§ i  ·  The thesis of the lab

Security is
no longer
optional.

Rexion is a research lab building autonomous agents that find vulnerabilities at the speed of code being written.

§ ii  ·  the instrument

The lab instrument.

Instr. I deep audit

Athena

Vulnerability scanner that thinks.

Reads an entire repository for hours, reasons about it from first principles, and reports only the findings that survive internal critique.

Run time10+ hours Triggeron-demand Outputreport with repro
Open the folio →
Instr. II continuous

Continui

Reasoning on every pull request.

Multi-agent system optimized for CI — reading each diff the moment it is opened, catching the fault before the merge.

Run timeminutes Triggerevery PR Outputinline review
✦ To be unsealed
§ iii  ·  the notebooks

Recent field reports, straight from the lab.

  1. i.

    Agents Engineering: Context

    Agent performance degrades as the context gets grows. This post covers techniques for agents to stay effective as tasks get more complex, including methods for better harness design, fewer tools, smarter MCP setups, and safer compaction.

    January 16, 2026 · 12 min · Agent Engineering
    →
Full archive →
§ iv  ·  correspondence

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