SkillSeek: Revisiting Agent Skill Retrieval at Marketplace Scale
SkillSeek shows standard retrieval matches LLM-mediated agent skill selection at about half the cost.
SkillSeek is an open-source two-stage retriever for Anthropic-style agent skills, pairing a BGE-base bi-encoder with a small cross-encoder exposed over MCP. Open aggregations now exceed 230,000 skills. Across an 89-task SkillsBench grid under OpenHands, it reached parity with an LLM-mediated retrieval loop, and BM25 alone matched or beat that loop on three of four settings. Per-trial cost fell from USD 51.30 to USD 27.54.
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