registry / Staged payload carrier / @toothfairyai/tfcode / 2.0.2

@toothfairyai/tfcode@2.0.2

**ToothFairyAI's AI coding agent** — a command-line interface that brings AI-powered coding assistance to your terminal with deep ToothFairyAI workspace integration.

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

The automatic unpinned native payload retrieval and pip installation are concrete install-time risks. Static source inspection does not establish secret theft or other direct malicious behavior, so a warning is proportionate.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

npm installation, through the postinstall lifecycle hook.

Impact

A later user invocation can run an unverified remotely supplied binary; installation also changes the user's Python environment.

Mechanism

Unpinned remote binary retrieval and automatic Python package installation.

AI rationale

Evidence

package.jsonpostinstall.mjsbin/tfcodebin/tfcode.exebin/app${tmpDir}/${filename}

Network endpoints2

gitea.toothfairyai.com/api/v1/repos/ToothFairyAI/tf_code/releases/latestgitea.toothfairyai.com/ToothFairyAI/tf_code/releases/download/v${version}/${filename}

Decision evidence

public snapshot

AI called this Suspicious at 93.0% confidence as Dangerous Capability with low false-positive risk.

Evidence for warning

Its postinstall hook fetches the repository's current latest-release version, rather than a package-pinned artifact.
The hook downloads and extracts a native archive without an integrity check, then installs an executable.
Installation also runs pip to install four Python packages into the user's account.

Evidence against

The manifest has no runtime dependency on this package name, so there is no nested lifecycle self-dependency chain.
The inspected JavaScript contains no credential harvesting or outbound transmission of environment values.
The shipped Python modules only model and retrieve workspace metadata; they do not write agent configuration.

Behavioral surface

Source

ChildProcessEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 13.6 KB of source, external domains: toothfairyai.com

Source & flagged code

7 flagged

package.jsonView file

Lines 1-28json

2 "name": "@toothfairyai/tfcode",

3 "version": "2.0.2",

4 "bin": {

5 "tfcode": "./bin/tfcode.js"

6 },

7 "scripts": {

8 "postinstall": "node ./postinstall.mjs"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L8

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L8

9 },

10 "license": "MIT",

11 "optionalDependencies": {

12 "@toothfairyai/tfcode-linux-arm64": "2.0.2",

13 "@toothfairyai/tfcode-windows-x64": "2.0.2",

14 "@toothfairyai/tfcode-linux-x64-baseline-musl": "2.0.2",

15 "@toothfairyai/tfcode-darwin-x64-baseline": "2.0.2",

16 "@toothfairyai/tfcode-linux-x64-musl": "2.0.2",

17 "@toothfairyai/tfcode-windows-x64-baseline": "2.0.2",

18 "@toothfairyai/tfcode-linux-arm64-musl": "2.0.2",

19 "@toothfairyai/tfcode-windows-arm64": "2.0.2",

20 "@toothfairyai/tfcode-linux-x64": "2.0.2",

21 "@toothfairyai/tfcode-darwin-x64": "2.0.2",

22 "@toothfairyai/tfcode-linux-x64-baseline": "2.0.2",

23 "@toothfairyai/tfcode-darwin-arm64": "2.0.2"

24 },

25 "engines": {

26 "node": ">=18"

27 },

28 "homepage": "https://toothfairyai.com/developers/tfcode",

python/tf_sync/config.pyView file

•path = python/tf_sync/config.py kind = build_helper sizeBytes = 7012 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

python/tf_sync/config.pyView on unpkg

bin/tfcode.jsView file

•matchType = normalized_sha256 matchedPackage = @toothfairyai/tfcode@2.5.11 matchedPath = bin/tfcode.js matchedIdentity = npm:QHRvb3RoZmFpcnlhaS90ZmNvZGU:2.5.11 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/tfcode.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 4a53b45520011c93 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @toothfairyai/tfcode@2.2.6 matchedPath = bin/tfcode.js matchedIdentity = npm:QHRvb3RoZmFpcnlhaS90ZmNvZGU:2.2.6 similarity = 1.000 shingleOverlap = 2 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

bin/tfcode.jsView on unpkg

postinstall.mjsView file

•matchType = normalized_sha256 matchedPackage = @toothfairyai/tfcode@2.2.6 matchedPath = postinstall.mjs matchedIdentity = npm:QHRvb3RoZmFpcnlhaS90ZmNvZGU:2.2.6 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.

postinstall.mjsView on unpkg

•matchType = previous_version_dangerous_delta matchedPackage = @toothfairyai/tfcode@2.5.13 matchedIdentity = npm:QHRvb3RoZmFpcnlhaS90ZmNvZGU:2.5.13 similarity = 0.500 summary = stored previous version shares package body but lacks this dangerous source file

High

Previous Version Dangerous Delta

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

postinstall.mjsView on unpkg

Source & flagged code

7 flagged · loading source

package.jsonView file

•scripts.postinstall = node ./postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node ./postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

python/tf_sync/config.pyView file

•path = python/tf_sync/config.py kind = build_helper sizeBytes = 7012 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

python/tf_sync/config.pyView on unpkg

Findings

5 High5 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighKnown Malware Source Similaritybin/tfcode.js

HighKnown Malware Source Similaritypostinstall.mjs

HighKnown Malware Source Fingerprint Signaturebin/tfcode.js

HighPrevious Version Dangerous Deltapostinstall.mjs

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumShips Build Helperpython/tf_sync/config.py

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to @toothfairyai/tfcode@2.0.2.

See all versions of @toothfairyai/tfcode for other recorded verdicts.

Review the evidence and your use of @toothfairyai/tfcode@2.0.2 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: 2026-09-17 08:48:37.388Z (UTC).

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