Blog
How engineering teams run agents on their tickets, and what we learn on the way.
Parallel Claude Code agents need more than a worktree
One worktree per agent is the standard advice. In Claude Code's sandbox, one agent can still delete another agent's unpushed commits.
Six traps in Claude Code's sandbox
Allowlists break on every repository. Claude Code's sandbox works, once you know six traps, from a writable .git to rules it silently ignores.
Writing code was never the hard part
AI agents write code. Tillerly runs everything around it, from the plan to the red build, in a sandbox built for each session, behind layers of protection.