registry / negotium / 0.21.2

negotium@0.21.2

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

AI Security Review

scanned 14d ago · by lpm-firewall-ai

The scanner’s install-time and credential-related signals warrant review, but inspected source shows checksum-verified, package-aligned binary setup and no concrete attack chain. The flagged agent-integration locations do not establish exfiltration or unconsented control-surface mutation.

Static reason

One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source

Trigger

npm postinstall.

Impact

The inspected behavior installs Negotium runtime tools; no concrete consumer-project mutation, credential exfiltration, or agent-control hijack was established.

Mechanism

The hook selects a platform asset from a fixed release and checks its SHA-256 before replacing a binary in the package’s state directory.

AI rationale

Evidence

install-browser-rs.mjsinstall-bash-rs.mjs~/.negotium/binaries/browser-rs/~/.negotium/binaries/bash-rs/

Network endpoints1

github.com

Decision evidence

public snapshot

AI called this Clean at 89.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

package.json runs two named binary installers from its postinstall hook.
Both installers use platform-specific release assets and pinned SHA-256 values, and place binaries under Negotium’s state directory.
The requested agent-integration locations resolve to auth-path helpers, scoped environment setup, or Claude session-file handling; inspected excerpts show no credential forwarding to an unrelated recipient.
The flagged runtime bundle excerpts identify ordinary logger and browser-process modules; no concrete attack behavior was established.

Evidence against

The postinstall hook downloads and installs executable binaries, but the inspected scripts pin release versions, verify checksums, and target Negotium’s own binary directory.
The package exposes credential-path and agent runtime functionality, but the inspected target excerpts do not show unconsented agent-control configuration changes or credential exfiltration.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVars

Source & flagged code

9 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": "0.5.1",

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

dist/browser-runtime.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = negotium@0.16.1 matchedIdentity = npm:bmVnb3RpdW0:0.16.1 similarity = 0.692 summary = stored previous version shares package body but lacks this dangerous source file

Critical

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

dist/browser-runtime.jsView 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

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

1 Critical5 High6 Medium4 Low

CriticalPrevious Version Dangerous Deltadist/browser-runtime.js

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

Affected versions and remediation

This report applies to negotium@0.21.2.

See all versions of negotium for other recorded verdicts.

Review the evidence and your use of negotium@0.21.2 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: 2026-10-09 08:54:41.837Z (UTC).

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