registry / negotium / 0.22.2

negotium@0.22.2

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

AI Security Review

scanned 3d ago · by lpm-firewall-ai

Source inspection found a postinstall binary setup that uses pinned release assets and checksum validation, plus local agent authentication and session handling. The scanner’s credential-redirection signal corresponds to local Codex auth-path resolution; no credential transfer or other concrete attack was identified.

Static reason

One or more suspicious static signals were detected.

Trigger

Package installation triggers the postinstall script; agent and query code runs when invoked through the package runtime.

Impact

The inspected behavior supports the package’s binary setup and agent runtime; no confirmed malicious effect was established.

Mechanism

The installers fetch platform assets from the project’s GitHub releases and reject content that fails the pinned SHA-256 check. Flagged credential and agent locations resolve local auth state or handle session files; no unrelated credential recipient was found.

AI rationale

Evidence

install-browser-rs.mjsinstall-bash-rs.mjsdist/registry.jsdist/chunk-bn1tt2qw.js

Network endpoints2

github.com/maestrojeong/browser-rs-mcp/releases/download/github.com/maestrojeong/bash-rs-mcp/releases/download/

Decision evidence

public snapshot

AI called this Clean at 86.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

package.json activates two binary installers; each fetches a fixed release asset and checks its SHA-256 before installation.
Both installers place binaries under the Negotium state directory.
The flagged Codex auth helper resolves a local auth-file path; the auth check tests whether that file exists.
The flagged agent and registry code writes session rollout files to the user’s Claude projects directory.
The flagged query runtime initializes a standard stderr logger; the remaining flagged bundle locations contain local auth-path resolution or agent runtime setup.

Evidence against

The postinstall downloads executable binaries, but the inspected installer code pins release versions and rejects checksum mismatches.
The reviewed credential-related code does not show a transfer to an unofficial gateway or other recipient.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetwork

Source & flagged code

8 flagged

package.jsonView file

Lines 124-164json

124 ],

125 "engines": {

126 "bun": ">=1.2.15"

127 },

128 "repository": {

129 "type": "git",

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

131 "directory": "apps/negotium"

132 },

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

134 "bugs": {

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

136 },

137 "publishConfig": {

138 "access": "public"

139 },

140 "scripts": {

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

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

143 "lint": "biome check",

144 "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 · L144

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L144

145 "prepack": "bun run build"

146 },

147 "dependencies": {

148 "@anthropic-ai/claude-agent-sdk": "^0.3.281",

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

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

151 "@openai/codex-sdk": "^0.156.1",

152 "diff": "^9.0.0",

153 "maestro-agent-sdk": "0.5.4",

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

155 "orchgraph": "0.2.4",

156 "pino": "^10.3.1",

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

158 "tsx": "^4.23.13",

159 "zod": "4.4.3"

160 },

161 "devDependencies": {

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

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

164 "typescript": "^5"

dist/hosted-agent.jsView file

Lines 30-70javascript

30 SYSTEM_HEALTH_SERVER,

31 TASK_SERVER,

32 TOKEN_STATS_SERVER,

33 TOPIC_WORKSPACE_DIR,

34 TSCONFIG_PATH,

35 TSX_LOADER,

36 VAULT_MASTER_KEY

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} delete env.CLAUDECODE; 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 existsSync5, readFileSync as readFileSync5, writeFileSync as writeFileSync4 } from "fs";

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

22var init_maestro_bootstrap_env = __esm(() => { L23: process.env.MAESTRO_SDK_SILENT_BOOTSTRAP ??= "1"; L24: }); ... L188: }); L189: import { execFileSync } from "child_process"; L190: import { randomBytes } from "crypto"; ... L219: function dependencyBinNames(name) { L220: if (process.platform !== "win32") L221: return [name]; ... L359: } L360: const secret = randomBytes(32).toString("base64url"); L361: try {

High

Command Output Exfiltration

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

dist/main.jsView on unpkg · L22

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/query-runtime.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 4

High

Semantic Analysis Limited

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

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

Source & flagged code

8 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

50// ../../packages/core/src/agents/claude-provider.ts L51: import { spawn as spawn2 } from "child_process"; L52: import { existsSync, readFileSync as readFileSync2 } from "fs";

High

Child Process

Package source references child process execution.

dist/hosted-agent.jsView on unpkg · L50

Findings

5 High6 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/hosted-agent.js

HighCredential Redirect Persistencedist/mcp-factories.js

HighCommand Output Exfiltrationdist/main.js

HighSemantic Analysis Limiteddist/query-runtime.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

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

Affected versions and remediation

This report applies to negotium@0.22.2.

See all versions of negotium for other recorded verdicts.

Review the evidence and your use of negotium@0.22.2 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: 2026-10-20 08:30:38.821Z (UTC).

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