Vayu

Vayu Breathing

Guided breathing inside ChatGPT and Claude

Tell your assistant how you feel, or ask for a technique, and a breathing timer appears in the conversation. Press Start, and the circle grows as you breathe in and settles as you breathe out, with each phase named and timed. No account and nothing to install.

Add it

Claude

  1. In Claude on the web or the desktop app, open Settings, then Connectors.
  2. Choose Add custom connector, name it Vayu Breathing, and paste https://vayu-prana.com/api/mcp/claude. Leave the authentication fields empty: there is no sign-in.
  3. In a new chat, make sure Vayu Breathing is switched on in the tools menu, then ask for a practice.

ChatGPT

Open Vayu Breathing in the ChatGPT plugin directory and add it.

Things to ask

  • “Help me sleep better”
  • “I'm anxious before a meeting. Help me calm down.”
  • “Box breathing for 1 minute”
  • “Give me a stress relief pause”
  • “What is Bhramari and how do I do it?”
  • “Make me a 7-day breathing plan for stress”

What each tool does

find_breathing_practiceshows the timer
Picks a practice for how you feel: trouble sleeping, anxiety, a panic moment, stress, feeling overwhelmed, racing thoughts, brain fog, focus, nerves before a big moment or low energy. It says why, and offers alternatives you can switch to in the timer.
get_sleep_routineshows the timer
An evening wind-down routine built around Bedtime calm, with clock times if you give a usual bedtime, what to do if you wake in the night, and when to talk to a doctor.
start_guided_pauseshows the timer
A short guided pause for the morning, midday, stress relief or bedtime: three settling prompts, then 3, 6, 9 or 12 slow breaths, then one release breath.
start_breathing_sessionshows the timer
A named technique for 1 to 10 minutes: box breathing, 4-7-8, cyclic sighing, extended exhale, a 4-8 slow exhale, humming bee breath (Bhramari), alternate nostril breathing or a steady 4-2-4-2 rhythm.
explain_breathing_techniquetext only
How to do one of 16 techniques, including pranayama such as Ujjayi, Kapalabhati and Bhastrika, with the best time of day and cautions. Fast, forceful techniques are explained but never paced.
build_breathing_plantext only
A 7-day practice plan for sleep, stress, anxiety, focus or energy, one short practice a day.

Every tool is read-only. Guided practices open with short settling prompts and end with one breath that is not counted, and some results add alternative practices you can switch to before you start.

What Vayu receives

Only the choices your assistant passes to the tools: a practice, need, sleep concern, technique or goal picked from a fixed list, a session length and, if you mention one, your usual bedtime. Vayu never receives your name, email address, account details or the content of your conversation.

The server records the time of each request, the tool called and the fixed-list choice (never your bedtime). The timer runs in your browser, sets no cookies and loads nothing from outside. Details in the privacy policy.

For developers

  • Claude: https://vayu-prana.com/api/mcp/claude
  • ChatGPT: https://vayu-prana.com/api/mcp/breathe
  • Remote MCP over Streamable HTTP, stateless JSON-RPC, no authentication.
  • The timer is an MCP Apps UI resource that makes no network requests.

Help

Questions or problems: vayu-prana.com/contact.

Before you start

Stop if you feel dizzy or lightheaded, and breathe normally.

If you are pregnant, have uncontrolled blood pressure, a heart condition, or recent surgery, stick to the slow patterns and skip the forced ones. Full list at vayu-prana.com/safety.

This is a relaxation practice, not medical care. For chest pain, fainting or breathing trouble that does not ease, call emergency services.