# Express npm Declared Dependencies

> Express npm Declared Dependencies 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).

Fetches the live declared dependencies list for the Express npm package (or any specified package) from the npm registry.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/demand-next-package-npm-express-dependency-list?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-declared-dependencies-c4623b92
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XDNG53jZMDown_WPc0UQz

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-declared-dependencies-c4623b92 -d '<json body>'
```

Example prompt: Can you pull up the declared dependencies for the express npm package from the live npm registry?

## When to prefer this

Use this endpoint when you need a quick, live lookup of declared npm dependencies for a specific package — especially when you want the current registry state rather than a local package.json. Ideal for dependency auditing, comparative analysis between packages, or automating inventory tasks without needing to install packages locally.

## Known failure modes

- Package not found on npm registry — returns error or empty result
- Invalid package name format — may return validation error
- npm registry unavailable or rate-limited — timeout or upstream error
- Payment not processed — x402 payment required error

## How this service works

Express Declared dependencies: Live npm Registry declared dependencies for Express. Package name can be overridden.

## Output

A list of declared npm dependencies for the specified package (defaulting to 'express'), sourced live from the npm registry. Typically includes package names and their declared version ranges as they appear in the package's dependencies field.

## 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-declared-dependencies-c4623b92/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)