# Express npm Package Source and Documentation Links

> Express npm Package Source and Documentation Links is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Returns live npm registry source code and documentation links for the Express npm package (or any specified package).

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/demand-next-package-npm-express-source-links?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/express-npm-package-source-and-documentation-links-b3a11547
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5N7JmE_QUqAld--PSLbx6

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 express-npm-package-source-and-documentation-links-b3a11547 -d '<json body>'
```

Example prompt: Can you grab the live source code repository link and official documentation URL for the Express npm package?

## When to prefer this

Use this endpoint when you need a quick, up-to-date lookup of the official source repository and documentation links for an npm package, especially Express. Prefer it over scraping npm.com manually or hardcoding URLs that may become stale.

## Known failure modes

- Package not found on npm registry — returns error or empty links
- Package name typo results in wrong package links being returned
- Registry temporarily unavailable causes request timeout
- Package exists but has no source or documentation URLs listed in its npm metadata

## How this service works

Express Source and documentation links: Live npm Registry source and documentation links for Express. Package name can be overridden.

## Output

Returns the live npm registry source code URL (e.g. GitHub repository) and documentation URL for the specified npm package, pulled directly from the npm registry at call time.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "package": {
   "type": "string",
   "default": "express",
   "description": "Package name to inspect."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/express-npm-package-source-and-documentation-links-b3a11547/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)