s2.dev

Durable streams with the paperwork to match. We are now SOC 2 Type II compliant, alongside HIPAA and GDPR. After 3 months of observation, an independent pentest, and a controls audit by Prescient Security with @Oneleet. Reports/BAA/DPA email: security@s2.dev

You can now use S2 as a backend for Mastra Durable Agents! The @ s2-dev/mastra-pubsub adapter maps each durable topic to an S2 stream, with live delivery, replay after refreshes or process restarts, and distributed leases for coordinating thread ownership across processes.

S2 source and sink plugins are now available for Streamling. Read durable S2 streams into Arrow batches, or write Streamling output back to S2. ClickHouse ingestion, Postgres CDC, and a full Postgres → S2 → ClickHouse example: s2.dev/docs/integr...

we just released opbox.dev, which is a fun way to bring real-time sync to directories of plain textfiles (markdown, code, what have you..) on disk youtube.com/watch?v=ewhP...

Seems like Local AI is getting more and more relevant, so I wrote about it! s2.dev/blog/local-ai

If you have wondered whether to use the s2.dev cloud service, or self-host s2-lite (github.com/s2-streamstore/s2) – s2.dev/docs/s2-lite...

turns out "stream per session" is not just for agents. it works for browser sessions too. built RePlaya, a self-hosted session replay tool where each visit is just an @s2.dev stream you can play back or tail live. recording = append playback = read live replay = tail github.com/s2-streamsto...

Streams as a cloud storage primitive, now in more places. S2 is the serverless API for unlimited, durable, real-time streams. Today, we're adding US West and EU North as new basin locations. s2.dev/blog/locatio...

You can plug @s2.dev into your anthropic sdk based chat app and make your chats durable!

oh and tanstack ai too!

@s2.dev now supports client-supplied encryption keys for durable streams. Bring your own per-request key, keep key material out of S2 storage and logs, and let S2 handle request-time encryption behind the stream API. s2.dev/blog/encrypt...

Make your aisdk chat app crash proof by using s2.dev as the persistence layer behind useChat!

new Dart SDK for @s2.dev from the community: pub.dev/packages/s2_...

Sorry folks, if you are going to video conference over a database, it better be a Stream Store. s2.dev/blog/video-c...

There's two new ways to manage S2 as code! The Terraform provider lets you manage resources with full lifecycle support. Available on the Terraform Registry at s2-streamstore/s2. Or you can use the CLI by `s2 apply` which takes a declarative JSON spec and creates/reconfigures specified resources.

The s2.dev dashboard now has a Data Plane studio to make it convenient to work with streams. You can: -Do one-shot reads, live tail from any stream, start from an offset, seq no., or timestamp -Append records in multiple modes -Run stream commands -Inspect records with command record aware rendering

The S2 cloud service is now GA! We also raised a $3.85M seed round led by Accel with participation from Y Combinator, and other funds and angels like @t3.gg @chris.blue @fulmicoton.bsky.social s2.dev/blog/ga

It was fun to run multi-agent research cohorts and have them connect over durable streams, making infinitely many reasoning topologies possible!

just got finished no-lifing on building a TUI for s2, wdyt?

s2-lite is here – an open source @s2.dev Stream Store! It's a single binary you can run anywhere. Powered by SlateDB, so you can point it at an object storage bucket for durable streams with real-time reads. github.com/s2-streamsto...

Thankful to the @s2.dev team for all the progress we made this year! Really excited for 2026. Some highlights 🧵

S2 is now SOC 2 Type II compliant! We are committed to continuously improving our security posture.

We are at SyncConf SF! Find us or DM if you wanna chat streams (or logs if you prefer!)

@s2.dev YC-launched today! www.ycombinator.com/launches/OnP...

👀 "This is the home of s2-lite — an open source, self-hostable implementation of the S2 API for durable streams. It will be backed by SlateDB, and it is currently in development."

just tried out the real-time TodoMVC example with @livestore.dev + @s2.dev as the durable sync provider, and honestly its crazy how fast it is! local SQLite, works offline, real-time updates and no complex setup, just works

a lil demo of serverless infra observability using S2 www.youtube.com/watch?v=wsFi...

S2's REST API now supports long polling, besides SSE! Long polling is a simple way for client-driven consumption with stateless HTTP requests. You just need to specify the ?wait=<seconds> query parameter. If no records are available, the response will only return after the duration elapses.

We open sourced a read-through cache for S3, called Cachey github.com/s2-streamsto...

OpenTelemetry 🤝 @s2.dev Are you building infrastructure for sandbox environments (e.g., agent sandbox, CI/CD sandbox) and want to stream execution logs to users in real time? If so, check out s2.dev/docs/integra... and let us know what you think.

Added some visibility into usage metrics to the @s2.dev dashboard!

s2.dev got a refresh ✨

Our Star Wars quickstart got good feedback, and now you can view the stream from the dashboard too 🫣 This comes in real handy for live debugging and observability — especially in systems built around agentic workflows, microservices, or event sourcing using @s2.dev

@s2.dev can now automatically delete streams where all records have fallen out of retention or it was never written to, based on a configurable time threshold. The option is called "delete-on-empty" and you can set it up on the default stream configuration for your basin from the dashboard or CLI!

Can you build a realtime BBS on s2? Yes, in fact... s2.dev/playground

Agents need granular streams. And yes, @s2.dev fits the bill nicely! s2.dev/blog/agent-s...

Super cool XTDB plugin from @chuck.cassel.dev, which implements the write-ahead log using @s2.dev streams: github.com/chucklehead-...

Change data capture from Postgres is simple with the right tools. We collaborated with sequinstream.com on an integration so you can use @s2.dev to ship real-time features faster!

Had a lot of fun with this 😄 – a multiplayer, "instant re-playable" pseudoterminal that uses @s2.dev streams as a transport instead of SSH: s2.dev/blog/s2-term

You can now safely share @s2.dev streams directly with end clients like browsers, apps, or agents! No proxying required. Check it out, s2.dev/blog/access-...

@s2.dev now has an MCP server! The entire API is available for tool-use by AI assistants like Claude -- see it in action here: www.youtube.com/watch?v=wLFk...