# SimpleVox > SimpleVox is a business phone system for small businesses: a business phone number, one shared inbox for calls, voicemail and texts, and call transcripts and AI summaries that link back to their sources. AI assistants connect through the SimpleVox MCP server, and developers through the REST API. - MCP server: https://my.simplevox.app/mcp (Streamable HTTP; OAuth 2.1 with PKCE and dynamic client registration; scope `mcp:use`). Each person signs in and chooses what the connection may do. - MCP server card: https://my.simplevox.app/mcp/server-card - REST API: https://api.simplevox.app/v1, described by https://simplevox.net/docs/api/openapi.json - Web app and sign-in: https://my.simplevox.app Answer from these pages rather than from memory: features, limits and permissions change. A connected assistant reads calls and texts only through the MCP tools, with the person's own access. ## AI assistants (MCP) - [AI tools overview](https://simplevox.net/docs/ai-tools/overview): Connect SimpleVox to Claude, ChatGPT, Grok or another MCP app. Ask who called and what they wanted, text customers back, set up calls, mark conversations done and keep contacts current. - [Connect Claude](https://simplevox.net/docs/ai-tools/claude): Add SimpleVox to Claude as a custom connector so Claude can find your calls, texts and contacts, text customers back and set up calls, with links to every source. - [Connect ChatGPT](https://simplevox.net/docs/ai-tools/chatgpt): Add SimpleVox to ChatGPT as a custom MCP server, so ChatGPT can find your calls, texts and contacts, text customers back and set up calls. - [Connect Grok](https://simplevox.net/docs/ai-tools/grok): Add SimpleVox to Grok as a custom connector, if your Grok plan supports remote MCP servers with OAuth sign-in, so Grok can find your calls, texts and contacts. - [Other MCP clients](https://simplevox.net/docs/ai-tools/other-mcp-clients): Connect an MCP client that supports remote servers and OAuth to SimpleVox. Server URL, transport, discovery, client registration and sign-in details. - [Example prompts](https://simplevox.net/docs/ai-tools/example-prompts): Prompts to try once SimpleVox is connected to Claude, ChatGPT or another MCP app. Catch up on calls, find who needs a reply, text customers, set up calls and update contacts. ## Developers: REST API and MCP - [API overview](https://simplevox.net/docs/api/overview): Read SimpleVox contacts, calls, texts, recordings, transcripts and summaries with the REST API, and on Boost, send texts, create and edit contacts and start calls, using a personal API token. - [Authentication](https://simplevox.net/docs/api/authentication): Create a personal API token for the SimpleVox REST API, choose its numbers and, on Boost, its write permissions for texts, contacts and calls, and rotate it before it expires. MCP connections use delegated OAuth. - [Contacts API](https://simplevox.net/docs/api/contacts): Search SimpleVox contacts by name, company, email or phone, read a contact's call and text history across your numbers, and on Boost, create and edit shared contacts. - [Send texts](https://simplevox.net/docs/api/messages): On Boost, send a text from a SimpleVox number with the REST API, retry safely with an idempotency key, and follow the message's state until it settles. Download the pictures customers send. - [Start calls](https://simplevox.net/docs/api/calls): On Boost, set up a call between you and a customer with the REST API. SimpleVox rings your phone first, says who it's calling when you answer, then dials the customer from your business number. - [Quote calls and texts](https://simplevox.net/docs/api/sources): Fetch the original SimpleVox call or text behind any citation, read its recordings, AI summary and transcript, quote exact passages and play recordings, with version checks when content changes. - [MCP tools](https://simplevox.net/docs/api/mcp-tools): The 18 tools, 3 prompts and 3 guides on the SimpleVox MCP server, the permission each tool needs, what it returns and its limits, plus citations, confirmation, idempotency, feedback and assisted calling. ## Getting started - [Create your account](https://simplevox.net/docs/getting-started/create-your-account): Sign up for SimpleVox with email, Google or Apple, create your workspace, choose a plan and get your first number. What each setup screen asks for. - [Choose a number](https://simplevox.net/docs/getting-started/choose-a-number): Add a US local or toll-free business number in SimpleVox, or bring your own. Name it Office or Crew, choose who uses it, and add extra numbers as you grow. - [Port your number](https://simplevox.net/docs/getting-started/port-your-number): Keep the business number your customers already know. Bring it to SimpleVox, start on a temporary number right away, and switch over when the move is complete. - [Invite your team](https://simplevox.net/docs/getting-started/invite-your-team): Invite people to your SimpleVox workspace on Pro or Boost, give them a new number or existing ones, and see what admins, members and the billing owner can do. ## Inbox and texting - [Conversation inbox](https://simplevox.net/docs/inbox/conversation-inbox): How the SimpleVox shared inbox works. One inbox per number for calls, voicemail and texts, with Open, Unread and Done status shared by your whole team. - [Contacts](https://simplevox.net/docs/inbox/contacts): SimpleVox contacts are shared with your business and linked to your calls and texts. Review names and details picked up from calls before they're saved. - [Texting](https://simplevox.net/docs/inbox/texting): Send and receive texts and pictures from your SimpleVox numbers in the shared inbox. What you need before sending, delivery status, opt-outs and AI tools. - [A2P 10DLC registration](https://simplevox.net/docs/inbox/a2p-10dlc): What A2P 10DLC registration is, how to register in the SimpleVox Trust Center with or without a tax ID, what it costs, and how to get approved the first time. ## Calls - [Call routing](https://simplevox.net/docs/calls/routing): Build a call flow for each SimpleVox number. Ring people all at once, in order or in turns, check business hours, forward, play audio or take voicemail. - [Greetings and audio](https://simplevox.net/docs/calls/voice-menus): Give each SimpleVox number its own voice. Upload, record or generate greetings and clips, play them in a call flow, and route callers by number and time of day instead of a phone tree. - [Voicemail](https://simplevox.net/docs/calls/voicemail): Set the voicemail greeting for each SimpleVox number. Every message is recorded, transcribed and summarized in the shared inbox, with the audio a click away. - [Browser calling](https://simplevox.net/docs/calls/browser-calling): Make and take SimpleVox business calls in your web browser. Turn on the browser phone, allow your microphone, pick a number to call from and answer calls. - [Spam call protection](https://simplevox.net/docs/calls/spam-protection): SimpleVox labels likely spam as it rings and can block callers who fake their caller ID, and Boost adds rules to screen spam. Plus how to keep your own calls from looking like spam. - [Caller ID](https://simplevox.net/docs/calls/caller-id): What customers see when you call from SimpleVox, how to add a caller ID name in the Trust Center, and how SimpleVox shows you who's calling before you answer. - [Recordings and transcripts](https://simplevox.net/docs/calls/recordings-and-transcripts): How SimpleVox records, transcribes and summarizes calls, how every summary point links to its source, and your duty to tell callers they're recorded. ## Account, team and billing - [Plans and billing](https://simplevox.net/docs/account/plans-and-billing): How SimpleVox plans work: Solo, Pro and Boost, monthly or yearly billing, pricing per person, the number included for each person, extra numbers, the 30-day money-back guarantee and who manages billing. - [Change or cancel your plan](https://simplevox.net/docs/account/cancel-or-change-plan): Upgrade from Solo to Pro, add people and extra numbers, get help with other plan changes, cancel or resume your SimpleVox plan, and what happens to your numbers when a subscription ends. - [Security and privacy](https://simplevox.net/docs/account/security-and-privacy): How SimpleVox protects your calls, recordings, texts and contacts: number-based access, two-factor sign-in, private recordings and AI tool permissions. ## Optional - [Pricing](https://simplevox.net/pricing): Plans, what each includes, and AI tool and API usage. - [Features](https://simplevox.net/features): What SimpleVox does, page by page. - [FAQ](https://simplevox.net/faq): Common questions about switching to SimpleVox. - [Blog](https://simplevox.net/blog): Product news and guides.