registry / twzrd-x402-gate / 0.12.5
twzrd-x402-gate@0.12.5
Buyer-side x402 trust gate: free preflight before signing USDC on Solana + Base mainnet (eip155:8453). By default no signing if preflight is down; TWZRD_FAIL_OPEN overrides. Other EVM: unscored.
AI Security Review
scanned 5d ago · by lpm-firewall-aiThe install lifecycle hook is release verification only, and the flagged subprocess and network behavior belongs to purpose-specific commands rather than install or import-time activity. The refusal flow uses an ephemeral signer that fails before signing, and no malicious behavior was found.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
The package's exported modules do not invoke the reviewed CLI flows on import; network and subprocess activity is tied to explicit commands or API use.
Impact
No unauthorized credential collection, account action, or install-time behavior was identified. The safe-fetch command may run the configured AgentCash package and participate in a payment after user invocation.
Mechanism
The safe-fetch command gates a user-supplied URL before delegating payment fetching to AgentCash. The doctor runs a local refusal proof; the refusal demo contacts the package's own fixture when explicitly invoked.
AI rationale
The install lifecycle hook is release verification only, and the flagged subprocess and network behavior belongs to purpose-specific commands rather than install or import-time activity. The refusal flow uses an ephemeral signer that fails before signing, and no malicious behavior was found.
Network endpoints2
intel.twzrd.xyz/v1/intel/preflightintel.twzrd.xyz/v1/intel/refuse-fixture
Decision evidence
public snapshotAI called this Clean at 94.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- The prepublishOnly hook runs release verification; no install lifecycle hook is declared.
- The safe-fetch CLI accepts a URL from its command-line arguments before performing a fetch.
- The refusal doctor describes its proof as offline and spending nothing.
- The refusal demo uses an ephemeral signer that throws if signing is attempted.
Evidence against
- When explicitly run, safe-fetch can invoke npx to run agentcash@latest as part of its payment-fetch workflow.
- The refusal demo makes a preflight request to intel.twzrd.xyz and fetches its own fixture URL when invoked.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetwork
HighEntropyStringsUrlStrings
Source & flagged code
5 flaggedbin/twzrd-safe-fetch.jsView file
5*/
L6: import { spawnSync } from "node:child_process";
L7: import { existsSync } from "node:fs";
High
Child Process
Package source references child process execution.
bin/twzrd-safe-fetch.jsView on unpkg · L5bin/twzrd-gate-eval-refuse.jsView file
28const pkgRoot = join(__dirname, "..");
L29: const require = createRequire(import.meta.url);
L30:
Medium
Dynamic Require
Package source references dynamic require/import behavior.
bin/twzrd-gate-eval-refuse.jsView on unpkg · L28bin/twzrd-gate-doctor.jsView file
33// tsx resolves `src` by absolute path, so the user's cwd is safe to keep.
L34: const r = spawnSync("npx", ["--yes", "tsx", src, ...process.argv.slice(2)], {
L35: stdio: "inherit",
Findings
1 Critical3 High4 Medium5 Low
CriticalPrevious Version Dangerous Deltadist/safe-fetch.js
HighChild Processbin/twzrd-safe-fetch.js
HighRuntime Package Installbin/twzrd-gate-doctor.js
HighSemantic Analysis Limiteddist/evidence-verify.js#virtual:normalized:round1
MediumDynamic Requirebin/twzrd-gate-eval-refuse.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to twzrd-x402-gate@0.12.5.
See all versions of twzrd-x402-gate for other recorded verdicts.
- Review the evidence and your use of twzrd-x402-gate@0.12.5 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.