# date-fns NPM Package Runtime and Platform Constraints

> date-fns NPM Package Runtime and Platform Constraints 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 runtime and platform compatibility constraints for the date-fns npm package (or a specified version) from the npm registry.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-npm-date-fns-runtime-constraints?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/date-fns-npm-package-runtime-and-platform-constraints-a229e70d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Bo3O60fg075-yMwUiC7wU

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 date-fns-npm-package-runtime-and-platform-constraints-a229e70d -d '<json body>'
```

Example prompt: What are the runtime and platform constraints for date-fns version 3.6.0? I want to know which Node.js versions and environments it officially supports before I upgrade.

## When to prefer this

Use this endpoint when you specifically need runtime and platform compatibility metadata for the date-fns npm package — especially before upgrading or integrating it into a project. Prefer this over general npm registry lookups if you want a focused, pre-parsed view of date-fns constraints without processing raw registry JSON yourself.

## Known failure modes

- Invalid package version returns an error or empty result
- Non-existent version string may return a 404 or not-found response
- Rate limits or registry downtime may cause request failures
- Malformed package name (over 150 chars) may be rejected by schema validation

## How this service works

date-fns Runtime and platform constraints: Runtime and platform constraints for npm package date-fns. Inspect registry metadata for integration and upgrade planning. Package and version can be overridden.

## Output

Returns registry metadata describing the runtime and platform constraints for the specified date-fns package version, including supported Node.js engine versions, browser compatibility, peer dependency requirements, and other environment-specific constraints useful for integration and upgrade planning.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/date-fns-npm-package-runtime-and-platform-constraints-a229e70d/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)