Blog
Updates, deep dives, and thinking from the 0xcircuitbreaker.
Replay as a primitive
Replay isn't a debugging feature. It's a composable primitive. Once you have it, eval becomes a replay, test becomes a replay, fuzz becomes a replay.
The missing layer beneath every agent framework
Every framework — LangChain, LlamaIndex, CrewAI, AutoGen — ships its own half-built run log. None of them interoperate. That's the layer we're replacing.
The terminal isn't a demo
The current beta's working interface is the CLI. That's not an afterthought; it's the shortest path between a run artifact and the project that produced it.
LangSmith is observability. opentine is state.
LangSmith, Langfuse, Helicone log what happened. opentine turns supported runs into local artifacts you can verify, fork, cache-replay, and sometimes resume.
Introducing opentine
I built opentine because every agent framework treats execution as ephemeral. Every run should be a first-class artifact you can fork, replay, and share.
Why I made run graphs content-addressed
Content addressing isn't just for git. When every step hashes its immutable payload, you get reusable graph prefixes, cache provenance, and integrity checks.
The forked_debug pattern
The most powerful pattern in opentine: when your agent fails, fork from the last good step, change the next attempt, and replay through the right runtime.