MCP, MCP server
Fabler x402 Tools
Free catalog and 2,048-character secret-scan preview for Fabler's x402 agent tools on Base.
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit 8f7db9dae9df, unchanged since the check below.
NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ
Why this grade
- NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
examples/buyer-sim/buyer.mjs, line 32
// export exposing fetch(request, env)>] - SECRETS_PATH_DOTENV Low
Mentions a .env file.
examples/buyer-sim/README.md, line 78
that ever held or will hold real funds. Put its private key in `.env` (not - SECRETS_ENV_READ Note
Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.
examples/buyer-sim/buyer.mjs, line 226
const key = (process.env.X402_TEST_BUYER_KEY || "").trim();
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Pass
No shell or command execution found, and no extra permission was declared.
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
examples/buyer-sim/buyer.mjs, line 32
// export exposing fetch(request, env)>]
examples/buyer-sim/buyer.mjs, line 151
console.error(`${entryPath} has no default export with a fetch(request, env) method`);
examples/buyer-sim/buyer.mjs, line 158
const res = await worker.fetch(new Request(`${BASE}/products.json`), env);
Show more
examples/buyer-sim/buyer.mjs, line 167
const challengeRes = await worker.fetch(new Request(`${BASE}${route.path}`, requestInit(route)), env);
examples/buyer-sim/buyer.mjs, line 190
const underpaidRes = await worker.fetch(
examples/buyer-sim/buyer.mjs, line 197
const paidRes = await worker.fetch(
examples/buyer-sim/buyer.mjs, line 210
const replayRes = await worker.fetch(
examples/buyer-sim/fixture-worker.mjs, line 37
// Exports a standard Workers `{ fetch(request) }` handler, so buyer.mjs's --mock
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
examples/buyer-sim/buyer.mjs, line 226
const key = (process.env.X402_TEST_BUYER_KEY || "").trim();
mcp/tools.js, line 66
return (process.env.X402_BUYER_PRIVATE_KEY || "").trim();
examples/buyer-sim/README.md, line 78
that ever held or will hold real funds. Put its private key in `.env` (not
Show more
snippets/node-viem.mjs, line 14
const key = process.env.X402_PRIVATE_KEY;
examples/buyer-sim/README.md, line 79
in this worktree - the buyer-sim lane never has `.env`) as
examples/buyer-sim/README.md, line 105
X402_TEST_BUYER_KEY=<from .env> node buyer.mjs --testnet --url=https://<staging-worker-url>
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Pass
No encoded or minified payload found.
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit 8f7db9dae9df. can reach a host that is not written as a fixed address. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 8f7db9dae9dfef5e76d910446fdfbae98167879a
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