0.2.0 Econs

0.2.0 Econs (2026-10-20)

The first public release of the System-1 Gateway: a local MCP server that gives Claude Code and other MCP clients fast multiple-choice decisions from a pluggable engine, and the studies that show which engine to pick.

• Gateway: three stable tools (system1_decide, system1_capabilities, system1_health) in front of Laya, Von, any Ollama chat model or an adapter you add. Python 3.11+ and the standard library only; installs as a Claude Code plugin with guided setup or with one script.
• Study: which System-1 model for naga decisions: eleven engines on tool choice and model building for the naga simulation engine, measured on frozen blind test sets on one 4 GB laptop GPU. The short answer: Claude Haiku 5.5 is the most accurate (22 of 25 tool choices over all 90 tools, 37/40 blocks, 30/30 distributions, about 0.9 s, hosted); Gemma 4 E4B is the most accurate local engine; gte-reranker-modernbert-base is the fast one (about 0.1 s). The report covers retries, fewer-choice designs that did not pay, and fine-tuning that did not hold on the blind set.
• Bench: every number comes from scripts in bench/naga that rerun against a clone of the public naga repository; new engines plug in with one eng_*.py file.
• Open source: Apache-2.0, with contribution and security guides and CI on Ubuntu and Windows.
• Known limit: the study's sets are small (25 tool questions, 40 blocks, 30 distributions), so a difference of one or two rows is noise.