Project comparison

Harness Sdk vs ECC

Compare adoption, momentum, maintenance health, and project basics before choosing which tool to evaluate deeper.

Build an agent harness and control it end-to-end. Open-source SDK for production AI agents in Python & TypeScript - any model, any cloud.

Best matched with other agent tools.

6.7K

Stars

Weekly

63/100

Health

ECC

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

Best matched with other agent tools.

232.2K

Stars

+52.6K

Weekly

95/100

Health

Quick Take

Adoption

ECC has the larger GitHub footprint with 232.2K stars.

Momentum

ECC is currently growing faster at +52.6K stars this week.

Maintenance

ECC has the stronger automated maintenance signal at 95/100. This is not a security or fit verdict.

Side-by-side evidence

Use these signals to narrow your choice, then confirm setup, license, and fit upstream.

Signal	Harness Sdk	ECC
Evidence status	Basic listing· 14h ago	Recently verified· 12h ago
GitHub stars	6.7K	232.2K
Weekly growth	0	+52.6K
Health score	Healthy63/100

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