# taoensso/sente

Realtime web comms library for Clojure/Script

Repository: https://github.com/taoensso/sente
Canonical: https://ross.abutalabs.com/products/sente
Homepage: https://www.taoensso.com/sente
Language: Clojure
License: NOASSERTION
License Family: other
Topics: clojure, clojurescript, epl, taoensso, websockets, http-kit, ajax, async, edn, transit
Last push: 2026-08-21T05:13:50+00:00

## Health v2 (maintenance only)
Score: 85/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 59, longevity 100
- inputs: {"age_days": 4576, "days_push": 12, "days_rel": 62, "gap_med": 273.5, "n_releases_24m": 3}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1791, forks 194 (observed 2026-08-28T04:05:37.062281+00:00)

## What it is
Sente is a client+server realtime web communications library for Clojure and ClojureScript, inspired by Socket.IO. It provides a unified high-level API over WebSockets with automatic Ajax fallback, built on core.async for reliable bidirectional messaging and server push.

## Use cases
- build realtime chat applications in Clojure/ClojureScript
- push server events to connected browsers
- bidirectional client-server messaging with ack/reply support
- track which users are connected and over which protocols
- send arbitrary Clojure data structures over the wire
- add realtime updates to a Ring-based web app
- support users connected from multiple devices simultaneously

## When to choose
- you're building a full-stack Clojure/ClojureScript web app needing realtime comms
- you want WebSockets with automatic Ajax fallback and reconnect handling
- you prefer a small unified API over raw WebSocket management
- you want to send Clojure data with efficient binary serialization
- you need Ring-compatible security, auth, and CSRF integration

## When to avoid
- your stack is not Clojure/ClojureScript
- you only need simple one-way HTTP polling without realtime push
- you need a language-agnostic protocol like plain WebSockets or gRPC shared with non-Clojure clients
- you want a batteries-included realtime backend service rather than a library

## Facets
- artifact type: library
- maturity: active
- function: websocket, http-client, serialization, middleware
- domain: web-development, backend, frontend
- platform: jvm-scripting, jvm, browser
- tags: core-async, ajax-fallback, socket-io-inspired, ring, transit, edn, bidirectional-comms, server-push, real-time, clojurescript, nodejs, web-server

## Member repositories
- taoensso/sente (main) score 85

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:37.062281+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:23:07.344252+00:00, confidence not recorded.
  - readme: https://github.com/taoensso/sente (fetched 2026-08-28T04:05:37.062281+00:00, sha 5829d4835099)
  - homepage: https://www.taoensso.com/sente (fetched 2026-08-29T11:02:00.853220+00:00, sha bc487a5ee749)
- Data as of 2026-08-30T08:39:29.467469+00:00.