install · 5 steps · 30 seconds

Wire both MCPs into your AI host.

One npm install. One umbrella command. Both MCPs (voice + coder) land in every supported AI host on your machine. Set your Twilio creds. Done. Your AI agent gets a phone line and a memory before your coffee's cold.

npm i -g crixin && crixin install Tool reference
STEP 01

Install from npm.

One global package. Includes the CLI, both MCP servers (crixin-voice + crixin-coder), all the Wrapped + Archetype engines, and a local SQLite at ~/.crixin/crixin.db.

npm i -g crixin
crixin --version  # 0.5.0
STEP 02

Wire both MCPs in one shot.

crixin install writes BOTH MCP entries (crixin-voice and crixin-coder) into every supported host config: Claude Desktop, Claude Code, Cursor, Codex CLI. Idempotent. Atomic writes — never corrupts existing config.

crixin install
# ✓ claude code     ~/.claude/settings.json       (+ crixin-voice + crixin-coder)
# ✓ cursor          ~/.cursor/mcp.json            (+ crixin-voice + crixin-coder)
# ✓ codex cli       ~/.codex/config.toml          (+ crixin-voice + crixin-coder)
# ✓ claude desktop  ~/Library/.../claude_desktop_config.json

Or do it manually per-host:

Claude Code

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

Cursor

// ~/.cursor/mcp.json
{
  "mcpServers": {
    "crixin-voice": {
      "command": "npx",
      "args": ["-y","crixin","voice","mcp"]
    },
    "crixin-coder": {
      "command": "npx",
      "args": ["-y","crixin","coder","mcp"]
    }
  }
}

Codex CLI

# ~/.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"]

Claude Desktop

// ~/Library/.../claude_desktop_config.json
{
  "mcpServers": {
    "crixin-voice": { "command": "npx",
      "args": ["-y","crixin","voice","mcp"] },
    "crixin-coder": { "command": "npx",
      "args": ["-y","crixin","coder","mcp"] }
  }
}

Restart your AI host once after install. The new tools show up in the Tools menu (Cursor / Claude Desktop) or as available MCPs (Claude Code / Codex).

STEP 03

Set Twilio creds (Voice MCP only).

Voice MCP reads creds from the env your AI host launches from. Use whatever secrets manager you like — Doppler, 1Password, Vault, or a plain .env. Coder MCP needs no env — it reads files your AI host already wrote to disk.

export TWILIO_ACCOUNT_SID=ACxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
export TWILIO_AUTH_TOKEN=your_auth_token
export TWILIO_PHONE_NUMBER=+15555550100

# Optional — needed for transcribe_call + Voice Wrapped + Caller Archetype
export DEEPGRAM_API_KEY=...

crixin voice doctor

Doctor probes the live Twilio API once (zero charges) and surfaces stale-token errors before you try to dial a customer. If your token was rotated and your secrets manager hasn't caught up, this catches it instantly.

STEP 04

Ingest your AI coding history (Coder MCP).

Reads JSONLs your AI host already wrote to disk — ~/.claude/projects/, ~/.codex/sessions/, Cursor app data. Drops everything into local SQLite. Takes ~15 seconds even on heavy users.

crixin coder ingest
# scanning ~/.claude/projects/        (387 sessions)
# scanning ~/.codex/sessions/         ( 42 sessions)
# scanning ~/Library/.../cursor-state ( 18 sessions)
# ingested 447 sessions, 312,841 messages → ~/.crixin/crixin.db
STEP 05

Ask your AI host. This is the aha.

The whole point. Open your AI host. Type one of these.

# Voice MCP — phone
use crixin-voice to call +14155550142 and confirm tomorrow's order.

# Coder MCP — memory
use crixin-coder to find when we last discussed the auth refactor.

# Both at once
use crixin-coder to find what we agreed about Tony's Pizza last week,
then use crixin-voice to call them and confirm.

No campaign UI, no agent roster, no dashboard. Two MCP tool surfaces, one chat window, one phone ringing.

BONUS

See the year-end receipts.

crixin voice wrapped --year 2026     # heatmap, archetype, top destinations
crixin coder wrapped --year 2026     # heatmap, archetype, top projects

Each writes a self-contained HTML file you can open, screenshot, or share. Generated locally. PII auto-stripped.