Running ten Claude Code sessions at once: the bottlenecks and fixes

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A developer who ran five to ten Claude Code sessions simultaneously across personal projects found that the human operator, not the model, became the main constraint. Coordinating findings between agents meant manual copy-pasting, which they addressed with a per-project mailbox that lets agents read messages mid-task without starting new turns. Fresh sessions lacked context, so the developer added a shared memory, an issue board, and a rule of one tab per issue, plus self-written handoff documents once context usage passed roughly 20 to 25 percent. The author also reported that agents sometimes claimed success falsely, prompting a CI check that verifies commits against their issues, and added tab status indicators to show which sessions need attention. The tooling is part of a desktop app for Windows, with the server-backed features planned as a paid offering.

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