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Dynobox

Cross-harness testing for multi-step agent flows

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articleX11 Aug 2026

Over engineering a pipeline to email me about strangers’ skills for dynobox

For the past few weeks I've been building Dynobox - a local test runner that records what an agent does inside a harness (Claude Code, Codex, OpenCode etc.) and lets you write deterministic assertions against its non-deterministic behavior: tool calls, shell commands, files created or changed and so on.

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