Development

Agent control logic becomes a portable natural-language object

development2026-03-31

Claim

Natural-Language Agent Harnesses externalize agent control logic as portable editable natural-language artifacts, making the harness itself a first-class programmable object, while WR-Arena began benchmarking world models on action fidelity and long-horizon forecasting.

Reporting date: 2026-03-31 (not necessarily the event date)

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Welcome to March 31, 2026 (theinnermostloop.substack.com)

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Welcome to March 31, 2026

Evidence for

Supersedes

A scaffolding SDK claims 36% where a frontier model reached 0.25%

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Agent control logic becomes a portable natural-language object
Innermost Loop KB — secondary record
Reporting date: 2026-03-31
KB permalink: https://nicholsn.github.io/innermost-loop-kb/developments/2026-03-31-harnesses-become-editable-artifacts
Claim: Natural-Language Agent Harnesses externalize agent control logic as portable editable natural-language artifacts, making the harness itself a first-class programmable object, while WR-Arena began benchmarking world models on action fidelity and long-horizon forecasting.
Attributed sources:
- Welcome to March 31, 2026 — https://theinnermostloop.substack.com/p/welcome-to-march-31-2026
This citation does not imply independent verification of linked-source claims.

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