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Better Call Claude MCP server

by sns45·io.github.sns45/better-call-claude·v3.1.3·1 stars
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Voice Calls, SMS, and WhatsApp for Claude Code with cross-channel context sharing.

B75/100grade B
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Safety scan
B75/100

full report

Adoption
Growing

1 stars34 downloads/wk

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Better Call Claude tools (10, 2 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • continue_call

    Continue an active phone call by speaking a message and waiting for the user's response.

  • end_call

    End an active phone call, optionally with a closing message.

  • get_conversation_history

    Get the full message history for a conversation, including all messages exchanged.

  • initiate_call

    Start a phone call to the user to communicate status, ask questions, or request decisions. The call will connect and Claude can speak first.

  • receive_inbound_call

    Check for and receive an incoming phone call from the user. Returns the user's spoken message if a call is waiting.

  • receive_inbound_message

    Check for incoming SMS or WhatsApp messages from the user. Returns the message content if one is waiting.

  • reply_to_conversation

    Reply to an existing conversation (voice call, SMS, or WhatsApp). Continues the conversation thread.

  • send_smswrite action

    Send an SMS message to the user. Can optionally wait for a reply.

  • send_whatsappwrite action

    Send a WhatsApp message to the user. Can optionally wait for a reply.

  • speak_to_user

    Speak to the user on an active call without waiting for a response. Good for acknowledgments or updates.

Public scan report

scanner v0.1.9 · 2026-09-25 · same rubric, same numbers if you re-run it

1 medium
  • Code scan2 source files scanned20/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitystatic API keys via environment variables6/15
  • Maintenancelast push 29 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Findings (1)

  • mediumeval / new Function usedexec.eval
    dist/index.js: …eCode, sch); const makeValidate = new Function(`${names_1.default.self}`, `${names_1.de…
Overall 75/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Better Call Claude compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
75/100
higher than 45% of 48,255 servers
Tools
10
the typical server has 7
Tools that change things
20%
typical: 0%. Fewer write tools means less an agent can break
GitHub stars
1
more than 65% of 28,688 servers
Downloads a week
34
more than 23% of 12,191 servers with a package

What its tools let an agent do: 7 read · 3 send or post

Install Better Call Claude in Claude Code, Cursor or VS Code

Runs npx -y better-call-claude on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add better-call-claude -- npx -y better-call-claude
Add to Cursor

What the publisher says

From the Better Call Claude repository's README, as published. We do not edit it. Read it on GitHub

Better Call Claude

Bi-directional communication for Claude Code via Voice Calls, SMS, and WhatsApp. Call Claude from your phone to start tasks, and receive callbacks when Claude needs input or wants to share status.

📞 "Hey Claude, refactor the auth module and call me when you're done or need a decision."

[20 minutes later, phone rings]

🤖 "I've finished the refactor but found a security issue. Should I fix it now or create a ticket?"

💬 Or via SMS/WhatsApp:

You: "Claude, how's the deployment going?"

Claude: "Deployment complete. 3 services updated, all health checks passing."

Features

  • 📱 Inbound calls - Call Claude Code from your phone to start tasks
  • 📲 Outbound calls - Claude calls you when done, stuck, or needs decisions
  • 💬 SMS messaging - Send and receive text messages with Claude
  • 📱 WhatsApp - Full WhatsApp Business integration
  • 🔄 Cross-channel context - Start on voice, continue on WhatsApp seamlessly
  • 🔗 Persistent sessions - Claude stays alive listening for WhatsApp messages
  • 🔒 Secure transport - Tailscale Funnel with guided auto-setup
  • 🗣️ Natural conversations - Multi-turn interactions across all channels
  • 🔧 Tool composable - Claude can use other tools while communicating
  • ⚡ Auto-webhook updates - Twilio webhooks auto-update when URL changes
  • 🆓 Free WhatsApp via Baileys - Personal WhatsApp with zero API costs, no business verification
  • ⌚ Works anywhere - Phone, smartwatch, or any device

### ⚠️ Testing Status

| Channel | Provider | Status |

|---------|----------|--------|

| Voice | Twilio | ✅ Tested & Working |

| WhatsApp | Twilio Sandbox | ✅ Tested & Working |

| SMS | Twilio | ⏳ Pending A2P 10DLC verification |

| Voice | Telnyx | 🔬 Not yet tested |

| SMS | Telnyx | 🔬 Not yet tested |

| WhatsApp | Telnyx | 🔬 Not yet tested |

| WhatsApp | Baileys (free) | 🔬 New - testing welcome |

Contributions welcome for testing other provider/channel combinations!

Quick Start

1. Choose Your Setup

Just want WhatsApp? Skip to Option C: Baileys — no accounts, no API keys, completely free.

2. Set Up Phone Provider

Option A: Telnyx (Recommended - 50% cheaper)

  1. Create account at portal.telnyx.com and verify identity
  2. Buy a phone number (~$1/month)
  3. Create a Voice API application:
  • Set webhook URL to your tunnel URL + /webhook/telnyx/inbound
  • Set API version to v2
  1. Enable SMS on your phone number:
  • Go to Messaging and create a Messaging Profile
  • Assign your phone number to the profile
  • Set SMS webhook URL to your tunnel URL + /webhook/telnyx/sms
  1. Enable WhatsApp (optional):
  • Go to WhatsApp in portal
  • Complete WhatsApp Business verification
  • Set webhook URL to your tunnel URL + /webhook/telnyx/whatsapp
  1. Verify your phone number for outbound calls
  2. Get your Connection ID (or Messaging Profile ID) and API Key

Option B: Twilio

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Better Call Claude: common questions

Is Better Call Claude MCP server safe?
Mostly: it is graded B (75/100). Read the Better Call Claude safety report
How do I install Better Call Claude?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Better Call Claude need an API key?
Yes. The registry entry asks for BETTERCALLCLAUDE_PHONE_ACCOUNT_SID, BETTERCALLCLAUDE_PHONE_AUTH_TOKEN, BETTERCALLCLAUDE_OPENAI_API_KEY.
Is Better Call Claude maintained?
The last commit was 68 days ago (2026-08-28). The latest release is v3.1.3.
How does Better Call Claude compare with other MCP servers?
safety score 75/100 (higher than 45% of 48,255 servers); tools 10 (the typical server has 7); tools that change things 20% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.