11: const fs = require('fs'); L12: const path = require('path');

Medium

Dynamic Require

Package source references dynamic require/import behavior.

bin/delimit-setup.jsView on unpkg · L10

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

bin/delimit-setup.jsView on unpkg · L12

lib/proxy-handler.jsView file

7L8: const { spawn } = require('child_process'); L9: const axios = require('axios'); L10: const path = require('path'); ... L12: L13: const AGENT_URL = `http://127.0.0.1:${process.env.DELIMIT_AGENT_PORT || 7823}`; L14:

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

lib/proxy-handler.jsView on unpkg · L7

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = lib/proxy-handler.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/proxy-handler.jsView on unpkg

bin/delimit-cli.jsView file

63} L64: if (!config.mcpServers) config.mcpServers = {}; L65: if (!config.mcpServers.delimit) { L66: const python = process.platform === 'win32' ? 'python.exe' : 'python3'; ... L71: L72: config.mcpServers.delimit = { L73: command: python, ... L84: } L85: fs.writeFileSync(antigravityConfig, JSON.stringify(config, null, 2)); L86: } ... L476: // --- MCP --- L477: const mcpConfigPath = path.join(homedir, '.mcp.json');

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

bin/delimit-cli.jsView on unpkg · L63

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = bin/delimit-cli.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/delimit-cli.jsView on unpkg

lib/cross-model-hooks.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. ion migratetonestedformat(hookgroup) { if (hookgroup.hooks && array.isarray(hookgroup.hooks)) { return hookgroup; } const nested = { matcher: hookgroup.matcher || '' }; if (hookgroup.if) nested.if = hookgroup.if; nested.hooks = [{ type: hookgroup.type || 'command', command: hookgroup.command }]; return nested; }

High

Trigger Reachable External Ai Agent Control Surface Mutation

Manifest-trigger-reachable source writes behavior-bearing configuration into a user or project AI-agent control surface.

lib/cross-model-hooks.jsView on unpkg

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = lib/cross-model-hooks.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/cross-model-hooks.jsView on unpkg

lib/auth-setup.jsView file

11Trigger-reachable persistence chain: manifest.bin -> bin/delimit-cli.js -> lib/auth-setup.js L11: const crypto = require('crypto'); L12: const { execSync } = require('child_process'); L13: const chalk = require('chalk'); ... L16: constructor() { L17: this.configDir = path.join(process.env.HOME, '.delimit'); L18: this.credentialsFile = path.join(this.configDir, 'credentials.enc'); ... L183: console.log(chalk.gray('\n Required scopes for full functionality:')); L184: console.log(chalk.gray(' • repo (Full control of private repositories)')); L185: console.log(chalk.gray(' • workflow (Update GitHub Action workflows)')); ... L281: L282: mcp[server].endpoint = await this.prompt(' Endpoint URL (http://localhost:8080): ', 'http://localhost:8080'); L283: }

High

Trigger Reachable Persistence

A manifest entrypoint or package-local install chain reaches persistence behavior.

lib/auth-setup.jsView on unpkg · L11

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = lib/auth-setup.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/auth-setup.jsView on unpkg

gateway/ai/deliberation.cpython-310-x86_64-linux-gnu.soView file

•path = gateway/ai/deliberation.cpython-310-x86_64-linux-gnu.so kind = native_binary sizeBytes = 2646312 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

gateway/ai/deliberation.cpython-310-x86_64-linux-gnu.soView on unpkg

bin/delimit-os.shView file

•path = bin/delimit-os.sh kind = build_helper sizeBytes = 3481 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

bin/delimit-os.shView on unpkg

lib/agent.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 5

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

lib/agent.js#virtual:normalized:round1View on unpkg

lib/hooks-installer.jsView file

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = lib/hooks-installer.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/hooks-installer.jsView on unpkg

lib/agent.jsView file

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = lib/agent.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/agent.jsView on unpkg

lib/api-engine.jsView file

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = lib/api-engine.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/api-engine.jsView on unpkg

lib/attest-mcp.jsView file

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = lib/attest-mcp.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/attest-mcp.jsView on unpkg

lib/wrap-engine.jsView file

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = lib/wrap-engine.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/wrap-engine.jsView on unpkg

bin/delimit.jsView file

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = bin/delimit.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/delimit.jsView on unpkg

lib/session-shell.jsView file

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = lib/session-shell.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/session-shell.jsView on unpkg

lib/delimit-template.jsView file

•matchType = normalized_sha256 matchedPackage = delimit-cli@4.19.0 matchedPath = lib/delimit-template.js matchedIdentity = npm:ZGVsaW1pdC1jbGk:4.19.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/delimit-template.jsView on unpkg

Source & flagged code

26 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

bin/delimit-setup.jsView file

12const path = require('path'); L13: const { execSync } = require('child_process'); L14: const os = require('os');

High

Child Process

Package source references child process execution.

bin/delimit-setup.jsView on unpkg · L12

Findings

1 Critical21 High8 Medium5 Low

CriticalAi Agent Control Hijackbin/delimit-cli.js

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processbin/delimit-setup.js

HighShell

HighSame File Env Network Executionlib/proxy-handler.js

HighSandbox Evasion Gated Capabilitybin/delimit-setup.js

HighTrigger Reachable External Ai Agent Control Surface Mutationlib/cross-model-hooks.js

HighTrigger Reachable Persistencelib/auth-setup.js

HighRuntime Package Installbin/delimit-setup.js

HighSemantic Analysis Limitedlib/agent.js#virtual:normalized:round1

HighKnown Malware Source Similaritybin/delimit-cli.js

Affected versions and remediation

This report applies to delimit-cli@4.19.9.

See all versions of delimit-cli for other recorded verdicts.

Review the evidence and your use of delimit-cli@4.19.9 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: 2026-09-22 01:41:38.454Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Runtime surface

Behavioral surface

Source & flagged code