--- title: "Connect Manychat to fastbill - APIANT.ai" description: "When \"New or Updated Custom Field\" fires in Manychat, your agent runs \"Add Payment for Invoice\" in fastbill." canonical: "https://apiant.ai/connect/manychat-to-fastbill" --- # Connect Manychat to fastbill When **New or Updated Custom Field** fires in [Manychat](https://apiant.ai/connections/manychat), 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. Manychat **1** trigger Manychat **12** 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 Manychat 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 Manychat can start in fastbill - When **New or Updated Custom Field** in Manychat then **Add Payment for Invoice** in fastbill - When **New or Updated Custom Field** in Manychat 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 Manychat and fastbill ## Triggers and actions 1 trigger · 30 actions - Trigger **New or Updated Custom Field** Triggers when a subscriber custom field is created on the Manychat page, or an existing one's name, type or description changes. - Action **Add custom field** Creates a new subscriber custom field on your Manychat page, with the name, data type and description you choose. - Action **Add tag** Creates a new tag on your Manychat page. - Action **Create Subscriber** Creates a new Manychat subscriber (contact) from a name plus an email, phone or WhatsApp number, and returns the created subscriber. - Action **Delete tag** Deletes a tag from your Manychat page and removes it from every subscriber that has it. This cannot be undone. - Action **Find User by Name** Returns up to 100 subscribers whose full name matches the name you specify. - Action **Get page info** Returns details of the connected Manychat page: its id, name, category, avatar, username, about text, description, Pro status and timezone. - Action **List custom fields** Returns every subscriber custom field defined on the Manychat page, with each field's id, name, type and description. - Action **List flows** Returns all automations (flows) on the connected Manychat page, along with the folders they are organized in. - Action **List tags** Returns every tag defined on your Manychat page, with each tag's id and name. - Action **Send flow** Sends one of your Manychat automations (flows) to a subscriber. - Action **Set bot field** Sets the value of a Manychat bot field (an account-wide field shared by all subscribers). - Action **Set Custom Field** Sets the value of one custom user field on a Manychat subscriber. - 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 - [ **Manychat** Manychat is an all-in-one Messenger Marketing platform.](https://apiant.ai/connections/manychat) - [ **fastbill** FastBill is a cloud app for German invoicing & accounting.](https://apiant.ai/connections/fastbill) Reviews ## What our customers say ## More from Manychat - [ **Manychat to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/manychat-to-salesforce) - [ **Manychat to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/manychat-to-slack) - [ **Manychat to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/manychat-to-stripe) - [ **Manychat to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/manychat-to-shopify) - [ **Manychat to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/manychat-to-quickbooks-online) - [ **Manychat to Pipedrive** Pipedrive is a sales CRM and pipeline management tool.](https://apiant.ai/connect/manychat-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 ## Manychat and fastbill, answered ### ### What can start an automation from Manychat? Any of Manychat's 1 trigger in the catalog, including New or Updated Custom Field. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in fastbill when something happens in Manychat? 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 Manychat? fastbill has no triggers in the catalog today, so automations start in Manychat. 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 Manychat 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 Manychat 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.