# pg npm Package Artifact Integrity Metadata

> pg 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).

Fetches published artifact integrity metadata (checksums, signatures, file hashes) for the npm package 'pg' (node-postgres) from the registry, supporting integration and upgrade planning.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-npm-pg-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/pg-npm-package-artifact-integrity-metadata-f7503b7b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HpY_MJuZlJUqu5hNtg1WH

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 pg-npm-package-artifact-integrity-metadata-f7503b7b -d '<json body>'
```

Example prompt: Can you pull the published artifact integrity metadata for the pg npm package version 8.11.3 so I can verify the checksums before we upgrade our database driver?

## When to prefer this

Use this endpoint when you need to verify the integrity of the 'pg' (node-postgres) npm package artifact before installation or upgrade — particularly in security-sensitive or supply-chain audit contexts. Prefer this over manually querying the npm registry when you want a paid, reliable, structured metadata response with minimal setup, or when operating within an x402-compatible agent workflow.

## Known failure modes

- Unknown package name returns a 404 or empty result
- Unpublished or yanked version returns no metadata
- Malformed version string may result in a validation error
- Network or registry unavailability causes a timeout or 5xx error
- Payment failure (x402) blocks the request before it reaches the registry

## How this service works

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

## Output

Returns registry-sourced artifact integrity metadata for the specified npm package (defaulting to 'pg') and version, including fields such as integrity hashes (SHA-512), shasum, file size, and other published artifact provenance data useful for security auditing and upgrade planning.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pg-npm-package-artifact-integrity-metadata-f7503b7b/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)