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Three Agent Harnesses Converged on Five Pieces—and Missed the Sixth

A source-level case study finds replayable sessions, model quirks as data, progressive context and extension seams across opposing designs.

Published Updated Story ID: mp-2026-08-26-026
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Summary

A source-level case study finds replayable sessions, model quirks as data, progressive context and extension seams across opposing designs.

The authors trace convergence through parallel discovery, diffusion and direct reuse rather than claiming independent invention. All three examined coding-agent harnesses showed the five recurring elements, while none supplied an externally verifiable, tamper-evident record that an outside party could check without trusting the runtime.

Why it matters

A source-level case study finds replayable sessions, model quirks as data, progressive context and extension seams across opposing designs.

Limits and context

No additional limitation was separately recorded.

Key claims

  1. A source-level case study finds replayable sessions, model quirks as data, progressive context and extension seams across opposing designs.

    Evidence: source-2026-08-26-015

Sources

  1. arXiv preprint 2608.23953arXiv · primary research

Corrections

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