# WebUpCheck

> Free, on-demand website availability checks for people and AI agents. A result reflects one server's HTTP perspective, not a global outage or full application test.

## Documentation

- [API and MCP guide](https://webupcheck.com/developers): Integration examples, response statuses, rate limits, and limitations.
- [OpenAPI specification](https://webupcheck.com/openapi.json): Machine-readable definition of GET /api/check?url=example.com.
- [Website checker](https://webupcheck.com/): Interactive browser interface.

## Agent interfaces

- [MCP endpoint](https://webupcheck.com/mcp): Stateless Streamable HTTP; POST initialize, tools/list, and tools/call. Tool: check_website. Arguments: {"url":"example.com"}.
- [Example JSON check](https://webupcheck.com/api/check?url=example.com): Results may be cached for 30 seconds. Check checkedAt and cached.

## Usage limits

No API key. Public HTTP(S) hostnames and standard ports only. Approximately 20 requests per minute per client IP per Cloudflare location. Honor HTTP 429 and Retry-After.

Statuses: reachable, blocked, error, unreachable, inconclusive. A blocked check does not mean the website is down. No continuous monitoring, history, browser rendering, or multi-region verification.

## Trust and operator

Operated by Klyrone FZE, UAE. Contact: info@webupcheck.com.
- [Methodology](https://webupcheck.com/methodology): Checking steps, classifications and limitations.
- [Privacy](https://webupcheck.com/privacy): Data handling and optional analytics.