# VirWave Breathe (remote · xswebtvkueusdaeboizp.supabase.co)

Calm, animated breathing sessions paced to your breath. Runs locally and collects nothing.

- Trust score: 68/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-26

## Components

- remote · `xswebtvkueusdaeboizp.supabase.co`: 68/100 (this document), [markdown](https://verifymcp.io/servers/virwave-virwave-breathe/functions-v1-breathe.md), [page](https://verifymcp.io/servers/virwave-virwave-breathe/functions-v1-breathe)
- npm · `virwave-breathe`: 65/100, [markdown](https://verifymcp.io/servers/virwave-virwave-breathe/virwave-breathe.md), [page](https://verifymcp.io/servers/virwave-virwave-breathe/virwave-breathe)

## Channel facts

- Endpoint: `https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.2.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-26.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 1 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 77/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 2020 tokens (~336/item across 6 items; 3 tools + 3 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.
  - Supports UI / widget rendering.

## Install

### How do I install the VirWave Breathe MCP server?

VirWave Breathe is a hosted endpoint at https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http virwave-virwave-breathe 'https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe'
```

### Cursor

```json
{
  "mcpServers": {
    "virwave-virwave-breathe": {
      "url": "https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "virwave-virwave-breathe": {
      "type": "http",
      "url": "https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe"
    }
  }
}
```

### Codex

```toml
[mcp_servers.virwave-virwave-breathe]
url = "https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "virwave-virwave-breathe": {
      "type": "remote",
      "url": "https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add virwave-virwave-breathe --url 'https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  virwave-virwave-breathe:
    url: "https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe"
```

### Netclaw

```json
{
  "McpServers": {
    "virwave-virwave-breathe": {
      "Transport": "http",
      "Url": "https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe"
    }
  }
}
```

### Vellum

```bash
assistant mcp add virwave-virwave-breathe -t streamable-http -u 'https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe'
```

### Other

```json
{
  "mcpServers": {
    "virwave-virwave-breathe": {
      "type": "http",
      "url": "https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-26 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-25 (score 67, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-24 (score 67)

First indexed and scored.

## MCP tools (3)

### `list_patterns` (~57 tokens)

List breathing patterns

Lists the VirWave breathing patterns this server can play: phases and seconds, what each rhythm is good for, which shapes can draw it, whether it is hold-free, and any safety note about breath holds. Hold-free patterns are listed first.

### `breathe` (~341 tokens)

Start a breathing session

Creates an animated VirWave breathing session the person can follow with their eyes. Invoke it when someone asks for a breathing break, a breathing exercise, guided breathing, or a moment to calm down, relax, or reset: the visual session is the breathing break. In a client that supports MCP Apps (Claude on the web and in the desktop app, for example), the session appears in the chat itself. The result also carries a link to the same session as a web page, for any client that cannot draw it there. Either way the session opens at rest and starts when the person presses Begin, so nothing moves without their say-so. With no inputs, it plays the default Circle 4-8 Breathing session, which has no breath holds.

Input parameters:

- `cycles` (integer): Exact number of breath cycles. Takes precedence over minutes.
- `minutes` (number): Approximate session length; rounded to whole breath cycles.
- `pattern` (string): Pattern id from list_patterns. Defaults to in-out-extended-exhale. list_patterns marks each hold-free pattern with "holdFree": true.
- `shape` (string): Shape to draw. Each pattern lists the shapes it can use; defaults to the pattern's first. box: A square whose outline draws itself once per breath cycle. triangle: A triangle whose outline draws itse…

### `start_session` (~428 tokens)

Start a matched session

Matches a VirWave session the way the app's entry flow does: how clearly a feeling is coming through, what they'd like instead, and how long they have. Invoke it when someone says how they are feeling, or what they would like to feel instead, and wants a breathing session that fits. The session moves through stages (arrive, the matched core, close), each with its own shape, at one steady breath pace, and ends at the chosen length. In a client that supports MCP Apps (Claude on the web and in the desktop app, for example), the session appears in the chat itself. The result also carries a link to the same session as a web page, for any client that cannot draw it there. Either way the session waits for Begin, and the result says why it was picked and which stages it has. Every matched session is hold-free: breathe in, a longer breath out.

Input parameters:

- `feeling` (string, required): How the feeling is coming through: how clearly, not which feeling it is. The options describe how clear the signal is, and none of them names an emotion. flat (Flat / no signal: Numb, far off, nothin…
- `goal` (string, required): What they'd like instead. grounded (Grounded: Back in the body, contact restored.) calm (Calm: Slower, softer, less pressure.) clear (Clear: One thing at a time, in focus.) unstuck (Unstuck: The loop…
- `minutes` (number, required): How long they have: 2, 5, 10, or 15 minutes. Longer sessions move through more stages, not just more time.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/virwave-virwave-breathe/functions-v1-breathe#diagnostics

## Score history

- 2026-09-26: 68
- 2026-09-25: 67
- 2026-09-24: 67

## Common questions

### What is the VirWave Breathe MCP server?

VirWave Breathe is an MCP server listed in the public MCP registry as io.github.virwave/virwave-breathe. Calm, animated breathing sessions paced to your breath. Runs locally and collects nothing. This page covers its hosted endpoint (https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe).

### Is the VirWave Breathe MCP server safe to use?

VirWave Breathe scores 68 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the VirWave Breathe MCP server expose?

VirWave Breathe exposes 3 tools: list_patterns, breathe, start_session. Their descriptions and schemas cost roughly 826 tokens of context every time the server is loaded.

### Does the VirWave Breathe MCP server require authentication?

No. We connected to VirWave Breathe without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the VirWave Breathe MCP server still maintained?

VirWave Breathe is still listed as active in the MCP registry. We last reached this channel on 26 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://xswebtvkueusdaeboizp.supabase.co/functions/v1/breathe
- Website: https://virwave.com/
- Changelog RSS feed: https://verifymcp.io/servers/virwave-virwave-breathe/functions-v1-breathe.xml
- Changelog JSON feed: https://verifymcp.io/servers/virwave-virwave-breathe/functions-v1-breathe.json
- HTML version of this page: https://verifymcp.io/servers/virwave-virwave-breathe/functions-v1-breathe