# @nestjs/core npm Package Artifact Integrity Metadata

> @nestjs/core 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 2026-10-21).

Returns published artifact integrity metadata (checksums, hashes, publish info) for a specific version of the @nestjs/core npm package to support integration and upgrade planning.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-npm-nestjs-core-artifact-integrity?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nestjs-core-npm-package-artifact-integrity-metadata-ee8196fb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eTAi21yaZ5v6D4aaHFhMT

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 nestjs-core-npm-package-artifact-integrity-metadata-ee8196fb -d '<json body>'
```

Example prompt: Can you pull the artifact integrity metadata for @nestjs/core version 10.3.0 from the npm registry so I can verify its checksums before upgrading?

## When to prefer this

Use this endpoint when you specifically need artifact integrity data (checksums, hashes, publish provenance) for @nestjs/core from the npm registry — particularly for security audits, supply chain verification, or upgrade planning workflows. Prefer this over generic npm API calls when you need a paid, reliable, structured response without rate-limit concerns.

## Known failure modes

- Unknown or unpublished version returns a 404 or empty result
- Invalid package name format returns a validation error
- Network or registry timeout returns a 5xx error
- Requesting a version that was unpublished or deprecated may return incomplete metadata

## How this service works

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

## Output

Returns structured artifact integrity metadata from the npm registry for @nestjs/core, including checksums (shasum, integrity hashes), publish timestamps, tarball URLs, and version-specific registry metadata useful for verifying package authenticity and planning upgrades.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "package": {
   "type": "string",
   "default": "@nestjs/core",
   "maxLength": 150
  },
  "version": {
   "type": "string",
   "maxLength": 100
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nestjs-core-npm-package-artifact-integrity-metadata-ee8196fb/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)