Show HN: Hlock – an agent harness lockfile and performance resolver

Category: ai-ml

Tags: agent-harness, lockfile, reproducibility, ai-agents, eval-framework, rust

Score: 7.0/10 (Innovation: 7, Technical: 7, Documentation: 8, Utility: 6)

hlock is a lockfile and performance resolver for AI agent harnesses, pinning models, MCP servers, skills, and config into a portable harness.lock that can be versioned and rehydrated anywhere. It also benchmarks and optimizes your agent stack against eval packs to find the best combination of success rate, cost, and latency. The project stands out by treating agent setups as reproducible dependencies, similar to package managers but for the entire agent harness.

Target audience: AI engineers, devops, and developers building and deploying AI agents

Repository: https://github.com/unionai-oss/hlock · Rust · Apache-2.0 · 6 stars

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