# Allo > Allo is the business phone system that handles the work your calls create: a shared business number for the whole team, AI that answers and writes up every call, and the follow-up actions landing in your CRM instead of on someone's list. Allo runs on iOS, Android, macOS, Windows and the web. It is sold per seat, monthly or annually, with no contract. Pick a new local number and be live in minutes, or port the number you already have for free. Allo is API-first. Everything the apps do runs on the same public REST API, every account can use it on every plan, and an MCP server puts that same surface in front of an AI assistant. The two sections below carry the real routes, webhook topics and tool names, so a build or integration question can be answered from this file without guessing at an endpoint. How to use this file: - Read the Grounding section before quoting a price, a plan boundary or a feature limit. Those files are generated from the same content the pages render from, so they cannot drift from what a visitor sees. - The API, MCP and Documentation sections are the integration surface. Reference material lives on help.withallo.com, which publishes its own llms.txt covering setup, billing, troubleshooting and all 110 pages of the API reference. - Every page below exists in English, French, Spanish and German. The links are the English ones. For the others, insert the locale segment after the host: /fr, /es or /de. ## Grounding - [Allo, in markdown](https://www.withallo.com/en/home.md): What Allo is, who it is for, what it connects to and how to start, as plain text with no layout to parse. Generated from the home page's own content. - [Pricing](https://www.withallo.com/pricing): The live plans and per-seat prices. This page wins over any cached number, including the two files below. - [Plans and prices, in markdown](https://www.withallo.com/allo-pricing.md): Plans, seat prices and what each tier includes, as a table. Carries the date it was written: check it against the pricing page before quoting. - [Plan comparison, in markdown](https://www.withallo.com/allo-pricing-comparison.md): Feature-by-feature comparison of every plan, in the same machine-readable form. ## The API Fourteen resources on one base URL. A small, focused API with no sprawling legacy endpoints and no mystery deprecations. - [API overview](https://www.withallo.com/api): What the API covers, what it is used for, and the shape of a first request. - [Full API reference, in markdown](https://help.withallo.com/_llms/en/api-reference.md): Every endpoint, field by field, as one plain-text file. 110 pages of reference an assistant can read in a single fetch. - [API reference](https://help.withallo.com/en/v2/api-reference/introduction): The same reference as browsable documentation. - [OpenAPI schema](https://help.withallo.com/openapi.json): The machine-readable API description, for generating a client. How it works, in four facts: - **One header, one key.** Generate a key in your workspace settings and send it as Authorization: Api-Key. That is the whole handshake. - **Scoped permissions.** A key carries only the scopes you grant it, and GET /v2/api/me answers with the scopes and the endpoints it can actually reach. - **Pagination that says when to stop.** page and size, up to 100 per request, with total_count and has_more in every paginated response. - **Rate limits you can plan around.** 20 reads and 5 writes per second per key, with X-RateLimit-Remaining and X-RateLimit-Reset on the way back. ### Resources - **Conversations** — The unified call and SMS timeline, with keyword search across transcripts and message content. `GET /v2/api/conversations`, `POST /v2/api/conversations/items/search`, `POST /v2/api/conversations/items/batch` - **SMS** — Send SMS and MMS from your Allo numbers or from a registered sender ID. `POST /v1/api/sms` - **CRM** — Create, read, update and search people, companies and deals. `/v2/api/crm/people`, `/v2/api/crm/companies`, `POST /v2/api/crm/deals/search` - **Notes** — Internal team notes on a conversation or a person profile, with @mentions. `/v2/api/conversations/{contact_number}/notes`, `/v2/api/crm/people/{person_id}/notes` - **Threads** — Team discussion threads hanging off a call, an SMS or a conversation note. `/v2/api/threads` - **Webhooks** — Event notifications with HMAC signatures and automatic retries. `GET /v2/api/webhooks`, `POST /v2/api/webhooks`, `GET /v2/api/webhooks/event_types` - **Phone numbers** — Your Allo numbers with their capabilities and member access, plus the inbound call flow. `GET /v2/api/numbers`, `GET /v2/api/numbers/{number}/call_flow`, `PUT /v2/api/numbers/{number}/call_flow/draft` - **Users** — The team roster with roles and assigned numbers, and what your API key can do. `GET /v2/api/users`, `GET /v2/api/me` - **Tags** — Create and list call tags, then add and remove them on calls and texts. `GET /v2/api/tags`, `POST /v2/api/conversations/items/{id}/tags`, `DELETE /v2/api/conversations/items/{id}/tags/{tag}` - **Summary templates** — The templates that shape how the AI structures a call summary. `GET /v2/api/summary_templates`, `POST /v2/api/summary_templates`, `PUT /v2/api/summary_templates/{id}` - **Analytics** — Team KPIs with period-over-period comparison and a per-user breakdown. `POST /v2/api/analytics/overview`, `POST /v2/api/analytics/outbound` - **Dialing queues** — Read and fill the Power Dialer queue. `GET /v2/api/dialing-queues/current`, `POST /v2/api/dialing-queues/current/numbers`, `DELETE /v2/api/dialing-queues/current/numbers` - **AI receptionist** — Configure the receptionist: its prompt, its voice, its knowledge and whether it is on. `GET /v2/api/numbers/{number}/agent`, `PATCH /v2/api/numbers/{number}/agent`, `PUT /v2/api/numbers/{number}/agent/prompt` - **Partner** — Provision and manage Allo accounts as a white-label reseller. `/v2/api/partner/accounts` ### Webhook topics Skip the polling. Point Allo at a URL, pick your topics, and the payload arrives with the AI summary and the transcript already in it, the second the call wraps or the text lands. - `call.received`: An inbound call lands on one of your numbers - `call.triggered`: A call starts, inbound or outbound - `call.answered`: Someone picks up, a teammate or the AI receptionist - `call.completed`: The call ends, summary and transcript included - `sms.received`: An inbound text arrives - `sms.sent`: A text goes out, from anywhere in Allo - `summary.updated`: An AI summary is written or edited - `tag.added`: A tag is applied to a call or a text - `tag.removed`: A tag is taken off - `contact.created`: A new contact appears in your workspace - `contact.updated`: A name, a number or a company changes ## MCP for AI assistants Allo ships a Model Context Protocol server, so an assistant can work an account directly: read its calls, search its transcripts, send a text, queue a dialing list, and configure the AI receptionist. Where this file describes Allo, the MCP server hands an assistant the account's own data, which is the better answer to any question about a specific workspace. - [MCP overview and install](https://www.withallo.com/mcp): What the server exposes and how to connect it to Claude, Claude Code, Codex, Cursor or VS Code. - [MCP setup documentation](https://help.withallo.com/en/integrations/mcp): The reference for connecting and authenticating the server. ### Tools **Discovery** - `allo_get_me`: scopes, team, endpoints - `allo_list_users`: roles and status - `allo_list_numbers`: voice and SMS capabilities - `allo_list_tags`: every tag on your team **Conversations** - `allo_list_conversations`: grouped by contact - `allo_search_conversation_items`: filter by keyword, tag, date - `allo_get_conversation_item`: full call or SMS with transcript - `allo_batch_get_conversation_items`: up to 100 in one call - `allo_mark_conversation`: read, unread, archive **Actions** - `allo_add_call_tags`: tag a call - `allo_remove_call_tag`: untag a call - `allo_send_sms`: text from any Allo number - `allo_add_to_dialing_queue`: queue numbers in the Power Dialer - `allo_get_dialing_queue`: read the dialing queue and state **AI receptionist** - `allo_get_agent`: the whole receptionist config in one call - `allo_update_agent`: business, voice, hours, transfer rules - `allo_set_agent_prompt`: objective, personality, behaviors - `allo_set_agent_status`: put it on the line, or take it off - `allo_list_voices`: voices it can answer with **Knowledge & calendars** - `allo_add_agent_knowledge_website`: a page for it to answer from - `allo_set_agent_knowledge_website_status`: pause a page without deleting it - `allo_delete_agent_knowledge`: drop a page or a document - `allo_list_calendars`: what is connected to the workspace - `allo_get_calendar`: its event types, for booking rules **Analytics** - `allo_get_team_analytics`: KPIs, talk time, answer rate - `allo_get_team_outbound_analytics`: funnel, heatmap, leaderboard ## Documentation - [Help center llms.txt](https://help.withallo.com/llms.txt): The same kind of map for the documentation host: getting started, phone numbers, SMS, call flows, billing, integrations and the full API reference. - [Help center](https://help.withallo.com/en/get-started/index.md): The documentation home, in markdown. - [What is Allo?](https://help.withallo.com/en/get-started/what-is-allo.md): The product explained for someone setting it up rather than buying it. ## What Allo does ### AI receptionist & IVR - [AI Receptionist](https://www.withallo.com/product/ai-receptionist): An AI that answers, qualifies and books while you're busy. - [AI answering service](https://www.withallo.com/product/ai-answering-service): AI answers, qualifies and captures the message 24/7. - [AI IVR](https://www.withallo.com/product/ai-ivr): A phone menu with an AI that understands and routes callers. - [IVR / phone menu](https://www.withallo.com/product/ivr): A phone menu that sends callers to the right place. ### Recording & AI notes - [Call Recording & Transcription](https://www.withallo.com/product/call-recording): Record and transcribe every call, searchable in seconds. - [AI Summaries](https://www.withallo.com/product/ai-summaries): Every call written up automatically, ready to share. - [Summary Templates](https://www.withallo.com/product/summary-templates): Summaries in your team's format, set per number. - [Post-Call Actions](https://www.withallo.com/product/post-call-actions): AI drafts the follow-up email, SMS and CRM update. - [AI Call Tags](https://www.withallo.com/product/call-tags): Calls auto-tagged by topic, outcome and intent. - [Call Threads](https://www.withallo.com/product/threads): Discuss a call with your team, right on the call. - [Voicemail to text](https://www.withallo.com/product/voicemail-to-text): Every voicemail transcribed to text and synced to your CRM. ### Calls & dialing - [Call Routing](https://www.withallo.com/product/call-routing): Ring your team simultaneously or in cascade. - [Cascade & simultaneous ring](https://www.withallo.com/product/cascade-and-simultaneous-ring): Ring your whole team at once or one after another. - [Click to call](https://www.withallo.com/product/click-to-call): Dial any number in one click, from your CRM or browser. - [Call forwarding](https://www.withallo.com/product/call-forwarding): Forward calls to any device or teammate, in ring or cascade. - [Power Dialer](https://www.withallo.com/product/power-dialer): Work a call list back to back, no manual dialing. - [VoIP dialer](https://www.withallo.com/product/voip-dialer): Call from any device and work a list back to back. - [VoIP caller ID](https://www.withallo.com/product/voip-caller-id): Show your business number and see who's calling, matched to your CRM. - [Spam call blocker](https://www.withallo.com/product/spam-call-blocker): Screen robocalls and spam with AI, so only real leads ring. ### Messaging - [SMS / MMS](https://www.withallo.com/product/sms): Two-way business texting with media and voice notes. - [Automatic SMS](https://www.withallo.com/product/missed-call-text-back): Auto-text every missed call so no lead goes cold. - [WhatsApp business number](https://www.withallo.com/product/whatsapp-business-number): Register a real Allo number on WhatsApp, verified by call. - [Text US numbers](https://www.withallo.com/product/text-us-numbers): Text US numbers with A2P 10DLC handled for you. ### Phone numbers - [Second phone number](https://www.withallo.com/phone-number/second-phone-number): A real business line, local or mobile, on all your devices. - [Number porting](https://www.withallo.com/porting): Bring your existing numbers to Allo, for free. - [International calling](https://www.withallo.com/product/international-calling): Call 192 destinations from your business number. ### Integrations & analytics - [CRM native sync](https://www.withallo.com/en/integrations#crm): Two-way sync with your CRM, no Zapier in between. - [MCP + Claude connector](https://www.withallo.com/mcp): Run Allo from Claude and your favorite AI tools. - [Public API + Webhooks](https://www.withallo.com/api): Build on Allo with a REST API and webhooks. - [Analytics / call reporting](https://www.withallo.com/product/analytics): Team dashboards, funnels and connection heatmaps. - [All features](https://www.withallo.com/product): The full directory, searchable, with the plan each feature belongs to. ## Allo compared with other phone systems Each page is a direct comparison: what the other tool does well, where it stops, what moving costs, and what carries over. - [Allo vs 3CX](https://www.withallo.com/alternative/3cx): Allo compared with 3CX, feature by feature, with pricing and what switching involves. - [Allo vs 8x8](https://www.withallo.com/alternative/8x8): Allo compared with 8x8, feature by feature, with pricing and what switching involves. - [Allo vs Aircall](https://www.withallo.com/alternative/aircall): Allo compared with Aircall, feature by feature, with pricing and what switching involves. - [Allo vs CloudTalk](https://www.withallo.com/alternative/cloudtalk): Allo compared with CloudTalk, feature by feature, with pricing and what switching involves. - [Allo vs Dialpad](https://www.withallo.com/alternative/dialpad): Allo compared with Dialpad, feature by feature, with pricing and what switching involves. - [Allo vs Fonio](https://www.withallo.com/alternative/fonio): Allo compared with Fonio, feature by feature, with pricing and what switching involves. - [Allo vs GetBreezy](https://www.withallo.com/alternative/getbreezy): Allo compared with GetBreezy, feature by feature, with pricing and what switching involves. - [Allo vs GoodCall](https://www.withallo.com/alternative/goodcall): Allo compared with GoodCall, feature by feature, with pricing and what switching involves. - [Allo vs Google Voice](https://www.withallo.com/alternative/google-voice): Allo compared with Google Voice, feature by feature, with pricing and what switching involves. - [Allo vs Grasshopper](https://www.withallo.com/alternative/grasshopper): Allo compared with Grasshopper, feature by feature, with pricing and what switching involves. - [Allo vs JustCall](https://www.withallo.com/alternative/justcall): Allo compared with JustCall, feature by feature, with pricing and what switching involves. - [Allo vs KrispCall](https://www.withallo.com/alternative/krispcall): Allo compared with KrispCall, feature by feature, with pricing and what switching involves. - [Allo vs LeadDesk](https://www.withallo.com/alternative/leaddesk): Allo compared with LeadDesk, feature by feature, with pricing and what switching involves. - [Allo vs Microsoft Teams Phone](https://www.withallo.com/alternative/microsoft-teams-phone): Allo compared with Microsoft Teams Phone, feature by feature, with pricing and what switching involves. - [Allo vs Nextiva](https://www.withallo.com/alternative/nextiva): Allo compared with Nextiva, feature by feature, with pricing and what switching involves. - [Allo vs OnOff](https://www.withallo.com/alternative/onoff): Allo compared with OnOff, feature by feature, with pricing and what switching involves. - [Allo vs Ooma](https://www.withallo.com/alternative/ooma): Allo compared with Ooma, feature by feature, with pricing and what switching involves. - [Allo vs Quicktalk](https://www.withallo.com/alternative/quicktalk): Allo compared with Quicktalk, feature by feature, with pricing and what switching involves. - [Allo vs Quo](https://www.withallo.com/alternative/quo): Allo compared with Quo, feature by feature, with pricing and what switching involves. - [Allo vs RingCentral](https://www.withallo.com/alternative/ringcentral): Allo compared with RingCentral, feature by feature, with pricing and what switching involves. - [Allo vs Ringover](https://www.withallo.com/alternative/ringover): Allo compared with Ringover, feature by feature, with pricing and what switching involves. - [Allo vs Skype](https://www.withallo.com/alternative/skype): Allo compared with Skype, feature by feature, with pricing and what switching involves. - [Allo vs Truecaller](https://www.withallo.com/alternative/truecaller): Allo compared with Truecaller, feature by feature, with pricing and what switching involves. - [Allo vs Vonage](https://www.withallo.com/alternative/vonage): Allo compared with Vonage, feature by feature, with pricing and what switching involves. - [Allo vs Yeastar](https://www.withallo.com/alternative/yeastar): Allo compared with Yeastar, feature by feature, with pricing and what switching involves. - [All comparisons](https://www.withallo.com/alternative): Every competitor comparison in one index. ## Buying guides and comparisons Multi-vendor guides, not product pages. They name and rank competitors, Allo included, and they carry the pricing behind each claim. - [The best cloud PBX phone systems](https://www.withallo.com/blog/best-cloud-pbx-phone-systems): Eight cloud PBX providers compared on price, setup and hidden fees. - [The best VoIP phone systems for small businesses](https://www.withallo.com/blog/best-voip-phone-systems-for-small-businesses): A shortlist for teams under 20 people, with what each one is actually good at. - [The best phone systems for small business](https://www.withallo.com/blog/best-phone-systems-for-smbs): Our selection, by the size and shape of the team buying it. - [The best cloud phone systems for small businesses](https://www.withallo.com/blog/best-cloud-phone-systems-for-small-businesses): Eight cloud systems ranked, with the per-seat cost of each. - [What is an AI receptionist?](https://www.withallo.com/blog/ai-receptionist): What an AI receptionist does, what it costs, and how the main options compare. - [The best AI answering services](https://www.withallo.com/blog/best-ai-answering-services-guide): Seven AI answering services, with pricing and the limits of each. - [The best auto-attendant phone systems](https://www.withallo.com/blog/best-auto-attendant-phone-systems): Auto-attendant and phone-menu systems compared on price and features. - [Call routing software](https://www.withallo.com/blog/call-routing-software): Cascade, round-robin and skills-based routing, and which tools do which. - [The best power dialers](https://www.withallo.com/blog/best-power-dialers): Eight power dialers compared, including what each one connects to. - [The best call recording apps](https://www.withallo.com/blog/best-call-recording-software): Call recording tools, with the consent and retention rules that apply. - [Sales call recording software](https://www.withallo.com/blog/best-sales-call-recording-software): Five options for sales teams, with features and pricing. - [Second phone number for business](https://www.withallo.com/blog/best-second-phone-numbers-providers): Six ways to get a second business number on the phone you already own. - [What is a VoIP phone number?](https://www.withallo.com/blog/voip-phone-numbers): What a VoIP number is, how to get one, and what it can and cannot do. - [How to get a business phone number](https://www.withallo.com/blog/how-to-get-a-business-phone-number): Five providers compared, with the realistic cost of each. - [The best RingCentral alternatives](https://www.withallo.com/blog/best-alternatives-to-ringcentral): What to move to when RingCentral is more system than the team needs. - [The best Ooma alternatives](https://www.withallo.com/blog/best-ooma-alternatives): Eight alternatives to Ooma and what each one is better at. - [The best Aircall alternatives](https://www.withallo.com/blog/aircall-alternatives): Eight alternatives to Aircall, compared on price and CRM depth. - [The best Google Voice alternatives for business](https://www.withallo.com/blog/best-google-voice-alternatives-for-business): What to use once Google Voice stops being enough for a team. ## Integrations - [Apollo](https://www.withallo.com/integrations/apollo): Log every call to the right Apollo contact and keep your prospecting data clean automatically - [Attio](https://www.withallo.com/integrations/attio): Sync calls, notes and AI summaries straight into your Attio records in real time - [Brevo](https://www.withallo.com/integrations/brevo): Turn call outcomes into Brevo contacts and trigger the right follow-up campaign - [Claap](https://www.withallo.com/integrations/claap): Send call recordings and transcripts to Claap so your team can review and coach - [Folk](https://www.withallo.com/integrations/folk): Keep your Folk pipeline current with calls, contacts and notes synced after every conversation - [Google Contacts](https://www.withallo.com/integrations/google-contacts): Match incoming calls to your Google Contacts and keep numbers in sync both ways - [Google Sheets](https://www.withallo.com/integrations/google-sheets): Push call logs and outcomes to a live spreadsheet for reporting and automations - [HubSpot](https://www.withallo.com/integrations/hubspot): Auto-log calls, summaries and next steps on the matching HubSpot deal and contact - [Intercom](https://www.withallo.com/integrations/intercom): Route call context into Intercom and keep support conversations connected to the phone - [Make](https://www.withallo.com/integrations/make): Trigger any Make scenario from a call event and connect Allo to thousands of apps - [Notion](https://www.withallo.com/integrations/notion): Drop call notes and AI summaries into a Notion database your whole team can search - [Odoo](https://www.withallo.com/integrations/odoo): Connect calls to Odoo contacts and keep your business data aligned across teams - [Pipedrive](https://www.withallo.com/integrations/pipedrive): Log calls and outcomes on the right Pipedrive deal and move your pipeline forward - [QuickBooks](https://www.withallo.com/integrations/quickbooks): Tie calls to the right account and keep billing and invoicing context in one place - [Salesforce](https://www.withallo.com/integrations/salesforce): Auto-log activities, summaries and follow-ups on the matching Salesforce records - [Sellsy](https://www.withallo.com/integrations/sellsy): Keep your Sellsy CRM current with calls and contacts captured automatically - [Shopify](https://www.withallo.com/integrations/shopify): Match calls to Shopify customers and turn conversations into orders and follow-ups - [Streak](https://www.withallo.com/integrations/streak): Log calls inside your Gmail-based Streak pipeline without leaving the inbox - [Webhook](https://www.withallo.com/integrations/webhook): Send any call event to your own stack and build the workflow you need - [Zapier](https://www.withallo.com/integrations/zapier): Connect Allo to 7,000+ apps and automate follow-ups from any call event - [Zoho CRM](https://www.withallo.com/integrations/zoho-crm): Auto-log calls and summaries on the right Zoho CRM record across your team - [Zoho Flow](https://www.withallo.com/integrations/zoho-flow): Trigger Zoho Flow automations from call events and connect your back office - [All integrations](https://www.withallo.com/integrations): The full catalogue, filterable by tool type and by what you would connect it for. ## By industry - [Restaurants](https://www.withallo.com/industries/restaurant): Answer every reservation and takeout call, even mid-service. - [Real estate](https://www.withallo.com/industries/real-estate): Reach every buyer and seller lead before your competition. - [Financial advisors](https://www.withallo.com/industries/financial-advisors): Every client call answered, recorded and written up for you. - [Insurance agencies](https://www.withallo.com/industries/insurance-agencies): Answer quotes and claims day or night, routed to the right desk. - [Sales teams](https://www.withallo.com/industries/sales-teams): More conversations, less dialing, every call logged to your CRM. - [Software companies](https://www.withallo.com/industries/saas): A phone system that fits your stack, your API and your CRM. - [Home services](https://www.withallo.com/industries/home-services): Never miss a job while your techs are on site, day or night. - [Law firms](https://www.withallo.com/industries/law-firms): Answer and intake every new client, even while you're in court. - [Healthcare](https://www.withallo.com/industries/healthcare): Answer every patient call under a signed HIPAA BAA. - [Medical & dental](https://www.withallo.com/industries/medical-practices): Answer every patient call and book appointments 24/7. - [Salons & spas](https://www.withallo.com/industries/salons-spas): Book appointments and cut no-shows, even while you're with a client. - [Property management](https://www.withallo.com/industries/property-management): Answer tenant calls and maintenance requests around the clock. - [Auto repair](https://www.withallo.com/industries/auto-repair): Book service and answer status calls without leaving the bay. - [Veterinary clinics](https://www.withallo.com/industries/veterinary): Answer every pet owner and book appointments 24/7. - [Accounting & tax](https://www.withallo.com/industries/accounting): Capture every new-client call through your busiest season. - [Construction](https://www.withallo.com/industries/construction): Answer bid and project calls while you're out on the site. - [Metal fabrication](https://www.withallo.com/industries/metal-fabrication): Answer every quote and shop call across all your locations. - [All industries](https://www.withallo.com/industries): Every industry page in one index. ## Optional - [Customer stories](https://www.withallo.com/use-cases): Named companies, what they replaced and what changed after. - [AI workflows](https://www.withallo.com/ai-workflows): Ready-made automations for what happens after a call. - [Local numbers](https://www.withallo.com/local-numbers): Local numbers by US area code, and what each one covers. - [Porting](https://www.withallo.com/porting): Moving an existing number to Allo: what is needed and how long it takes. - [Academy](https://www.withallo.com/academy): Allo's cold-calling course, lesson by lesson. - [Changelog](https://www.withallo.com/changelog): What shipped, dated. - [About Allo](https://www.withallo.com/about): Who builds Allo and why. - [Download](https://www.withallo.com/download): The apps for iOS, Android, macOS and Windows. - [Contact](https://www.withallo.com/contact-us): How to reach sales and support, including the number a person answers. ### Other languages - [Allo en français](https://www.withallo.com/fr): The French site. Replace the /fr segment to reach any page above. - [Allo en español](https://www.withallo.com/es): The Spanish site. - [Allo auf Deutsch](https://www.withallo.com/de): The German site.