160 Projects Does Not Mean 160 Runtime Harnesses

The upstream catalog mixes ready-to-run coding agents with SDKs, frameworks, memory systems, sandboxes, evaluation tools, observability products, prompt libraries, and multi-agent control planes. Treating all 160 as interchangeable runtimes produces invalid comparisons. The strict map retains projects with evidence that they own an agent loop; adjacent products remain in the directory under their actual job.

The 160-project and 12-category figures come from Best of Agent Harnesses, snapshot 2026-08-23. Catalog size is not runtime count.