VirWave Breathe
NPM · VIRWAVE-BREATHE · 2 COMPONENTS · SCANNED SEP 26
Calm, animated breathing sessions paced to your breath. Runs locally and collects nothing.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security100
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- No production dependencies, so there is no dependency health to assess. View diagnostics → Pass
Provenance & Transparency19
- Repository check failed: the declared repository URL returned HTTP 404. See how to fix → View diagnostics → Fail
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 2 days ago).Pass
- Security-disclosure policy not yet verified: we couldn't inspect the source repository.Unverified
Schema Quality & AI Usability75
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 2259 tokens (~376/item across 6 items; 3 tools + 3 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
- Supports UI / widget rendering.Pass
Unverified: 1 category
A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.
How do I install the VirWave Breathe MCP server?
VirWave Breathe runs locally as an npm package, launched with npx -y virwave-breathe. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · virwave-breathe
claude mcp add virwave-virwave-breathe -- npx -y virwave-breathe
{
"mcpServers": {
"virwave-virwave-breathe": {
"command": "npx",
"args": [
"-y",
"virwave-breathe"
]
}
}
} {
"servers": {
"virwave-virwave-breathe": {
"command": "npx",
"args": [
"-y",
"virwave-breathe"
]
}
}
} codex mcp add virwave-virwave-breathe -- npx -y virwave-breathe
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"virwave-virwave-breathe": {
"type": "local",
"command": [
"npx",
"-y",
"virwave-breathe"
],
"enabled": true
}
}
} openclaw mcp add virwave-virwave-breathe --command npx --arg -y --arg virwave-breathe
mcp_servers:
virwave-virwave-breathe:
command: "npx"
args: ["-y", "virwave-breathe"] {
"McpServers": {
"virwave-virwave-breathe": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"virwave-breathe"
]
}
}
} assistant mcp add virwave-virwave-breathe -t stdio -c npx -a -y virwave-breathe
{
"mcpServers": {
"virwave-virwave-breathe": {
"command": "npx",
"args": [
"-y",
"virwave-breathe"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 26 Sept 26 0
- Security disclosure: fail → unverified ▼ functional
- 25 Sept 26 +9
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 24 Sept 26 56
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 26 Sept 2026 · Analysed npm/virwave-breathe@1.2.0
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 0 packages
| Packages resolved | 0 |
|---|---|
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
breathe Start a breathing session ~459
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 Desktop, for example), the session appears in the chat itself, and no browser opens and no file is saved unless out_dir is given or the person has turned on saving a copy. In any other client, it is saved as a self-contained HTML page on this computer and, unless out_dir is given, opens in the person's default browser (they can turn that off in settings). The result says which happened. 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.
| Name | Type | Req | Description |
|---|---|---|---|
| cycles | integer | – | Exact number of breath cycles. Takes precedence over minutes. |
| minutes | number | – | Approximate session length; rounded to whole breath cycles. |
| out_dir | string | – | Directory to write the page into, for a client that shows the page itself (for example, by publishing it as an Artifact). When set, the page is not opened in the browser. When left out, the page is s… |
| 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… |
No output schema declared.
No examples provided.
list_patterns List breathing patterns ~57
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.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
start_session Start a matched session ~546
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 Desktop, for example), the session appears in the chat itself, and no browser opens and no file is saved unless out_dir is given or the person has turned on saving a copy. In any other client, it is saved as a self-contained HTML page on this computer and, unless out_dir is given, opens in the person's default browser (they can turn that off in settings). The result says which happened. 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.
| Name | Type | Req | Description |
|---|---|---|---|
| feeling | string | yes | 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 | yes | 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 | yes | How long they have: 2, 5, 10, or 15 minutes. Longer sessions move through more stages, not just more time. |
| out_dir | string | – | Directory to write the page into, for a client that shows the page itself (for example, by publishing it as an Artifact). When set, the page is not opened in the browser. When left out, the page is s… |
No output schema declared.
No examples provided.
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 npm package (virwave-breathe).
Is the VirWave Breathe MCP server safe to use?
VirWave Breathe scores 65 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 26 September 2026. It declares no install or post-install scripts. 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 1,062 tokens of context every time the server is loaded.
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.
What licence is the VirWave Breathe MCP server under?
VirWave Breathe declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.