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Show HN: Telize – YAML workflows for shell, Python, and LLM steps

Telize, a terminal-first YAML runner for chaining shell, Python, file I/O, and LLM steps, has been released as an open-source alpha (version 0.4.0) under Apache 2.0. Unlike agent frameworks such as LangChain or CrewAI, Telize keeps control flow explicit in YAML and supports dry-run validation with `--validate-only`, working locally with Ollama without requiring an API key. The tool is designed for pipelines where steps are known in advance, not for autonomous agent planning.

read1 min views1 publishedJul 22, 2026

I kept hitting this challenge: a ChatGPT demo which works in an afternoon, but turning it into something I’d trust on a cron job takes weeks.

My path was notebook > Python script > LangChain > back to bash and curl against Ollama. The model wasn’t the problem, the glue was — piping step A into step B, catching config errors before a batch run burns API credits, and explaining the pipeline to someone else without a 30-minute call or meet.

Telize is what I ended up building: it is a terminal-first YAML runner that chains shell, Python, file I/O, LLM (and others) steps. Like GitHub Actions or Ansible, but with an LLM as one step (or multiple steps) in the pipeline — not an autonomous agent deciding what to do next.

What’s different from agent frameworks (LangChain, CrewAI, etc.): the control flow is explicit in YAML, you can dry-run in CI with --validate-only. Local-first — works with Ollama out of the box, no API key required for the shell-only examples. Can work with frontier models as well.

Try it without signing up: pip install telize telize --init my_flow # works immediately, no LLM needed telize -f my_flow.yaml

It’s alpha (0.4.0), Apache 2.0. Not for open-ended “agent figures out the plan” work — it’s for pipelines where you already know the steps and want the boring parts to stay boring.

Happy to answer questions about the design, what I deliberately left out, and where it breaks down.

Comments URL: [https://news.ycombinator.com/item?id=49004112](https://news.ycombinator.com/item?id=49004112)

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