--- title: "Connect Buttondown to BrasilAPI - APIANT.ai" description: "When \"New Draft\" fires in Buttondown, your agent runs \"Get address by CEP\" in BrasilAPI." canonical: "https://apiant.ai/connect/buttondown-to-brasilapi" --- # Connect Buttondown to BrasilAPI When **New Draft** fires in [Buttondown](https://apiant.ai/connections/buttondown), your agent runs **Get address by CEP** in [BrasilAPI](https://apiant.ai/connections/brasilapi). Describe the whole flow and it is built, tested on every scenario and kept running. Buttondown **4** triggers Buttondown **29** actions BrasilAPI **20** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Buttondown and BrasilAPI 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 Buttondown can start in BrasilAPI - When **New Draft** in Buttondown then **Get address by CEP** in BrasilAPI - When **New Scheduled Email** in Buttondown then **Get area code info** in BrasilAPI 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 Buttondown and BrasilAPI ## Triggers and actions 4 triggers · 49 actions - Trigger **New Draft** Triggers when a new draft is created. - Trigger **New Scheduled Email** Triggers when a new email is scheduled. - Trigger **Newsletters** Triggers when a new newsletter is created. - Trigger **New Tag** Triggers when a new tag is created. - Action **Add Segment** Create a new subscriber segment. - Action **Add Survey** Create a new survey. - Action **Create Draft** Creates a draft. - Action **Create Email** Creates an email. - Action **Create Subscriber** Creates a subscriber. - Action **Delete Automation** Delete an automation by id. - Action **Delete Email** Delete an email by id. - Action **Delete Newsletter** Delete a newsletter by id. - Action **Delete Segment** Delete a subscriber segment by id. - Action **Delete Subscriber** Remove a subscriber by id or email address. - Action **Delete Survey** Delete a survey by id. - Action **Delete Tag** Delete a tag by id. - Action **Find Tag** Finds a tag given its name. - Action **Get Automation** Retrieve a single automation by id. - Action **Get Email** Retrieve a single email by id. - Action **Get Newsletter** Retrieve a single newsletter by id. - Action **Get Segment** Retrieve a single subscriber segment by id. - Action **Get Survey** Retrieve a single survey by id. - Action **Get Tag** Retrieve a single tag by id. - Action **List Automations** List all automations configured on the account. - Action **List Segments** List all subscriber segments. - Action **List Surveys** List all surveys on the account. - Action **Publish Email** Publish a drafted email so it is sent and made public. - Action **Update Automation** Update an automation's configuration. - Action **Update Email** Update an existing email's content or metadata. - Action **Update Newsletter** Update a newsletter's settings. - Action **Update Segment** Update a subscriber segment's definition. - Action **Update Survey** Update a survey's configuration. - Action **Update Tag** Update a tag's name or metadata. - Action **Get address by CEP** Look up a Brazilian postal code (CEP) and return the matching street, neighborhood, city, and state. - Action **Get area code info** Look up a Brazilian telephone area code (DDD) and return its state and covered cities. - Action **Get bank by code** Look up a single Brazilian bank's details by its Central Bank code. - Action **Get book info by ISBN** Look up a book's title, author, and publisher information by its ISBN. - Action **Get company info by CNPJ** Look up complete Brazilian company registration data (status, address, partners, activities) from the Receita Federal by CNPJ number. - Action **Get domain registration info** Look up a.br domain's registration status and expiration date from Registro.br. - Action **Get exchange rate** Get the Central Bank's official exchange rate (buy/sell) for a given currency on a given date. - Action **Get interest rate by index** Get the current value of a Brazilian reference interest/inflation rate (e.g. SELIC, CDI) by its acronym. - Action **Get investment fund info by CNPJ** Look up an investment fund registered with the CVM (securities regulator) by its CNPJ. - Action **Get national holidays by year** List Brazil's national public holidays for a given year. - Action **Get NCM info by code** Look up a Mercosur Common Nomenclature (NCM) tax classification code and return its description. - Action **Get TUSS procedure code info** Look up a TUSS (Unified Terminology for Health Supplies) procedure or item code and return its description. - Action **Get weather forecast by city code** Get the multi-day weather forecast for a Brazilian city from CPTEC by its city code. - Action **List B3 stocks** List publicly traded stock tickers on Brazil's B3 stock exchange. - Action **List banks** List all Brazilian banks registered with the Central Bank, with their codes and names. - Action **List Brazilian states** List Brazil's states (UFs) with their codes and regions, per IBGE. - Action **List currencies** List the foreign currencies available for exchange rate lookups. - Action **List hospitals** List public hospitals registered in Brazil's national health facility registry (CNES). - Action **List municipalities by state** List all municipalities (cities) within a Brazilian state, per IBGE. - Action **List PIX participants** List the financial institutions participating in Brazil's PIX instant payment system. ## Each app on its own - [ **Buttondown** Buttondown is an easy way to start and grow your newsletter.](https://apiant.ai/connections/buttondown) - [ **BrasilAPI** Community-driven open API for Brazilian public data.](https://apiant.ai/connections/brasilapi) Reviews ## What our customers say ## More from Buttondown - [ **Buttondown to HelloSalut** HelloSalut returns the word for "hello" in a visitor's own language.](https://apiant.ai/connect/buttondown-to-hellosalut) - [ **Buttondown to Zoho Campaigns** Zoho Campaigns lets you send email and social media campaigns to your subscribers.](https://apiant.ai/connect/buttondown-to-zoho-campaigns) - [ **Buttondown to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/buttondown-to-hubspot) - [ **Buttondown to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/buttondown-to-salesforce) - [ **Buttondown to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/buttondown-to-slack) - [ **Buttondown to Google Sheets** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/buttondown-to-google-sheets) ## More into BrasilAPI - [ **HubSpot to BrasilAPI** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-brasilapi) - [ **Salesforce to BrasilAPI** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-brasilapi) - [ **Slack to BrasilAPI** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-brasilapi) - [ **Google Sheets to BrasilAPI** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-brasilapi) - [ **Gmail to BrasilAPI** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-brasilapi) - [ **Google Calendar to BrasilAPI** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-brasilapi) Questions ## Buttondown and BrasilAPI, answered ### ### What can start an automation from Buttondown? Any of Buttondown's 4 triggers in the catalog, including New Draft, New Scheduled Email, New Tag and Newsletters. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in BrasilAPI when something happens in Buttondown? Any of BrasilAPI's 20 actions, including Get address by CEP, Get area code info, Get bank by code and Get book info by ISBN. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from BrasilAPI to Buttondown? BrasilAPI has no triggers in the catalog today, so automations start in Buttondown. If you need the other direction, ask: your agent reads BrasilAPI's API documentation and adds it. ### ### Do I have to build a connector for Buttondown or BrasilAPI? 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 Buttondown and BrasilAPI 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.