# luxon npm Package Artifact Integrity Metadata

> luxon npm Package Artifact Integrity Metadata is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Retrieves published artifact integrity metadata (checksums, signatures, registry info) for the luxon npm package to support integration and upgrade planning.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-npm-luxon-artifact-integrity?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/luxon-npm-package-artifact-integrity-metadata-1919a870
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dM5rFYqvRjED74pum6fYs

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability luxon-npm-package-artifact-integrity-metadata-1919a870 -d '<json body>'
```

Example prompt: Can you pull the published artifact integrity metadata for the luxon npm package, specifically for version 3.4.4, so I can verify checksums before upgrading our dependency?

## When to prefer this

Use this endpoint when you need structured integrity and registry metadata specifically for the luxon npm package (or a customizable npm package) without manually querying the npm registry. Ideal for automated CI/CD pipelines, dependency auditing workflows, or upgrade planning where verified checksums are needed. Prefer this over direct npm registry calls when operating in an agentic context that uses x402 micropayment-gated APIs.

## Known failure modes

- Requested package version does not exist in the registry — returns not found or empty metadata
- Package name overridden to a non-existent package — registry lookup fails
- npm registry is temporarily unavailable — timeout or upstream error
- Invalid version string format — validation error returned

## How this service works

luxon Published artifact integrity metadata: Published artifact integrity metadata for npm package luxon. Inspect registry metadata for integration and upgrade planning. Package and version can be overridden.

## Output

Returns published artifact integrity metadata from the npm registry for the specified luxon package version, including checksums (shasum, integrity hashes), registry publication details, and other metadata useful for verifying authenticity and planning upgrades.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "package": {
   "type": "string",
   "default": "luxon",
   "maxLength": 150
  },
  "version": {
   "type": "string",
   "maxLength": 100
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/luxon-npm-package-artifact-integrity-metadata-1919a870/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)