Harness Lens catalogs 17 open-source agent harnesses with system prompts and compaction methods
yb2698 · x · 2026-10-21
The author released Harness Lens, a resource collecting 17 open-source agent harnesses, a registry of existing tools, and the system prompts and context-compaction methods used by each, expanded in a thread.
For anyone building coding agents or studying how different agent frameworks engineer their prompts and compaction, this is a rare side-by-side reference.
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