registry / hopper-code / 0.1.0
hopper-code@0.1.0
Put Hopper's coding model into OpenCode, Claude Code and Codex with one command.
AI Security Review
scanned 6d ago · by lpm-firewall-aiThe executable is a user-run setup CLI that sends Hopper keys to Hopper’s own service and writes the selected agents’ configuration. The flagged process output is used for local verification, and no unrelated collection or exfiltration was identified.
Static reason
One or more suspicious static signals were detected.
Trigger
Explicit invocation of hopper-code or hopper; there are no install hooks or import entry points.
Impact
Expected setup and verification for the chosen coding agents; no unrelated credential transfer or command-output exfiltration was identified.
Mechanism
Validates a Hopper key with api.withhopper.com, supports interactive sign-in through withhopper.com, saves the key, and configures selected coding agents to use Hopper. Optional verification sends a fixed prompt through an installed agent.
AI rationale
The executable is a user-run setup CLI that sends Hopper keys to Hopper’s own service and writes the selected agents’ configuration. The flagged process output is used for local verification, and no unrelated collection or exfiltration was identified.
Evidence
~/.hopper/key~/.hopper/print-key.cjs~/.hopper/hopper-code-state.json~/.config/opencode/opencode.json~/.claude/settings.json~/.codex/config.toml
Network endpoints2
api.withhopper.comwithhopper.com
Decision evidence
public snapshotAI called this Clean at 97.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- The manifest exposes bin/withhopper.mjs as an explicitly invoked CLI and declares no install lifecycle scripts.
- A supplied, environment-provided, or saved Hopper key is sent as a Bearer token to the Hopper models endpoint for validation.
- Sign-in asks for an email and uses Hopper’s browser-based claim flow to obtain a Hopper key.
- The optional verification runs an installed agent with a fixed one-word prompt; the captured result is used locally to report success or failure.
- The CLI saves the key and configures the selected agents to use Hopper, matching the package’s stated purpose.
Evidence against
Behavioral surface
ChildProcessEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsUrlStrings
Source & flagged code
6 flaggedbin/withhopper.mjsView file
8L9: import { spawn, spawnSync } from "node:child_process";
L10: import fs from "node:fs";
High
250`// Prints the Hopper key for Codex (auth.command). Written by hopper-code.\n` +
L251: `process.stdout.write(require("fs").readFileSync(require("path").join(__dirname, "key"), "utf8").trim());\n`,
L252: );
...
L255: function gitEmail() {
L256: const r = spawnSync("git", ["config", "user.email"], { stdio: "pipe", shell: isWin });
L257: const email = r.status === 0 ? String(r.stdout).trim() : "";
...
L261: async function postJson(url, body) {
L262: const res = await fetch(url, {
L263: method: "POST",
High
Command Output Exfiltration
Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.
bin/withhopper.mjsView on unpkg · L2508L9: import { spawn, spawnSync } from "node:child_process";
L10: import fs from "node:fs";
...
L25: const VERSION = "0.1.0";
L26: const SITE = process.env.HOPPER_SITE_URL ?? "https://withhopper.com";
L27: const API = process.env.HOPPER_API_URL ?? "https://api.withhopper.com";
L28: const isWin = process.platform === "win32";
L29: const HOME = os.homedir();
L30: const HOPPER_DIR = path.join(HOME, ".hopper");
...
L60:
L61: const color = process.stdout.isTTY && !process.env.NO_COLOR;
L62: const paint = (code) => (s) => (color ? `\x1b[${code}m${s}\x1b[0m` : s);
High
Sandbox Evasion Gated Capability
Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.
bin/withhopper.mjsView on unpkg · L8250Trigger-reachable command-output exfiltration chain: manifest.bin -> bin/withhopper.mjs
L250: `// Prints the Hopper key for Codex (auth.command). Written by hopper-code.\n` +
L251: `process.stdout.write(require("fs").readFileSync(require("path").join(__dirname, "key"), "utf8").trim());\n`,
L252: );
...
L255: function gitEmail() {
L256: const r = spawnSync("git", ["config", "user.email"], { stdio: "pipe", shell: isWin });
L257: const email = r.status === 0 ? String(r.stdout).trim() : "";
...
L261: async function postJson(url, body) {
L262: const res = await fetch(url, {
L263: method: "POST",
High
Trigger Reachable Command Output Exfiltration
A manifest entrypoint or package-local install chain reaches command-output exfiltration behavior.
bin/withhopper.mjsView on unpkg · L250bin/withhopper.mjs#virtual:normalized:round1View file
1#!/usr/bin/env node
L2: // hopper-code: one command that puts Hopper"s coding model into the coding\n// agents a developer already has (OpenCode, Claude Code, Codex). Signs in\n// through the browser (aut...
L3:
High
Same File Env Network Execution
A single source file combines environment access, network access, and code or shell execution; review context before blocking.
bin/withhopper.mjs#virtual:normalized:round1View on unpkg · L1•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1
High
Semantic Analysis Limited
A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.
bin/withhopper.mjs#virtual:normalized:round1View on unpkgFindings
7 High3 Medium4 Low
HighChild Processbin/withhopper.mjs
HighShell
HighSame File Env Network Executionbin/withhopper.mjs#virtual:normalized:round1
HighCommand Output Exfiltrationbin/withhopper.mjs
HighSandbox Evasion Gated Capabilitybin/withhopper.mjs
HighTrigger Reachable Command Output Exfiltrationbin/withhopper.mjs
HighSemantic Analysis Limitedbin/withhopper.mjs#virtual:normalized:round1
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to hopper-code@0.1.0.
See all versions of hopper-code for other recorded verdicts.
- Review the evidence and your use of hopper-code@0.1.0 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.