Why We Added {$self} to ACL Rules

How ACL v2's identity-bound topic patterns kill per-user rule explosion, what we found about wildcard SUBACK along the way, and what v2.2 added on top.

6. Mai 2026 4 Min. Lesezeit

Developer Experience

Shipping the CloudSignal CLI: PKCE Auth, ACLs, and Identity Claims

Why we chose a CLI over an SDK, how browser-based login works, and how policy and identity claims now flow from your terminal.

15. Apr. 2026 3 Min. Lesezeit

AI Chat

AI Chat Drop-In for No-Code Builders: What We Shipped and Why

How we built a drop-in for the Vercel AI SDK that gives AI chat offline recovery and multi-device sync, in one config change.

12. März 2026 5 Min. Lesezeit

AI Chat

Presence and Typing Indicators for AI Chat Sessions

The little signals that make AI chat feel responsive: who is here, what the model is doing, and how to render that without races.

25. Feb. 2026 6 Min. Lesezeit

Security

The Security Defaults We Chose for MQTT

TLS-only listeners, deny-by-default ACLs, and per-org mountpoints. What we picked and why.

12. Feb. 2026 6 Min. Lesezeit

Collaboration

The Three Primitives Every Collaboration App Needs

Presence, ordered message delivery, and per-document access control. Everything else is product polish.

3. Feb. 2026 6 Min. Lesezeit

Push Notifications

Web Push Without Firebase

We added VAPID-based web push so apps can reach users when the tab is closed, without taking a dependency on FCM.

21. Jan. 2026 6 Min. Lesezeit

Auth

Auth Without the JWT Headache

How short-lived MQTT credentials remove the rotation, revocation, and refresh problems baked into long-lived JWTs.

14. Jan. 2026 6 Min. Lesezeit

Tutorial

Building a Multi-Agent System with CloudSignal: A Practical Guide

Learn how to connect AI agents using MQTT pub/sub messaging. We'll build a three-agent pipeline that handles research, summarization, and notifications.

7. Jan. 2026 6 Min. Lesezeit

AI Agents

Why Multi-Agent AI Systems Keep Failing (And How to Fix It)

43% of product teams report inter-agent communication as their biggest latency bottleneck. Here's why multi-agent systems fail, and the architectural pattern that solves it.

30. Dez. 2025 5 Min. Lesezeit

Notifications

Notifications the Broker Handles, So Your App Doesn't

How we replaced polling and SSE plumbing with a topic-per-user pattern that scales without code.

15. Dez. 2025 6 Min. Lesezeit

REST API

A REST API for Teams That Don't Want to Hold an MQTT Socket

Why we ship a REST publish endpoint alongside MQTT, and when each one is the right tool.

2. Dez. 2025 6 Min. Lesezeit

Presence

Building Presence That Actually Works

Why naive presence drifts within minutes, and how MQTT's last-will primitive fixes it for free.

18. Nov. 2025 6 Min. Lesezeit

MQTT

Pub/Sub Without the Yak Shaving

What it took to make MQTT pub/sub feel like a managed primitive, not a broker you babysit.

4. Nov. 2025 6 Min. Lesezeit