registry / AI-agent capability abuse / negotium / 0.14.2

negotium@0.14.2

Install the Negotium multi-agent runtime and CLI with one package

AI Security Review

scanned 2mo ago · by lpm-firewall-ai

No concrete malicious behavior was established, but automatic native-binary installation and permission-bypassing agent orchestration create a real elevated-capability risk. This warrants a warning rather than a publication block.

Static reason

One or more suspicious static signals were detected.

Trigger

Installing the package runs postinstall; invoking its runtime activates the agent and cron features.

Impact

A user who runs the runtime grants it substantial local agent capability; configured cron prompts may leave the machine for LLM summarization.

Mechanism

Native-tool bootstrap and user-invoked privileged agent orchestration.

AI rationale

Evidence

package.jsoninstall-browser-rs.mjsdist/hosted-agent.jsdist/agent-helpers.jsdist/runtime/cron/summarize.ts~/.negotium/binaries/browser-rs/v0.3.2/browser-rs~/.claude/projects/<encoded-cwd>/<sessionId>.jsonl

Network endpoints2

github.com/maestrojeong/browser-rs-mcp/releases/download/${VERSION}api.deepseek.com/v1/chat/completions

Decision evidence

public snapshot

AI called this Suspicious at 84.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

Its postinstall hook automatically runs two installers.
The browser installer downloads, verifies, and installs an executable under the user's Negotium state directory.
Runtime launches Claude with permission bypass enabled.
Runtime writes synthetic session records into Claude's user directory.
Cron prompt summaries can send a configured API-key request to DeepSeek or an environment-selected URL.

Evidence against

Downloaded installer payloads are checked against hard-coded SHA-256 values before installation.
The installer writes only to the package-owned .negotium state area.
The DeepSeek call requires a supplied API key and uses the official endpoint by default.
No source evidence shows secret harvesting, unsolicited external exfiltration, or install-time mutation of Codex or Claude configuration.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell

Source & flagged code

9 flagged

package.jsonView file

Lines 123-163json

123 ],

124 "engines": {

125 "bun": ">=1.2.15"

126 },

127 "repository": {

128 "type": "git",

129 "url": "git+https://github.com/maestrojeong/negotium.git",

130 "directory": "apps/negotium"

131 },

132 "homepage": "https://github.com/maestrojeong/negotium#readme",

133 "bugs": {

134 "url": "https://github.com/maestrojeong/negotium/issues"

135 },

136 "publishConfig": {

137 "access": "public"

138 },

139 "scripts": {

140 "build": "bun ../../scripts/build-negotium-package.ts",

141 "check": "bunx tsc --noEmit",

142 "lint": "biome check",

143 "postinstall": "node install-browser-rs.mjs && node install-bash-rs.mjs",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L143

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L143

144 "prepack": "bun run build"

145 },

146 "dependencies": {

147 "@anthropic-ai/claude-agent-sdk": "^0.3.261",

148 "@anthropic-ai/sdk": "^0.124.0",

149 "@modelcontextprotocol/sdk": "^1.30.0",

150 "@openai/codex-sdk": "^0.153.4",

151 "diff": "^9.0.0",

152 "maestro-agent-sdk": "0.5.1",

153 "node-telegram-bot-api": "^1.1.2",

154 "orchgraph": "0.2.4",

155 "pino": "^10.3.1",

156 "pino-pretty": "^13.1.3",

157 "tsx": "^4.23.13",

158 "zod": "4.4.3"

159 },

160 "devDependencies": {

161 "@types/node": "^26.4.1",

162 "bun-types": "^1.4.2",

163 "typescript": "^5"

dist/hosted-agent.jsView file

Lines 1-29javascript

1// @bun

2import {

3 __require,

4 __toESM,

5 canonicalMcpBridgeEnv,

6 revokeCanonicalMcpBridgeTurn

7} from "./chunk-s2gez3wg.js";

9// ../../packages/core/src/agents/claude-provider.ts

10import

dist/mcp-factories.jsView file

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/mcp-factories.js: writeFileSync writeFileSync(secretFile, `${envValue} writeFileSync(secretFile, `${secret} return process.env.NEGOTIUM_CODEX_AUTH_FILE || join(process.env.CODEX_HOME || join(homedir(), ".codex"), "auth.json"); writeFileSync as writeFileSync3 writeFileSync3(fd, payload); import { existsSync as existsSync4, readFileSync as readFileSync5, writeFileSync as writeFileSync4 } from "fs"; const projectsDir = join3(homedir2(), ".claude", "projects", encodeClaudeCwd(opts.cwd));

High

Credential Redirect Persistence

Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection.

dist/mcp-factories.jsView on unpkg

dist/main.jsView file

4072}); L4073: import { spawn as spawn3 } from "child_process"; L4074: function createCodexAppServerForker(host) { ... L4076: const child = host.spawnServer(); L4077: return await new Promise((resolve6, reject) => { L4078: let settled = false; L4079: let stdoutBuffer = ""; L4080: let stderr = ""; ... L4087: try { L4088: child.stdin.end(); L4089: child.kill();

High

Command Output Exfiltration

Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.

dist/main.jsView on unpkg · L4072

dist/agent-helpers.jsView file

3308Trigger-reachable command-output exfiltration chain: manifest.exports -> dist/agent-helpers.js L3308: }); L3309: import { spawn as spawn3 } from "child_process"; L3310: function createCodexAppServerForker(host) { ... L3312: const child = host.spawnServer(); L3313: return await new Promise((resolve6, reject) => { L3314: let settled = false; L3315: let stdoutBuffer = ""; L3316: let stderr = ""; ... L3323: try { L3324: child.stdin.end(); L3325: child.kill();

High

Trigger Reachable Command Output Exfiltration

A manifest entrypoint or package-local install chain reaches command-output exfiltration behavior.

dist/agent-helpers.jsView on unpkg · L3308

dist/runtime/scripts/faster-whisper-wrapper.pyView file

•path = dist/runtime/scripts/faster-whisper-wrapper.py kind = build_helper sizeBytes = 2704 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

dist/runtime/scripts/faster-whisper-wrapper.pyView on unpkg

dist/runtime-helpers.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 3

High

Semantic Analysis Limited

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

dist/runtime-helpers.js#virtual:normalized:round1View on unpkg

Source & flagged code

9 flagged · loading source

package.jsonView file

•scripts.postinstall = node install-browser-rs.mjs && node install-bash-rs.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node install-browser-rs.mjs && node install-bash-rs.mjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

dist/hosted-agent.jsView file

9// ../../packages/core/src/agents/claude-provider.ts L10: import { spawn as spawn2 } from "child_process"; L11: import { existsSync as existsSync2, readFileSync as readFileSync3 } from "fs";

High

Child Process

Package source references child process execution.

dist/hosted-agent.jsView on unpkg · L9

Findings

7 High6 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/hosted-agent.js

HighShell

HighCredential Redirect Persistencedist/mcp-factories.js

HighCommand Output Exfiltrationdist/main.js

HighTrigger Reachable Command Output Exfiltrationdist/agent-helpers.js

HighSemantic Analysis Limiteddist/runtime-helpers.js#virtual:normalized:round1

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requiredist/hosted-agent.js

MediumNetwork

MediumEnvironment Vars

MediumShips Build Helperdist/runtime/scripts/faster-whisper-wrapper.py

Medium

Affected versions and remediation

This report applies to negotium@0.14.2.

See all versions of negotium for other recorded verdicts.

Review the evidence and your use of negotium@0.14.2 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: 2026-09-08 12:06:47.353Z (UTC).

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