@jive-sh/skill-sync@0.4.13
Keeps one skills directory identical across every machine you work on.
AI Security Review
scanned 4d ago · by lpm-firewall-aiThe package’s stated sync behavior and sign-in flow are consistent with its purpose, and the usage reporting is disclosed. However, it automatically sends account-linked usage and cost information during a signed-in session, with no usage-specific opt-out found, so this merits a telemetry warning.
Static reason
One or more suspicious static signals were detected.
Trigger
The user signs in with `skill-sync login`; reporting begins when the daemon connects and repeats while connected.
Impact
The service dashboard can associate account identifiers with usage limits and, for some Claude accounts, recent session cost estimates.
Mechanism
The daemon reads usage records from local Claude and Codex account files, then sends changed reports over its authenticated WebSocket.
AI rationale
The package’s stated sync behavior and sign-in flow are consistent with its purpose, and the usage reporting is disclosed. However, it automatically sends account-linked usage and cost information during a signed-in session, with no usage-specific opt-out found, so this merits a telemetry warning.
Evidence
src/daemons/skill-sync-daemon.tssrc/internal/usage.tssrc/internal/config.tsREADME.md~/.claude.json~/.claude-<name>/.claude.json~/.claude-<name>/projects/*.jsonl~/.codex-<name>/sessions/~/.jive/skill-sync-token.json
Network endpoints2
wss://skill-sync.jive.sh/daemonskill-sync.jive.sh (default endpoint; configurable)
Decision evidence
public snapshotAI called this Suspicious at 84.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- After a user signs in, the daemon reads usage data for every detected Claude and Codex account and sends it over its service connection.
- Usage reports include account identifiers and usage or cost figures, and are sent when changed and periodically while connected.
- The README discloses this reporting, but no usage-specific opt-out appears in the inspected source.
- The daemon’s service connection is gated on an active signed-in session; sign-in is an explicit CLI action.
Evidence against
- The package documents its postinstall daemon registration and automatic startup as part of the sync service.
- The README says only selected skills sync, and newly detected folders start with syncing off.
- The usage reader extracts usage figures from tool-written files; the inspected flow does not send credentials or session contents.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetworkWebSocket
Source & flagged code
6 flaggedpackage.jsonView file
•scripts.postinstall = node ./install.cjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = node ./install.cjs
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkginstall.cjsView file
3Manifest entrypoint (scripts.postinstall) carries capability families absent from dist/build output: environment+network, execution+network
L3: // CommonJS, not an ES module: a launcher is an extensionless file, and Node 14 and 16 refuse to load an
L4: // extensionless ES module in a "type": "module" package (ERR_UNKNOWN_FILE_EXTENSION; Node 18.20 accepts it). bin/package.json marks this directory
L5: // "commonjs", and the install script is install.cjs, so both load the same way on every Node and on Bun.
L6: const { spawnSync } = require("child_process");
L7: const {
...
L81: const packageJsonPath = require.resolve(`${PLATFORM_PACKAGES[platformKey]}/package.json`);
L82: const packageJson = JSON.parse(readFileSync(packageJsonPath, "utf-8"));
L83: return {
...
L97: * package manager: on an
Findings
4 High5 Medium4 Low
HighInstall Time Lifecycle Scriptspackage.json
HighEntrypoint Build Divergenceinstall.cjs
HighTrigger Reachable Persistenceinstall.cjs
HighSemantic Analysis Limitedbin/skill-sync#virtual:normalized:round1
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumNetwork
MediumEnvironment Vars
MediumInstall Persistenceinstall.cjs
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @jive-sh/skill-sync@0.4.13.
See all versions of @jive-sh/skill-sync for other recorded verdicts.
- Review the evidence and your use of @jive-sh/skill-sync@0.4.13 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: .
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