Pinnacle MCP Server

Connect AI assistants to the Pinnacle messaging API using the Model Context Protocol. Send SMS, MMS, and RCS messages, manage contacts and conversations, and more — all through natural language.

Supported clients: Claude Desktop, Claude Code, Cursor, Windsurf, and any MCP-compatible AI tool.

Quick Start

Remote (recommended)

No install needed. Add to your MCP client config:

Cursor (.cursor/mcp.json):

{
  "mcpServers": {
    "pinnacle": {
      "url": "https://mcp.pinnacle.sh/mcp",
      "headers": {
        "PINNACLE-API-KEY": "your-api-key"
      }
    }
  }
}

Claude Code:

claude mcp add pinnacle --transport http https://mcp.pinnacle.sh/mcp \
  -H "PINNACLE-API-KEY: your-api-key"

Local (npx)

PINNACLE_API_KEY=your-api-key npx @pinnacle-rcs/mcp

Or add to your MCP client config:

{
  "mcpServers": {
    "pinnacle": {
      "command": "npx",
      "args": ["@pinnacle-rcs/mcp"],
      "env": {
        "PINNACLE_API_KEY": "your-api-key"
      }
    }
  }
}

Available Tools

Messaging

| Tool | Description | |------|-------------| | send_sms | Send an SMS message | | send_mms | Send an MMS with text and/or media | | send_rcs | Send a rich RCS message with cards, buttons, and quick replies | | get_message | Get message details by ID | | send_typing_indicator | Show typing indicator from an RCS agent | | cancel_scheduled_message | Cancel a scheduled message before it sends | | react_to_message | Add or remove an emoji reaction on a message | | validate_sms | Validate SMS and get segment/cost estimate | | validate_mms | Validate MMS and get segment/cost estimate | | validate_rcs | Validate RCS and get cost estimate |

Conversations

| Tool | Description | |------|-------------| | list_conversations | List conversations with filtering | | get_conversation | Get a conversation by ID or phone numbers | | list_conversation_messages | Get messages in a conversation | | update_conversation | Update conversation notes |

Contacts

| Tool | Description | |------|-------------| | get_contact | Look up a contact | | create_contact | Create a new contact | | update_contact | Update a contact |

Audiences

| Tool | Description | |------|-------------| | get_audience | Get an audience by ID | | create_audience | Create an audience with optional contacts | | update_audience | Update an audience's name or description | | delete_audience | Delete an audience | | add_audience_contacts | Add contacts to an audience | | remove_audience_contacts | Remove contacts from an audience |

Bulk Messaging

| Tool | Description | |------|-------------| | blast_sms | SMS blast to an audience | | blast_mms | MMS blast to an audience | | blast_rcs | RCS blast to an audience |

Phone Numbers

| Tool | Description | |------|-------------| | search_phone_numbers | Search available numbers to purchase | | get_phone_number_details | Get carrier, location, and contact info | | buy_phone_numbers | Purchase phone numbers | | attach_webhook_to_phone | Attach a webhook to a phone number | | detach_webhook_from_phone | Detach a webhook from a phone number | | attach_campaign_to_phones | Attach a campaign to phone numbers | | detach_campaign_from_phones | Detach a campaign from phone numbers |

RCS

| Tool | Description | |------|-------------| | get_rcs_capabilities | Check RCS support for phone numbers | | whitelist_rcs_number | Whitelist a number for RCS testing | | generate_rcs_link | Generate a deep link to open an RCS conversation |

Brands

| Tool | Description | |------|-------------| | autofill_brand | Auto-fill brand info using AI | | upsert_brand | Create or update a brand | | get_brand | Get brand details by ID | | submit_brand | Submit brand for carrier review | | validate_brand | Validate brand before submission | | vet_brand | Request external vetting for a brand |

Campaigns

| Tool | Description | |------|-------------| | autofill_dlc_campaign | Auto-fill 10DLC campaign using AI | | get_dlc_campaign | Get 10DLC campaign details | | submit_dlc_campaign | Submit 10DLC campaign for review | | upsert_dlc_campaign | Create or update a 10DLC campaign | | validate_dlc_campaign | Validate 10DLC campaign | | autofill_toll_free_campaign | Auto-fill toll-free campaign using AI | | get_toll_free_campaign | Get toll-free campaign details | | submit_toll_free_campaign | Submit toll-free campaign for review | | upsert_toll_free_campaign | Create or update a toll-free campaign | | validate_toll_free_campaign | Validate toll-free campaign | | autofill_rcs_campaign | Auto-fill RCS campaign using AI | | get_rcs_campaign | Get RCS campaign details | | submit_rcs_campaign | Submit RCS campaign for review | | upsert_rcs_campaign | Create or update an RCS campaign | | validate_rcs_campaign | Validate RCS campaign |

Status

| Tool | Description | |------|-------------| | get_brand_status | Brand registration status | | get_dlc_campaign_status | 10DLC campaign status | | get_toll_free_campaign_status | Toll-free campaign status | | get_rcs_campaign_status | RCS campaign status | | get_phone_number_status | Phone number status |

Utility

| Tool | Description | |------|-------------| | create_shortened_url | Create a tracked pncl.to short URL | | get_shortened_url | Get URL details and click analytics | | update_shortened_url | Update a shortened URL's destination or expiration | | upload_file | Generate presigned upload/download URLs | | refresh_file_urls | Refresh expired presigned file URLs | | get_contact_card | Get a contact card (vCard) by ID | | upsert_contact_card | Create or update a contact card |

Webhooks

| Tool | Description | |------|-------------| | get_webhooks | Get webhooks attached to phone numbers or URLs |

Documentation

| Tool | Description | |------|-------------| | search_pinnacle_docs | Search Pinnacle docs, guides, and API references |

Remote vs Local

| | Remote (mcp.pinnacle.sh) | Local (npx @pinnacle-rcs/mcp) | |---|---|---| | Setup | No install — just add the URL | Requires Node.js and npx | | Transport | Streamable HTTP | stdio | | Docs search | AI-powered answers with code examples and citations | Keyword search over the docs index | | Updates | Always latest | Depends on npm version |

The search_pinnacle_docs tool behaves differently depending on how the server is running. The hosted server returns full, contextual AI-powered answers with code examples and citations. The local package fetches the docs index and returns the most relevant pages ranked by keyword match.

Authentication

Uses the same PINNACLE-API-KEY from your Pinnacle Dashboard. No OAuth required.

• Remote: pass as PINNACLE-API-KEY header
• Local: set PINNACLE_API_KEY environment variable

Development

npm install
npm run typecheck    # type check
npm run build        # bundle with tsup
npm run dev          # run stdio server locally
npm run dev:http     # run HTTP server locally

Documentation

• Getting Started Guide
• API Reference
• Pinnacle Dashboard

License

MIT