Keystone
configure Dockerfiles and dev containers for any repo
Details
- External ID
- 47064521
- Source
- HN
- Company
- —
- Product
- Keystone
- Website domain
- github.com
- Launched
- Feb. 18, 2026
- Cohort
- —
- Upvotes
- 12
- Upvotes percentile
- 0.5970350404312669
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
We kept hitting the same wall: you clone some arbitrary repo and just want it to run without any configuration work. So we built Keystone, an open source tool that spins up a Modal sandbox, runs Claude Code inside it, and produces a working .devcontainer/ config (Dockerfile, devcontainer.json, test runner) for any git repo.We build on the dev container standard, so the output works with VS Code and GitHub Codespaces out of the box.Main use cases: reproducible dev/CI environments, self-describing repos, and safely sandboxed coding agents.Our goal is to encourage all repos to self-describe their runtime environment.Why the sandbox? Running Claude directly against your Docker daemon is risky. We've watched it clear Docker config and tweak kernel settings when iterating on containers. Containerization matters most when your agent is acting like a sysadmin.To use it: get a Modal account and an Anthropic API key, run Keystone on your repo, check in the .devcontainer/ directory. See the project README for more details.
Enrichment
- Theme
- Claude integrations and coding agents
- Vertical
- —
- Function
- Dev tools
- Audience
- Developer
- AI stance
- AI feature
- Project type
- Commercial product
- Normalized one-liner
- dockerfile and dev container configurator
- Manually corrected
- False
Could you build this?
Yes Keystone coordinates a cloud sandbox (Modal) to run an LLM CLI agent that inspects files and writes standard devcontainer configuration files.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one — 202 launches clear the similarity bar, closest 8 shown.
Attention rank: #95 of 203 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 109 days after the earliest competitor.
- Keystone · hn · 2026-03-25 · 5 upvotes · similarity 0.83
- RepoDoctor · ph · 2026-09-18 · 1 upvotes · similarity 0.51
- Minimal container-like sandbox built from scratch in C · hn · 2025-12-07 · 5 upvotes · similarity 0.51
- Nucleus · hn · 2026-06-09 · 40 upvotes · similarity 0.51
- Coasts · hn · 2026-03-30 · 99 upvotes · similarity 0.48
- Run LLMs in Docker for any language without prebuilding containers · hn · 2026-01-14 · 26 upvotes · similarity 0.47
- podup · ph · 2026-09-07 · 1 upvotes · similarity 0.46
- BuildPeek · ph · 2026-09-18 · 1 upvotes · similarity 0.44
Other launches for this product
- No other launches for this product.