# x402 Package Advisories (remote · x402-package-advisories.microtools-x402.workers.dev)

Package vuln advisories from OSV.dev: CVEs, severity, fixes, manifest audit. Pay per call via x402.

- Trust score: 60/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `x402-package-advisories.microtools-x402.workers.dev`: 60/100 (this document), [markdown](https://verifymcp.io/servers/dev-workers-microtools-x402-x402-package-advisories-package-advisories/x402-package-advisories.md), [page](https://verifymcp.io/servers/dev-workers-microtools-x402-x402-package-advisories-package-advisories/x402-package-advisories)

## Channel facts

- Endpoint: `https://x402-package-advisories.microtools-x402.workers.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 5 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 406, which proves neither a plaintext path nor enforcement.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 70/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 862 tokens (~172/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the x402 Package Advisories MCP server?

x402 Package Advisories is a hosted endpoint at https://x402-package-advisories.microtools-x402.workers.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http dev-workers-microtools-x402-x402-package-advisor 'https://x402-package-advisories.microtools-x402.workers.dev/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "dev-workers-microtools-x402-x402-package-advisor": {
      "url": "https://x402-package-advisories.microtools-x402.workers.dev/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "dev-workers-microtools-x402-x402-package-advisor": {
      "type": "http",
      "url": "https://x402-package-advisories.microtools-x402.workers.dev/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.dev-workers-microtools-x402-x402-package-advisor]
url = "https://x402-package-advisories.microtools-x402.workers.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-workers-microtools-x402-x402-package-advisor": {
      "type": "remote",
      "url": "https://x402-package-advisories.microtools-x402.workers.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dev-workers-microtools-x402-x402-package-advisor --url 'https://x402-package-advisories.microtools-x402.workers.dev/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  dev-workers-microtools-x402-x402-package-advisor:
    url: "https://x402-package-advisories.microtools-x402.workers.dev/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "dev-workers-microtools-x402-x402-package-advisor": {
      "Transport": "http",
      "Url": "https://x402-package-advisories.microtools-x402.workers.dev/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add dev-workers-microtools-x402-x402-package-advisor -t streamable-http -u 'https://x402-package-advisories.microtools-x402.workers.dev/mcp'
```

### Other

```json
{
  "mcpServers": {
    "dev-workers-microtools-x402-x402-package-advisor": {
      "type": "http",
      "url": "https://x402-package-advisories.microtools-x402.workers.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-05 (score 60, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-04 (score 59, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-11-03 (score 59)

First indexed and scored.

## MCP tools (5)

### `package_advisories` (~380 tokens)

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.

Input parameters:

- `ecosystem` (string, required): Package ecosystem: npm, PyPI, Go, Maven, crates.io, NuGet, RubyGems, Packagist, Pub, Hex, CRAN, Hackage, SwiftURL, ConanCenter (aliases like pip, cargo, gem, composer accepted)
- `include_withdrawn` (boolean): Include withdrawn advisories (default false)
- `name` (string, required): Package name, e.g. lodash, django, golang.org/x/net, org.apache.logging.log4j:log4j-core
- `version` (string): Exact version, e.g. 4.17.15 (default: latest stable)

### `manifest_audit` (~270 tokens)

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.

Input parameters:

- `items` (array): Array of {ecosystem, name, version} (max 50)
- `manifest` (string): package.json or requirements.txt text
- `packages` (string): Comma list Ecosystem:name@version, e.g. npm:lodash@4.17.15,PyPI:django@3.2.0

### `vuln_details` (~136 tokens)

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.

Input parameters:

- `id` (string, required): OSV id or CVE alias

### `ping` (~46 tokens)

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.

### `health` (~30 tokens)

Free health check. Returns service status, version, tool prices, network and the plain-HTTP x402 endpoints.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/dev-workers-microtools-x402-x402-package-advisories-package-advisories/x402-package-advisories#diagnostics

## Score history

- 2026-11-05: 60
- 2026-11-04: 59
- 2026-11-03: 59

## Common questions

### What is the x402 Package Advisories MCP server?

x402 Package Advisories is an MCP server listed in the public MCP registry as dev.workers.microtools-x402.x402-package-advisories/package…. Package vuln advisories from OSV.dev: CVEs, severity, fixes, manifest audit. Pay per call via x402. This page covers its hosted endpoint (https://x402-package-advisories.microtools-x402.workers.dev/mcp).

### Is the x402 Package Advisories MCP server safe to use?

x402 Package Advisories scores 60 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the x402 Package Advisories MCP server expose?

x402 Package Advisories exposes 5 tools: package_advisories, manifest_audit, vuln_details, ping, health. Their descriptions and schemas cost roughly 862 tokens of context every time the server is loaded.

### Does the x402 Package Advisories MCP server require authentication?

No. We connected to x402 Package Advisories without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the x402 Package Advisories MCP server still maintained?

x402 Package Advisories is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What did VerifyMCP test on the x402 Package Advisories MCP server?

VerifyMCP ran 11 checks on x402 Package Advisories, covering TLS certificate, HSTS header, DNSSEC, Transport and 7 more. 2 items could not be completed, a gap on our side rather than a finding about x402 Package Advisories: Authorization and HTTPS. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- Remote endpoint: https://x402-package-advisories.microtools-x402.workers.dev/mcp
- Website: https://x402-package-advisories.microtools-x402.workers.dev/
- Changelog RSS feed: https://verifymcp.io/servers/dev-workers-microtools-x402-x402-package-advisories-package-advisories/x402-package-advisories.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-workers-microtools-x402-x402-package-advisories-package-advisories/x402-package-advisories/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/dev-workers-microtools-x402-x402-package-advisories-package-advisories/x402-package-advisories.json
- HTML version of this page: https://verifymcp.io/servers/dev-workers-microtools-x402-x402-package-advisories-package-advisories/x402-package-advisories