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Oct 16
PapersBuildersMulti-sourceSelected11:32
MLExpert: 35B Agentic Model for Autonomous Machine Learning Engineering

A 35B model matching frontier-scale systems on MLE-Bench Lite suggests agentic MLE performance depends more on training method than raw parameter count, lowering the hardware bar for teams building autonomous experimentation agents. The WIRL reward design over multi-turn execution windows is a reusable recipe for anyone training long-horizon agents beyond ML engineering. The paper also ships an executable task factory, so practitioners can adapt the harness to their own domains.

Event
arXiv cs.LG@Shangheng Du et al. (10)Source
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PapersPolicyMulti-sourceSelected11:27
MCP-FSD Uncovers Filesystem Capability Laundering in MCP Servers

Client-side tool approval in MCP grants the whole server process broad filesystem access, so a tool approved for one operation can exfiltrate credentials the contract never mentions. Security engineers running local agent stacks should audit installed MCP servers and enforce sandbox boundaries rather than trusting declared tool schemas. The two CVEs in Anthropic's Git MCP Server make this a concrete patch item for anyone using that server.

Event
arXiv: Anthropic@Zeqian Huang et al. (5)Source
PapersBuildersMulti-sourceSelected09:41
System1-Arena benchmark tests which decisions LLMs can make without reasoning

The benchmark gives a concrete cost-accuracy-latency trade-off table for choosing between cheap probability-returning models and expensive reasoning models in production decision pipelines. Teams building flagging, escalation or agent control systems can use the 105-task and 138-environment breakdowns to match model class to task type. The finding that open LLMs beat System-1 models in closed loops challenges assumptions about small fast models in agentic settings.

Event
arXiv: OpenAI@Tianyu Chen et al. (5)Source

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