# TypeScript NPM Package Artifact Integrity Metadata

> TypeScript 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).

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

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-npm-typescript-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/typescript-npm-package-artifact-integrity-metadata-a9aa8b3a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rwqsT15X_YvoGWd2dQtXZ

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 typescript-npm-package-artifact-integrity-metadata-a9aa8b3a -d '<json body>'
```

Example prompt: Can you pull the artifact integrity metadata for the typescript npm package, specifically for version 5.4.5, so I can verify the checksum before we upgrade?

## When to prefer this

Use this endpoint when you need to verify the integrity of a specific typescript npm package version — particularly for supply chain security checks, pre-upgrade validation, or automated CI/CD pipelines that require checksum or signature verification against the npm registry. Prefer this over manual npm registry lookups when integrating integrity checks into automated agent workflows.

## Known failure modes

- Unknown or misspelled package name returns an error or empty result
- Requested version does not exist in the npm registry
- Registry metadata temporarily unavailable due to upstream npm outage
- Package name exceeds 150-character limit
- Version string exceeds 100-character limit

## How this service works

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

## Output

Returns registry metadata for the specified npm package (defaulting to 'typescript') including artifact integrity information such as checksums, signatures, and version-specific publication data useful for upgrade planning and supply chain verification.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/typescript-npm-package-artifact-integrity-metadata-a9aa8b3a/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)