# API Rails
> One connector platform for 1,000+ connectors — every call through one Bearer key.

Every connector has a full machine-readable endpoint reference — paths, parameters, request bodies — served at `https://api.apirails.com/{connector}/openapi` (narrow large specs with `?category=`, `?paths=`, `?keys=`). The curated sections below are live highlights; every available connector is in the [connector catalog](https://api.apirails.com/connectors).

All requests use one auth pattern — setup details, key signup, and error semantics in the [platform skill manual](https://api.apirails.com/skill.md):

```
curl -H "Authorization: Bearer $API_RAILS_KEY" \
  "https://api.apirails.com/{connector}{endpoint_path}"
```

## Essentials

- [Connector catalog](https://api.apirails.com/connectors): JSON list of every available connector, no auth required
- [Platform skill manual](https://api.apirails.com/skill.md): setup, auth, request pattern, connector state checks, error handling
- [Get a key](https://api.apirails.com/skill.md?email=<user-email>): replace `<user-email>` with the owner's email — a setup link arrives by email

## Connector OpenAPI specs

- [Stripe API via API Rails](https://api.apirails.com/stripe/openapi): payment processing — charges, customers, refunds
- [Google Sheets API via API Rails](https://api.apirails.com/googlesheets/openapi): spreadsheets — read/write ranges, formatting
- [OpenAI API via API Rails](https://api.apirails.com/openai/openapi): models, chat, embeddings, vector stores
- [Mailgun API via API Rails](https://api.apirails.com/mailgun/openapi): transactional email — send, domains, templates

## Email & messaging

- [mailgun](https://api.apirails.com/mailgun/openapi): transactional email — send, domains, templates
- [awsses](https://api.apirails.com/awsses/openapi): AWS email sending
- [resend](https://api.apirails.com/resend/openapi): transactional email
- [gmail](https://api.apirails.com/gmail/openapi): Google Gmail — messages, threads, labels
- [telegram](https://api.apirails.com/telegram/openapi): bot messaging — send messages, manage chats

## AI providers

- [anthropic](https://api.apirails.com/anthropic/openapi): Claude models
- [openai](https://api.apirails.com/openai/openapi): GPT models, chat, embeddings
- [mistralai](https://api.apirails.com/mistralai/openapi): open-weight models
- [minimax](https://api.apirails.com/minimax/openapi): LLM APIs
- [zai](https://api.apirails.com/zai/openapi): LLM APIs
- [sarvam](https://api.apirails.com/sarvam/openapi): Indian-language LLMs
- [nvidia](https://api.apirails.com/nvidia/openapi): hosted AI models

## Productivity & storage

- [googledocs](https://api.apirails.com/googledocs/openapi): Google Docs — create and edit documents
- [googlesheets](https://api.apirails.com/googlesheets/openapi): spreadsheets — read/write ranges, formatting
- [googledrive](https://api.apirails.com/googledrive/openapi): Google Drive — files and folders
- [notion](https://api.apirails.com/notion/openapi): pages, databases, blocks
- [trello](https://api.apirails.com/trello/openapi): boards, lists, cards

## Payments

- [stripe](https://api.apirails.com/stripe/openapi): payment processing — charges, customers, refunds
- [razorpay](https://api.apirails.com/razorpay/openapi): payment processing