canonical: https://jentic.com/apis/sleekflow.io/sleekflow

# SleekFlow API

SleekFlow is a messaging platform that enables businesses to communicate with customers across multiple channels including WhatsApp, Facebook Messenger, SMS, WeChat, LINE, and web chat. The API allows you to send messages, manage contacts, and automate customer communication workflows. The API exposes 5 endpoints secured with apiKey authentication.

## For AI agents

Programmatically authenticate user, send message. Covers 5 operations with apiKey authentication.

## Scope

Does not handle payments, crm, or developer tools - use for communications only.

## Capabilities

- Authenticate user
- Send message
- Create new contact
- Get contact
- Update existing contact

## Use cases

### Communications Operations

Use the SleekFlow API to perform communications operations programmatically. The API provides 5 endpoints covering core functionality including authenticate user, send message, create new contact.

Example prompt: Call GET `/api/zapier/me` to authenticate user

### Automated Authentication Management

Automate authentication operations by combining multiple SleekFlow API endpoints. Agents can send message and then create new contact in a single workflow.

Example prompt: Call POST `/api/zapier/message/send` to send message, then verify the result

### AI Agent Integration via Jentic

AI agents discover and call SleekFlow API endpoints through Jentic without managing credentials directly. An agent searches for the required operation by intent, receives the matching endpoint schema, and executes the call with Jentic-managed authentication. This eliminates the need to read API documentation or handle apiKey tokens manually.

Example prompt: Search Jentic for 'authenticate user', load the operation schema, and execute with Jentic-managed credentials

## Key endpoints

| Method | Path | Description |
| --- | --- | --- |
| GET | `/api/zapier/me` | Authenticate user |
| POST | `/api/zapier/message/send` | Send message |
| POST | `/api/zapier/contact/add` | Create new contact |
| GET | `/api/zapier/contact` | Get contact |
| GET | `/api/zapier/contact/update` | Update existing contact |

## Key resources

- **Authentication** — Authentication endpoints for verifying API credentials
- **Messages** — Endpoints for sending messages across multiple channels
- **Contacts** — Endpoints for managing contacts

## Why Jentic

- **Setup:** Wiring the SleekFlow API by hand means passing your apikey as a query parameter to api.sleekflow.io and handling the contact and message send calls yourself. Through Jentic you install once, import SleekFlow from the API Directory, store the API key once, and your agent calls it.
- **Permission scoping:** SleekFlow passes its targets in the request body and query rather than a resource id in the path, so limit the agent to the operations it needs, such as sending a message or adding a contact. Other operations like updating contacts are not included unless you add them to the allowed set.
- **Credential handling:** Your SleekFlow API key is stored once, encrypted, by your own Jentic One instance and injected at execution time. It never enters the agent's prompt, logs, or context.
- **Discovery method:** Agents search Jentic by intent such as 'send a message' or 'add a contact', and Jentic returns the matching SleekFlow operation with its input schema so the agent calls the right endpoint without browsing the reference docs.

## Related APIs

- **Twilio** — Alternative communications API
- **Sendgrid** — Alternative communications API
- **Pusher** — Complementary communications API

## FAQ

### What authentication does the SleekFlow API use?

The SleekFlow API uses an API key passed in the `apikey` query. Through Jentic, these credentials are stored encrypted in your Jentic One instance and injected at execution time, so raw secrets never enter the agent context.

### Can I authenticate user with the SleekFlow API?

Yes. Use the GET `/api/zapier/me` endpoint. The API returns structured JSON responses that agents can parse and act on directly.

### What are the rate limits for the SleekFlow API?

Rate limits are not specified in the OpenAPI spec. Check the vendor documentation for current limits. Through Jentic, rate limiting is handled automatically with retry logic built into the execution layer.

### How do I authenticate user through Jentic?

Install the Jentic SDK with pip install jentic, authenticate through Jentic One, the self-hosted execution layer, then search for 'authenticate user'. Jentic returns the matching SleekFlow API operation with its input schema. Load the schema and execute the call - credentials are injected automatically.

### How many endpoints does the SleekFlow API have?

The SleekFlow API exposes 5 endpoints covering authentication, messages, contacts operations.

### Can I limit what my agent is allowed to do with the SleekFlow API?

Yes. Because you run Jentic One yourself, your own rules decide which SleekFlow operations and credentials the agent may use. Since SleekFlow passes its targets in the request body and query rather than as a path id, you scope the agent to only the operations it needs, such as sending a message or adding a contact. Operations like updating a contact stay unavailable to the agent unless you add them to the allowed set.