--- title: "Connect OneSignal to fastbill - APIANT.ai" description: "When \"New Notification Created\" fires in OneSignal, your agent runs \"Add Payment for Invoice\" in fastbill." canonical: "https://apiant.ai/connect/onesignal-to-fastbill" --- # Connect OneSignal to fastbill When **New Notification Created** fires in [OneSignal](https://apiant.ai/connections/onesignal), your agent runs **Add Payment for Invoice** in [fastbill](https://apiant.ai/connections/fastbill). Describe the whole flow and it is built, tested on every scenario and kept running. OneSignal **1** trigger OneSignal **17** actions fastbill **18** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want OneSignal and fastbill to do together? Give your AI client this address. `https://mcp.apiant.ai` One connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser. ### Set it up in your client ### Claude Code Run this in the directory you want to work in. `claude mcp add --transport http -s project apiant-ai https://mcp.apiant.ai` Start Claude Code there, approve the server, and sign in in the browser page it opens. [Claude Code guide (opens in a new tab)](https://apiant.ai/docs/mcp/claude-code) ### Claude, web and desktop Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Cursor Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Zed Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Codex and the ChatGPT desktop app Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Any other MCP client Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) Example flows ## What OneSignal can start in fastbill - When **New Notification Created** in OneSignal then **Add Payment for Invoice** in fastbill - When **New Notification Created** in OneSignal then **Create Customer** in fastbill Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships. Everything your agent can do with OneSignal and fastbill ## Triggers and actions 1 trigger · 35 actions - Trigger **New Notification Created** Triggers when a new message (push, email or SMS) is created in your OneSignal app. - Action **Add custom event** Records a custom event, such as a purchase or milestone, against a OneSignal user identified by External ID or OneSignal ID. - Action **Add segment** Creates a segment in your OneSignal app from a set of audience filters. - Action **Add subscription** Adds a new email, SMS or push subscription to an existing OneSignal user, found by one of the user's aliases such as their External ID. - Action **Add user** Creates a OneSignal user identified by an External ID, with optional tags, profile properties and subscriptions. If the External ID already exists, the user's subscriptions are updated instead. - Action **Delete notification** Cancels a scheduled or currently sending OneSignal message so it stops going out. - Action **Delete segment** Deletes a segment from your OneSignal app. The users and subscriptions in the segment are not deleted. - Action **Delete user** Deletes a OneSignal user along with all of their properties, subscriptions and identity aliases. - Action **Get notification** Returns the details of a single OneSignal message, including its content, delivery statistics and outcomes. - Action **Get user** Returns a OneSignal user, including their aliases, properties (tags, country, activity dates) and subscriptions. - Action **List notifications** Returns the push, email and SMS messages sent from your OneSignal app, newest first, with their content and delivery stats. - Action **List segments** Returns all segments in your OneSignal app, with each segment's name, description, status and dates. - Action **List templates** Returns the message templates in your OneSignal app, optionally filtered to push, email or SMS templates. - Action **Send Advanced Push Notification** Sends a push notification with OneSignal's full set of options: audience targeting by users, subscriptions, segments or filters, plus images, icons, buttons, sounds, badges, platform selection, scheduling and throttling. - Action **Send email** Sends an email message through OneSignal to email addresses, users, subscriptions or segments, using your own content or a saved template. - Action **Send Push Notification** Sends a push notification to your OneSignal app's subscribers, chosen by segment, filters, user alias or subscription ID. Returns the ID of the notification that was created. - Action **Send SMS** Sends an SMS or MMS text message through OneSignal to phone numbers, users, subscriptions or segments, and returns the new message's ID. - Action **Update user** Updates a OneSignal user's properties, such as tags, language, timezone, location and country, and records session activity and purchases. - Action **Add Payment for Invoice** Adds full payment for invoice - Action **Add Payment for Revenue** Adds full payment for revenue - Action **Create Customer** Creates a new customer in FastBill - Action **Create Invoice** Creates a new invoice - Action **Create Offer** Creates a new offer in FastBill - Action **Create Revenue** Creates a revenue entry - Action **Delete Customer** Delete a FastBill customer by ID. - Action **Delete Invoice** Delete a FastBill invoice by ID. - Action **Delete Offer** Delete a FastBill offer/estimate by ID. - Action **Finalize Invoice** Converts an invoice draft to a final invoice - Action **Get Customer** Fetch a single FastBill customer by ID. - Action **Get Invoice** Fetch a single FastBill invoice by ID. - Action **Get Offer** Fetch a single FastBill offer/estimate by ID. - Action **Search Customer** Search for a Customer - Action **Search Invoice** Find an invoice - Action **Send Invoice by Email** Send an invoice by email - Action **Update Customer** Update fields on an existing FastBill customer. - Action **Update Invoice** Update fields on an existing (draft) FastBill invoice. ## Each app on its own - [ **OneSignal** OneSignal is a simple and smart service that send push notifications across all platforms.](https://apiant.ai/connections/onesignal) - [ **fastbill** FastBill is a cloud app for German invoicing & accounting.](https://apiant.ai/connections/fastbill) Reviews ## What our customers say ## More from OneSignal - [ **OneSignal to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/onesignal-to-salesforce) - [ **OneSignal to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/onesignal-to-slack) - [ **OneSignal to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/onesignal-to-stripe) - [ **OneSignal to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/onesignal-to-shopify) - [ **OneSignal to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/onesignal-to-quickbooks-online) - [ **OneSignal to Pipedrive** Pipedrive is a sales CRM and pipeline management tool.](https://apiant.ai/connect/onesignal-to-pipedrive) ## More into fastbill - [ **FreeAgent to fastbill** FreeAgent is cloud accounting software for small businesses and freelancers — manage contacts, invoices...](https://apiant.ai/connect/freeagent-to-fastbill) - [ **HubSpot to fastbill** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-fastbill) - [ **Salesforce to fastbill** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-fastbill) - [ **Slack to fastbill** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-fastbill) - [ **Google Sheets to fastbill** Google Sheets](https://apiant.ai/connect/google-sheets-to-fastbill) - [ **Gmail to fastbill** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-fastbill) Questions ## OneSignal and fastbill, answered ### ### What can start an automation from OneSignal? Any of OneSignal's 1 trigger in the catalog, including New Notification Created. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in fastbill when something happens in OneSignal? Any of fastbill's 18 actions, including Create Customer, Create Invoice, Create Offer and Create Revenue. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from fastbill to OneSignal? fastbill has no triggers in the catalog today, so automations start in OneSignal. If you need the other direction, ask: your agent reads fastbill's API documentation and adds it. ### ### Do I have to build a connector for OneSignal or fastbill? No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running. ### ### Can my AI client use OneSignal and fastbill without building an automation? Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both. ### ### What happens when something fails? Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships. ### ### Is there a free plan? Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.