x402 Package Advisories
dev.workers.microtools-x402.x402-package-advisories/package-advisoriesx402-package-advisories.microtools-x402.workers.devstreamable-httpv0.1.0Scanned
Package vuln advisories from OSV.dev: CVEs, severity, fixes, manifest audit. Pay per call via x402.
5 tools: 4 change things and 1 only read.
- Reads private data · 0
- Reads text others write · 0
- Can send data out · 0
- No findings
Anlyon alternative
4 of these tools change something. Run those as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
5 tools
Changes things 4Claude Code: ask
healthFree health check.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Free health check. Returns service status, version, tool prices, network and the plain-HTTP x402 endpoints.
manifest_auditAudit up to 50 dependencies in one call (OSV.dev querybatch).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Audit up to 50 dependencies in one call (OSV.dev querybatch). Input: items [{ecosystem,name,version}], or packages "npm:lodash@4.17.15,PyPI:django@3.2.0", or a manifest: package.json text (dependencies, devDependencies, optionalDependencies; range minimum used) or requirements.txt text (name==version lines). You can also POST the raw package.json or requirements.txt as the body. Returns per-package vulnerable flag, vuln count, max severity, max CVSS v3, recommended upgrade and advisory list (id, CVE, severity, score, summary, fix), plus totals by severity, unique vulns and skipped entries. Vulnerability data from OSV.dev (CC-BY 4.0); package metadata from deps.dev. Bad input and upstream errors are not charged. Costs $0.01 USDC per call via x402.
package_advisoriesSecurity advisories for one open-source package version (npm, PyPI, Go, Maven, crates.io, NuGet, RubyGems, Packagist, Pub, Hex...).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Security advisories for one open-source package version (npm, PyPI, Go, Maven, crates.io, NuGet, RubyGems, Packagist, Pub, Hex...). Returns a verdict (vulnerable yes/no, vuln count, max severity, max CVSS v3 score, counts by severity, recommended upgrade version re-checked against OSV, latest stable version and whether it is affected) plus every advisory: OSV/GHSA id, CVE aliases, summary, severity label, CVSS v3 score (computed from the vector) and v4 vector, affected ranges, fixed versions, the fix for this version, published/modified dates and references. Duplicate records (GHSA vs PYSEC/GO ids with the same CVE) are merged. Also returns the version's licenses, publish date, deprecation and dependency counts from deps.dev. Omit version to check the latest stable release. Vulnerability data from OSV.dev (CC-BY 4.0); package metadata from deps.dev. Unknown packages/versions, bad input and upstream errors are not charged. Costs $0.003 USDC per call via x402.
vuln_detailsFull OSV record for one vulnerability id (GHSA-..., CVE-..., PYSEC-..., GO-..., RUSTSEC-..., OSV-...): details, aliases, related ids, every affected package with ranges and version…No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Full OSV record for one vulnerability id (GHSA-..., CVE-..., PYSEC-..., GO-..., RUSTSEC-..., OSV-...): details, aliases, related ids, every affected package with ranges and versions, references, credits, database_specific fields, plus a normalized severity label and computed CVSS v3 score. Vulnerability data from OSV.dev (CC-BY 4.0); package metadata from deps.dev. Unknown ids and upstream errors are not charged. Costs $0.001 USDC per call via x402.
Only reads 1Show 1 read-only tool
pingPaid connectivity test: returns ok and a server timestamp.No findings
Why it is in this group
- The name "ping" says "ping": a word for reading.
Description, as the server wrote it Paid connectivity test: returns ok and a server timestamp. Use it to check that your x402 payment flow works end to end. Costs $0.001 USDC per call via x402.
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write0
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out0
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 0.1.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http package-advisories https://x402-package-advisories.microtools-x402.workers.dev/mcpclaude mcp add --transport http package-advisories https://x402-package-advisories.microtools-x402.workers.dev/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__package-advisories__ping"
],
"ask": [
"mcp__package-advisories__package_advisories",
"mcp__package-advisories__manifest_audit",
"mcp__package-advisories__vuln_details",
"mcp__package-advisories__health"
],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as package-advisories. Review it before you use it.
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/dev.workers.microtools-x402.x402-package-advisories/package-advisories/verify?hash=a9787433ca771b2b01b66b42d97b625ed7f48cb5559d25427940ad7e77231288" | jq -e '.changed == false'Pinned hash a9787433ca77, from Nov 3, 2026, 08:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/dev.workers.microtools-x402.x402-package-advisories/package-advisories/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/dev.workers.microtools-x402.x402-package-advisories/package-advisories)Source: MCP Registry. Synced Nov 3, 2026, 09:17 UTC.