@expo/agent-cli@1.0.8
Agent-native CLI on top of the Expo CLI family
AI Security Review
scanned 2mo ago · by lpm-firewall-aiThis is a guarded, user-invoked AI-agent configuration capability rather than an install-hook attack. It warrants a warning because it changes behavior-bearing agent instruction files.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
A user runs an Expo agent CLI setup or new-project command.
Impact
It can influence AI-agent instructions within that project.
Mechanism
Writes a managed AGENTS.md block and may update CLAUDE.md.
AI rationale
This is a guarded, user-invoked AI-agent configuration capability rather than an install-hook attack. It warrants a warning because it changes behavior-bearing agent instruction files.
Evidence
build/cli/248.index.jsbuild/cli/217.index.jsAGENTS.mdCLAUDE.md.expo/agent-skill-links.json
Decision evidence
public snapshotAI called this Suspicious at 86.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- Explicit CLI flows can create or update project agent instruction files and rewrite Expo install examples.
- The bundled CLI launches `npx expo run:<platform>` when installing a development build on a selected device.
Evidence against
- package.json has no preinstall, install, or postinstall hook.
- The agent-file write is part of a user-invoked project setup or scaffolding flow, not package installation.
- No self-dependency, credential collection, exfiltration, hidden payload loading, or destructive behavior was found.
Behavioral surface
ChildProcessCryptoEnvironmentVarsEvalFilesystemNetwork
HighEntropyStringsMinifiedProtestwareUrlStrings
Source & flagged code
6 flaggedbuild/cli/472.index.jsView file
257const command = `npx expo ${args.join(' ')}`;
L258: const built = await spawn('npx', ['expo', ...args], { cwd: projectRoot, timeoutMs });
L259: if (built.spawnError) {
High
Child Process
Package source references child process execution.
build/cli/472.index.jsView on unpkg · L257257const command = `npx expo ${args.join(' ')}`;
L258: const built = await spawn('npx', ['expo', ...args], { cwd: projectRoot, timeoutMs });
L259: if (built.spawnError) {
High
Runtime Package Install
Package source invokes a package manager install command at runtime.
build/cli/472.index.jsView on unpkg · L257build/cli/734.index.jsView file
5035L5036: module.exports = eval("require")("bufferutil");
L5037:
Low
Eval
Package source references a known benign dynamic code generation pattern.
Findings
1 Critical4 High4 Medium6 Low
CriticalPrevious Version Dangerous Deltabuild/cli/248.index.js
HighChild Processbuild/cli/472.index.js
HighExternal Ai Agent Control Surface Mutationbuild/cli/248.index.js
HighRuntime Package Installbuild/cli/472.index.js
HighSemantic Analysis Limitedbuild/cli/193.index.js#virtual:normalized:round1
MediumNetwork
MediumEnvironment Vars
MediumProtestware
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowEvalbuild/cli/734.index.js
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to @expo/agent-cli@1.0.8.
See all versions of @expo/agent-cli for other recorded verdicts.
- Review the evidence and your use of @expo/agent-cli@1.0.8 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.