Story · arXiv
Metis: Typed Runtime Mediation for Tool-Using Software Agents (arXiv)
paper · Story page
Metis sits between a provider's token stream and anything that can change a repository, process, network or GUI, turning the stream into typed events so permission decisions and lifecycle transitions stay inspectable. Across 30 matched real-I/O pairs, four-class mediation cut median elapsed time from 25.958 ms under forced serialization to 14.146 ms; a ten-case fault matrix exposed duplicate-identifier and rollback limits.
In plain words
- Researchers introduced Metis, software that checks artificial intelligence actions before they can change code, programs, networks, or applications.
- It turns incoming output into clearly labeled events before any requested action reaches the computer or another external system.
- Permission choices, competing actions, final results, and movement between stages remain visible for inspection.
- It could help developers control action-taking artificial intelligence while seeing exactly what was allowed, blocked, or completed.
Appeared in
- A website summary hijacks Claude Code Auto Mode, and handoffs turn must into maybe
Aug 28, 2026 · in the sections
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