Connect · Automate · Secure

Connect anything.
Automate everything.
Secure what flows through.

Wire up devices and APIs, build visual workflows with AI, and scan every file upload for threats, all in one platform. Real products ship in minutes, not months.

Coming soon Read the docs
Python
from tendrl import Client

client = Client()
client.start()
client.publish({"temp": 22.4, "humidity": 61})
# validated, routed, and stored.
4 SDKsPython, Go, JS, MicroPython
5 min setupFirst data in minutes
Visual workflowsDrag-and-drop automation
On-device MLPrebuilt vision models
Free tierNo credit card required
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The problem

You shouldn't need 5 services to send a sensor reading to Slack

Most projects stall at the integration layer. You end up managing brokers, writing webhook handlers, and debugging silent failures instead of building your actual product.

Doing it yourself With Tendrl
Connecting devices Set up an MQTT broker, manage certs Install SDK, call .publish()
Data quality Write validation in every service Declare rules once, enforced at ingress
Integrations Glue code for each API Drag connectors into a workflow
When things break Check 4 dashboards, grep logs One trace shows the full picture
Adding AI Another service, another API key Drop an AI node into your workflow

Three layers. One platform.

Connect. Automate. Protect.

Contact handles connectivity and data. Strand handles what happens next. Surface handles what could go wrong.

Contact

Contact: your connectivity and data layer

Register devices, send data over MQTT or REST, and enforce validation rules before anything hits your system.

  • Flash and provision a bare ESP32 from a browser tab, no toolchain needed
  • OpenMV cameras with prebuilt detection models: tune, don't train
  • 15+ validation rules enforced at ingress
  • SDKs for Python, Go, JavaScript, and MicroPython
Strand

Strand: your automation layer

Build workflows visually: connect triggers to actions with logic, AI, and cloud connectors. No code required.

  • Drag-and-drop editor with branching, loops, and AI nodes
  • 30+ connectors: Slack, S3, Kafka, Redis, and more
  • Human approval gates and full execution traces
Surface

Surface: your security layer

Send a file, get a verdict. ML-driven detection catches what signatures miss, without a security team or a signature database.

  • ML models + live threat feeds: verdict in the scan response
  • Payload scanning for AI agents: stop prompt injection at the gate
  • REST API, MCP server, and drop-in embeddable widget

No toolchain required

Flash a bare microcontroller from a browser tab

Plug an ESP32 into USB and open the Device tab. Tendrl flashes MicroPython, writes the Wi-Fi and API key, installs the SDK, and hands you a live terminal and file editor, with no esptool, no drivers, no serial monitor, and nothing to install.

  • Flash MicroPython from the live build list, or your own .bin
  • Auto-detect the board and size the install to its free heap
  • Edit and run files on the device with output streaming back live
  • Preview an OpenMV camera and tune a detector by eye, then export it

It runs on WebSerial, so it is genuinely local: your API key and Wi-Fi password travel from the form down the USB cable, never through our servers.

See the device workbench
Flashing MicroPython onto an ESP32 from the browser
Device Tab

Flash, provision, edit files, run scripts, and preview the camera, all from a browser tab

See it in action

Built for builders

The Device tab: connection, provisioning, terminal, files, and camera
Device tab screenshot

Flash a board, provision it, edit files, and run scripts from a browser tab

Tuning an on-device detector in the vision playground
Vision playground screenshot

Prebuilt detectors running on the board: tune by eye, then export the deployable file

Strand visual workflow editor
Strand workflow editor screenshot

Drag-and-drop nodes, connect triggers to actions, add branching and AI

Strand workflow run history
Run history screenshot

Full execution traces, step-by-step debugging, performance metrics

Developer experience

Pick your language, start shipping data

Connect over MQTT or REST. Every SDK handles connection management, batching, retries, and offline storage, so you write application logic, not infrastructure code. The complexity is abstracted. The performance isn't.

Python

Python

Ideal for Raspberry Pi, servers, and data pipelines. Auto-batching and SQLite offline cache.

uv add git+https://github.com/tendrl-inc-labs/python-sdk
Go

Go

For high-throughput services. Thread-safe with BoltDB persistence and auto heartbeats.

go get github.com/tendrl-inc-labs/go-sdk
JavaScript

JavaScript

Browser and Node.js. React hooks, IndexedDB offline storage, and batching built in.

npm install github:tendrl-inc-labs/js-sdk
MicroPython

MicroPython

Built for ESP32, Pico W, and OpenMV cameras. MQTT over TLS, JPEG streaming, and on-device vision.

mpremote mip install https://app.tendrl.com/api/public/sdk/v1/latest/mpy/package.json
AI in every workflow

Classify, summarize, or generate, with memory and tool use

MCP, both ways

Give AI nodes tools via MCP, and plug Contact, Strand & Surface into any LLM to build faster

Intelligence layer

Add AI without another service

Drop an AI node into any workflow. It gets conversation memory, configurable temperature, and automatic retries. Or expose your entire platform to AI assistants via MCP.

  • OpenAI, Claude, and Gemini: pick per step
  • MCP servers for Contact, Strand, and Surface: manage devices, trigger workflows, scan data
  • Built-in AI skills: connect an MCP client and get guided workflows automatically
  • Token tracking and cost controls built in
  • Works with Cursor, Claude Desktop, and any MCP client
  • Works with any MQTT client, so your existing fleet can talk to AI without our SDKs

What people build with Tendrl

Production-ready from the start

Simple enough to start in minutes. Engineered to run in production. Security, performance, and observability are built into every layer, not bolted on after.

Free tier forever Deploy in 5 minutes End-to-end encryption Fast file scanning built in Full execution traces Offline-resilient SDKs

Get started

Idea to production in five steps

Sign up

Create an account and your first project

Connect

Install an SDK or send data via REST

Validate

Add rules so only clean data gets through

Automate

Build a workflow with triggers and actions

Ship

Go live, monitor, and iterate

Your next project shouldn't take months.

Free tier includes 5 entities, 10 workflows, and 550 monthly runs. No credit card. No sales call. Just start building.

Coming soon Read the docs