---
name: "xpay-quakelive-check-pvs"
description: "Check PVS (Potentially Visible Set) visibility between two world positions in a BSP map. Returns whether the BSP considers the two points mutually visible — i.e. whether the engine would have sent entity updates between them. Also returns the PVS cluster indices for both points. PVS is a conservative over-approximation: visible=true means updates were sent, not guaranteed line-of-sight. Accepts a bare map name, 'maps/<name>.bsp', or a direct path — see get_bsp_info for lookup rules."
version: "1.0.0"
price: "$0.02/call"
provider: "Mcps"
---

# Check Pvs

Check PVS (Potentially Visible Set) visibility between two world positions in a BSP map. Returns whether the BSP considers the two points mutually visible — i.e. whether the engine would have sent entity updates between them. Also returns the PVS cluster indices for both points. PVS is a conservative over-approximation: visible=true means updates were sent, not guaranteed line-of-sight. Accepts a bare map name, 'maps/<name>.bsp', or a direct path — see get_bsp_info for lookup rules.

**Provider:** Mcps
**Price:** $0.02/call
**Pricing model:** Flat rate per call

## When to Use

Use this tool when you need to check pvs (potentially visible set) visibility between two world positions in a bsp map. returns whether the bsp considers the two points mutually visible — i.e. whether the engine would have sent entity updates between them. also returns the pvs cluster indices for both points. pvs is a conservative over-approximation: visible=true means updates were sent, not guaranteed line-of-sight. accepts a bare map name, 'maps/<name>.bsp', or a direct path — see get_bsp_info for lookup rules.. This is part of the Mcps provider on xpay✦.

## MCP Connection

Connect to xpay✦ to access this tool (and 87+ others):

```json
{
  "mcpServers": {
    "xpay": {
      "url": "https://mcp.xpay.sh/mcp?key=YOUR_API_KEY"
    }
  }
}
```

For Claude Code:
```bash
claude mcp add --transport http xpay "https://mcp.xpay.sh/mcp?key=YOUR_API_KEY"
```

## How to Execute

Use the xpay✦ meta-tools to run this tool:

1. **`xpay_details`** — Get full input schema: `xpay_details("quakelive/check_pvs")`
2. **`xpay_run`** — Execute: `xpay_run("quakelive/check_pvs", { ...inputs })`

## Input Parameters

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `z1` | number | Yes | Z coordinate of the first point |
| `y1` | number | Yes | Y coordinate of the first point |
| `z2` | number | Yes | Z coordinate of the second point |
| `x1` | number | Yes | X coordinate of the first point |
| `y2` | number | Yes | Y coordinate of the second point |
| `x2` | number | Yes | X coordinate of the second point |
| `map` | string | Yes | Map name (e.g. 'campgrounds') or path to a .bsp file. A bare name or 'maps/<name>.bsp' is searched inside pk3 archives under WOLFCAMQL_BASEPATH. An absolute path or a path relative to MAP_DIR is read directly. |

## Pricing

- **Cost:** $0.02/call
- **Balance check:** Use `xpay_balance` to check remaining credits
- Get your API key at [xpay.tools](https://xpay.tools/account/settings/api-keys/) — $5 free credits included

## Related Skills

- [Mcps (all tools)](https://xpay.tools/skills/quakelive/SKILL.md) — 88 tools
- [Add Player](https://xpay.tools/skills/quakelive/add-player/SKILL.md) — $0.00/call
- [Add Raw Snapshot](https://xpay.tools/skills/quakelive/add-raw-snapshot/SKILL.md) — $0.00/call
- [Add Server Command](https://xpay.tools/skills/quakelive/add-server-command/SKILL.md) — $0.00/call
- [Analyze Demo](https://xpay.tools/skills/quakelive/analyze-demo/SKILL.md) — $0.02/call
- [Award Medal](https://xpay.tools/skills/quakelive/award-medal/SKILL.md) — $0.02/call

## Links

- Tool page: https://xpay.tools/quakelive/check-pvs/
- Provider: https://xpay.tools/quakelive/
- All tools: https://xpay.tools/explore