Takagi – Lightweight CoAP Framework for Ruby

About Takagi

Takagi is a Sinatra-like CoAP framework for IoT and microservices in Ruby.
It provides a lightweight way to build CoAP APIs, handle IoT messaging, and process sensor data efficiently.

🔹 Minimalistic DSL – Define CoAP endpoints just like in Sinatra.
🔹 Efficient and fast – Runs over UDP, ideal for IoT applications.
🔹 Database-ready – Seamless integration with Sequel for storing device data.

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Installation

Add this line to your application's Gemfile:

gem 'takagi'

Or install it manually:

gem install takagi

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Getting Started

Create a new Takagi API

require 'takagi'

class SensorAPI < Takagi::Base
  get "/sensor/:id" do |params|
    Sensor[params[:id].to_i].to_json
  end

  post "/sensor" do |params|
    Sensor.create(params).to_json
  end
end

Takagi.run!

🔥 Boom! You just built a CoAP API in Ruby.

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Sending Requests

Using coap-client

coap-client -m get coap://localhost:5683/sensor/1

coap-client -m post coap://localhost:5683/sensor -e '{"value":42}'

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Features & Modules

Feature	Description	Status
CoAP API	Define REST-like CoAP routes	✅ Ready
Sequel DB	Store IoT data in PostgreSQL, SQLite, etc.	✅ Ready
Notifications	Redis, HTTP, ZeroMQ messaging	🔄 WIP
Buffering	Store messages before processing	🔄 Planned
Compression	Reduce payload size	🔄 Planned

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Roadmap

✅ Core framework (CoAP, Sequel, notifications)
🔜 Web UI for data visualization
🔜 More integrations: NATS, MQTT...

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Contributing

Want to help? Fork the repo and submit a PR!

git clone https://github.com/domitea/takagi.git
cd takagi
bundle install

Run tests:

rspec

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License

MIT License

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