Crixin Voice

Name: Crixin Voice
Author: THELAZIZAGROUP

by THELAZIZAGROUPversion 0.7.2i★ –iComputer or cloud

Registry namecom.crixin/voice

Install

Overview

Description from the maker (original English)

Give your AI a real phone: place calls, send SMS, fetch recordings and transcripts. Local or hosted.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Chat & email
You need to fill in: CRIXIN_API_KEY, TWILIO_AUTH_TOKEN, DEEPGRAM_API_KEY, Authorization

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: CRIXIN_API_KEY, TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN, TWILIO_PHONE_NUMBER, DEEPGRAM_API_KEY, Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet
npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "voice": {
      "command": "npx",
      "args": [
        "-y",
        "crixin",
        "voice",
        "mcp"
      ],
      "env": {
        "CRIXIN_API_KEY": "your-value",
        "TWILIO_ACCOUNT_SID": "your-value",
        "TWILIO_AUTH_TOKEN": "your-value",
        "TWILIO_PHONE_NUMBER": "your-value",
        "DEEPGRAM_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http voice https://crixin-platform.vercel.app/api/mcp --header 'Authorization: your-value'

Or run it on your computer

claude mcp add voice --env CRIXIN_API_KEY=your-value --env TWILIO_ACCOUNT_SID=your-value --env TWILIO_AUTH_TOKEN=your-value --env TWILIO_PHONE_NUMBER=your-value --env DEEPGRAM_API_KEY=your-value -- npx -y crixin voice mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "voice": {
      "url": "https://crixin-platform.vercel.app/api/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "voice": {
      "command": "npx",
      "args": [
        "-y",
        "crixin",
        "voice",
        "mcp"
      ],
      "env": {
        "CRIXIN_API_KEY": "your-value",
        "TWILIO_ACCOUNT_SID": "your-value",
        "TWILIO_AUTH_TOKEN": "your-value",
        "TWILIO_PHONE_NUMBER": "your-value",
        "DEEPGRAM_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "voice": {
      "type": "http",
      "url": "https://crixin-platform.vercel.app/api/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "voice": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "crixin",
        "voice",
        "mcp"
      ],
      "env": {
        "CRIXIN_API_KEY": "your-value",
        "TWILIO_ACCOUNT_SID": "your-value",
        "TWILIO_AUTH_TOKEN": "your-value",
        "TWILIO_PHONE_NUMBER": "your-value",
        "DEEPGRAM_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

CRIXIN_API_KEY secret env
Crixin platform key (crx_live_…). Set this for hosted mode — no Twilio account needed.
TWILIO_ACCOUNT_SID env
Bring-your-own-Twilio mode: account SID.
TWILIO_AUTH_TOKEN secret env
Bring-your-own-Twilio mode: auth token.
TWILIO_PHONE_NUMBER env
Bring-your-own-Twilio mode: caller number in E.164.
DEEPGRAM_API_KEY secret env
Optional in BYO mode — enables transcribe_call locally.
Authorization secret required HTTP header
Bearer crx_live_… key from the Crixin dashboard.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain crixin.com (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Chat & emaili

More stars than 0% of the other 1768 servers in this category
Published to the registry more recently than 29% of the other 1768 servers in this category
Basic checks equal to or better than 100% of the other 1768 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Crixin Voice safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: CRIXIN_API_KEY, TWILIO_AUTH_TOKEN, DEEPGRAM_API_KEY, Authorization

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.7.2) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

crixin

The MCP toolkit for AI agents. Two MCPs in one npm package, sharing one local SQLite, installing into the same MCP-aware hosts you already use.

Voice MCP — give your AI a phone line. Real outbound calls + SMS + transcription through your own Twilio.
Coder MCP — give your AI a memory. Reads back every Claude Code, Codex CLI, and Cursor session you've ever had.

Local-first. Bring your own Twilio. Bring your own LLM. No SaaS in the middle.

Install

npm i -g crixin

crixin install # writes BOTH MCPs (voice + coder) into Claude Desktop, Claude Code, Cursor, Codex CLI

Escape hatches if you want one half only:

crixin voice install          # only the phone half

crixin coder install # only the memory half

For Voice MCP, set Twilio creds in the env your AI host launches from:

export TWILIO_ACCOUNT_SID=ACxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

export TWILIO_AUTH_TOKEN=your_auth_token export TWILIO_PHONE_NUMBER=+15555550100 export DEEPGRAM_API_KEY=... # optional — needed for Voice Wrapped + Caller Archetype

Platform mode (no Twilio account needed)

Don't want to bring your own Twilio? Grab an API key from the Crixin dashboard and set it instead — all six voice tools route through Crixin's hosted platform:

CRIXIN_API_KEY=crx_live_... npx -y crixin voice mcp

No TWILIO_* vars, no DEEPGRAM_API_KEY (transcription runs server-side). CRIXIN_API_BASE overrides the API origin if you need to. The geo-gate still runs locally — strict-consent destinations (US/UK/EU/AU) require consented: true either way.

Verify before you dial:

crixin voice doctor           # BYO: one GET against Twilio. Platform mode: checks your key + minute quota. No charges.

For Coder MCP, ingest your AI coding history:

crixin coder ingest           # pulls Claude Code, Codex CLI, Cursor sessions → ~/.crixin/crixin.db

Remote MCP (nothing to install)

The same six voice tools are served over Streamable HTTP by the hosted platform. Point any MCP host at the endpoint with your crx_live_… key:

claude mcp add --transport http crixin-voice https://crixin-platform.vercel.app/api/mcp \

--header "Authorization: Bearer crx_live_..."

Cursor / VS Code: add an HTTP MCP server with the same URL and Authorization header. ChatGPT: Settings → Connectors → Developer mode → add the URL. The endpoint is stateless (POST only); tool names, arguments and results are identical to the local server.

What each MCP exposes

Voice MCP — `crixin-voice`

Tool	What it does
`make_call`	Outbound voice call. `to` + `prompt` (assistant speaks it; recipient response recorded), or raw TwiML.
`get_call`	Status / duration / price / timestamps for one Call SID.
`list_calls`	Recent calls — filter by `to` / `from` / `status` / `start_time_after`.
`list_recordings`	Recordings + auth-protected media URLs for a Call SID.
`transcribe_call`	Run a recording through Deepgram. 30+ languages including Arabic.
`send_sms`	SMS / MMS through Twilio. Messaging Service support.

Coder MCP — `crixin-coder`

Tool	What it does
`search_sessions`	Full-text search across every ingested Claude Code / Codex / Cursor session.
`list_recent_sessions`	Newest sessions first, with project + token counts.
`get_session`	Pull a full session transcript by ID.
`stats`	Aggregate counts across the local SQLite store.

Everyday commands

# Voice MCP

crixin voice doctor # live-probe Twilio (no charges) crixin voice call [prompt] # one-off call from the CLI crixin voice sms # one-off SMS crixin voice ingest # pull recent Twilio calls + Deepgram transcripts → local SQLite crixin voice wrapped --year 2026 # annual recap (HTML) — heatmaps, archetype, top destinations crixin voice archetype # caller archetype reveal (Quick Pitcher / Patient Listener / …) crixin voice mcp # run as a stdio MCP server (used by AI hosts via npx)

Coder MCP

crixin coder ingest # ingest AI coding sessions → ~/.crixin/crixin.db crixin coder search # CLI search across sessions crixin coder dashboard # local Hono dashboard on 127.0.0.1 crixin coder wrapped --year 2026 # annual recap (HTML) — top projects, monthly bars, archetype crixin coder archetype # 11 archetypes — 5 for you, 6 for your AI crixin coder mcp # run as a stdio MCP server (used by AI hosts via npx)

Sync (Pro) — one account, every machine, same session list

crixin sync status # device + link state + queue counts (works on Free) crixin sync link # opens browser to approve this device crixin sync push # send metadata to the server (manual, foreground) crixin sync pull # fetch peer metadata into the local inbox crixin sync inbox # latest pulled records from your other machines

Metadata only. Sync v1 shares the session index across your machines — never message bodies, transcripts, credentials, phone numbers, or free-text tags. Your code never leaves your disk.

Per-host install (manual)

# Claude Code

claude mcp add crixin-voice -- npx -y crixin voice mcp claude mcp add crixin-coder -- npx -y crixin coder mcp

Cursor — append to ~/.cursor/mcp.json

{ "mcpServers": { "crixin-voice": { "command": "npx", "args": ["-y","crixin","voice","mcp"] }, "crixin-coder": { "command": "npx", "args": ["-y","crixin","coder","mcp"] } } }

Codex CLI — append to ~/.codex/config.toml

[mcp_servers.crixin-voice] command = "npx" args = ["-y","crixin","voice","mcp"]

[mcp_servers.crixin-coder] command = "npx" args = ["-y","crixin","coder","mcp"]

Or just run crixin install and let it wire everything for you.

Wrapped (the year-end receipt)

Both halves emit a self-contained HTML report.

crixin voice wrapped               # → ./crixin-voice-wrapped-2026.html

crixin coder wrapped # → ./crixin-coder-wrapped-2026.html

Hour-of-day heatmaps, monthly bars, archetype reveal (Patient Listener / Hard Closer / Ducker / Cowboy / Architect / …), top destinations or top projects, top languages or top models. PII-stripped. Shareable as a screenshot. No upload.

Stack

STT: Deepgram Nova-2 (optional — DEEPGRAM_API_KEY).
TTS: Twilio Polly + Google neural voices via TwiML . (Polly.Joanna-Neural for en-US, Polly.Hala-Neural for ar-EG, Polly.Lucia-Neural for es-ES, etc.)
LLM: none in the open-source call path — your AI host decides what to say. Pro tier can plug in hosted Wrapped + memory sync.
Storage: local SQLite at ~/.crixin/crixin.db. Tables: voice_calls, voice_recordings, sessions, messages.

Pricing

Tier	Price	What you get
Open Source	Free forever	Both MCPs, all tools, all Wrapped, all archetypes. MIT-licensed. Bring your own Twilio.
Crixin Unlimited	$9.99/mo	Hosted calling with no Twilio account: unlimited calls, one monthly fee. Premium voice for the first 60 minutes each month, then standard, then basic — the call always gets made. One call at a time per account. Platform mode (`CRIXIN_API_KEY`) and the remote MCP run on this plan.

Existing Coder Pro ($5/mo: hosted Wrapped + crixin sync) keeps working and is being folded into Unlimited.

See full pricing.

Privacy posture

Zero servers between you and Twilio. Calls hit api.twilio.com directly with your auth header.
Coder MCP reads JSONLs your AI host already wrote to your disk. Nothing leaves your machine.

Privacy Policy

Full policy: https://crixin.com/legal/privacy (effective June 17, 2026). In short:

Local mode (BYO Twilio): this package collects nothing. Calls go straight to Twilio with your credentials; call history and transcripts live in ~/.crixin/crixin.db on your machine. Your AI host sees tool results the same way it sees any other tool.
Hosted mode (`CRIXIN_API_KEY` or the remote MCP): the Crixin platform stores call metadata (numbers, timestamps, duration, status), recordings and transcripts you request, and usage counters for billing. Calls are carried by Twilio; transcription runs on Deepgram; hosted voice calls use OpenAI, Deepgram and ElevenLabs models. We do not sell data.
Retention: account data while the account is active, deleted within 30 days of account deletion; recordings and transcripts deleted with the account; payment records as required by law.
Contact: privacy@crixin.com (privacy requests) · help@crixin.com (support).
Transcripts and call recordings stay in your Twilio account and your local SQLite.
No telemetry. No upload. No analytics pixels.

Geo-gate (Voice MCP)

Outbound calls to strict-consent jurisdictions (US, Canada, UK, IE, FR, ES, IT, NL, AU, NZ) require an explicit --consented flag or consented: true in the MCP tool args. Permissive jurisdictions (Egypt, UAE, KSA, Jordan, Kuwait, Qatar, Bahrain, Oman, Lebanon, Nigeria, ZA) dial without the flag. Germany is blocked outright. Override with CRIXIN_VOICE_ALLOWED_CC.

Docs

Install · Voice MCP · Coder MCP · Wrapped · Archetype · Pricing · FAQ

License

MIT. Built by @Mrdopplereffekt.

Crixin Voice

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Chat & emaili

Common questions

Alternatives

Vexa

emailmd

MCP WhatsApp Cloud

README from the maker

crixin

Install

Platform mode (no Twilio account needed)

Remote MCP (nothing to install)

What each MCP exposes

Voice MCP — crixin-voice

Coder MCP — crixin-coder

Everyday commands

Coder MCP

Sync (Pro) — one account, every machine, same session list

Per-host install (manual)

Cursor — append to ~/.cursor/mcp.json

Codex CLI — append to ~/.codex/config.toml

Wrapped (the year-end receipt)

Stack

Pricing

Privacy posture

Privacy Policy

Geo-gate (Voice MCP)

Docs

License

Voice MCP — `crixin-voice`

Coder MCP — `crixin-coder`