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Nefesh MCP Server

@nefesh-ai

Repository

Basic information

Category

Other

Transports

stdio

Author

nefesh-ai

Submitted by

tomstuhl

About Nefesh MCP Server

Real-time human state awareness for AI agents. Fuses cardiovascular, vocal, visual, and textual signals into a unified stress score (0-100). MCP + A2A native. 7 tools, 4 A2A skills. Closed-loop adaptation feedback. Free tier available.

#health#biometrics#stress#wellness#mcp#streamable-http

Nefesh MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "nefesh": {
      "url": "https://mcp.nefesh.ai/mcp",
      "headers": {
        "X-Nefesh-Key": "<YOUR_API_KEY>"
      }
    }
  }
}

Nefesh MCP Server tools

4

Get current unified human state for a session. Returns stress level, active signals, confidence, and a default LLM behavior recommendation. Call before generating important responses. Not a medical device.

Send human signals from any sensor, get unified state back. session_id + timestamp + at least one signal required. Heart rate, glucose, EEG, voice tone, facial expression — send what you have. Not a medical device.

Get state history over time for a session. Returns timestamped state snapshots from the last N minutes. Useful for tracking stress trends. Not a medical device.

GDPR-compliant deletion of all data for a subject. Cascading delete: removes all sessions and stored signals for the given subject_id. Irreversible. Not a medical device.

Overview

What is Nefesh?

Nefesh is an MCP server that gives AI agents real-time awareness of human physiological state. It accepts sensor data (heart rate, voice, facial expression, text sentiment) and returns a unified state with a machine-readable action for the agent, including adaptation_effectiveness on subsequent calls for closed-loop feedback.

How to use Nefesh?

Add the server URL to your MCP client config (e.g., ~/.cursor/mcp.json). Use Option A: connect without an API key and ask your agent to call request_api_key — after clicking a verification email, the agent retrieves the key automatically. Option B: sign up at nefesh.ai/signup for a free key (1,000 calls/month) and include it in the config headers. All agents connect via Streamable HTTP — no local installation required.

Key features of Nefesh

  • Seven tools including ingest, get_human_state, and delete_subject
  • Self‑provisioning: agent fetches API key autonomously after email verification
  • Returns adaptation_effectiveness on second+ call for closed‑loop feedback
  • Free tier: 1,000 calls/month with no credit card
  • No video/audio uploads; edge processing runs client‑side
  • GDPR/BIPA compliant with delete_subject for cascading deletion

Use cases of Nefesh

  • AI coaching agents that adapt tone and timing based on user stress state
  • Productivity assistants that pause or reframe tasks when detecting cognitive load
  • Companion agents that respond to emotional signals with appropriate empathy
  • Autonomous interview bots that modify pacing based on candidate facial expression

Frequently asked questions

1

How does Nefesh handle data privacy?

No video or audio is uploaded — edge processing runs client‑side. No PII is stored. The `delete_subject` tool enables cascading deletion for GDPR/BIPA compliance. Nefesh is not a medical device.

2

What are the rate limits and pricing?

Free tier: 1,000 calls/month, all signal types, 10 requests per minute. Paid Solo plan: $25/month for 50,000 calls. Enterprise plan offers custom SLA and pricing.

3

What transport does Nefesh use?

Streamable HTTP — no local installation needed. All MCP clients connect via a URL.

4

How does self‑provisioning work?

The agent calls `request_api_key(email)` without an API key. After you click a verification link, the agent polls `check_api_key_status` every 10 seconds and receives the key automatically.

5

What data can I delete?

You can delete all stored data for a subject using the `delete_subject` tool — this triggers full GDPR/BIPA‑compliant deletion.

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