Launch HN: Runtime (YC P26) – Sandboxed coding agents for everyone on a team

1 sources1 storiesFirst seen 5/21/2026Score31Mixed Progress

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Launch HN: Runtime (YC P26) – Sandboxed coding agents for everyone on a team.

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We're building infra that lets your whole team (including non-engineers) ship with Claude Code, Codex, and other agents without engineering having to handhold every session.After Mentum (YC S21) was acquired, I personally shipped 4 full-stack products in 3 months using coding agents.

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When I tried to roll the same workflow out to the rest of the team, it fell apart: Most PRs were unmergeable slop - Every repo required an engineer doing one-off local setup.

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- There was no safe way for a PM to touch a real codebase without risking a bad deploy or a secrets leak.Carlos comes from building agentic reconciliation systems at Modern Treasury and had a similar experience when letting his support team use devin.We ended up building internal background agent infra but it quickly became a nightmare to mantain and develop.

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We built Runtime so you don't have to do this kind of...

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