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Mercury MCP v0.1.0 — Cross-Architecture LLM Internal Observation Database for 23 LLMs

Chen, Ho Yiing (norika) · 2026-05-23 · Zenodo

doi:10.5281/zenodo.20352085

Abstract

Mercury MCP is a Model Context Protocol server that exposes a 23-LLM cross-architecture observation database to any AI coding agent (Claude Code, Cursor, Cline, Goose). Built entirely on consumer hardware (one Mac mini M4 Pro + one NVIDIA DGX Spark). Total compute cost approximately $0. Headline findings: Cross-architecture residual-stream layer alignment: qwen-7B layer 15 ↔ falcon-7B layer 16 at fingerprint similarity 0.868 Middle layers (50-60% depth) most universally aligned across families (33/51 model-pairs at sim ≥ 0.7) DeepSeek-R1:70b inherits qwen anchor structure through distillation

Chen, Ho Yiing (norika) · Independent Researcher, Taiwan · ORCID 0009-0006-6816-9891