> For the complete documentation index, see [llms.txt](https://osintelligence-llc.gitbook.io/osintelligence/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://osintelligence-llc.gitbook.io/osintelligence/part-iii-the-evidence-what-broke/9-the-drift-taxonomy/references-and-provenance.md). # References & provenance ### References & provenance **Provenance.** This chapter is a primary field record. Every incident in it was observed on the author’s own production stack, and the evidence is the dated record of those incidents rather than the published literature, so the chapter cites no external work. That is a property of the material, not an omission: the nine classes were admitted only when a real incident forced each one, and nothing here is inherited from a source that could be cited instead. No internal file, path, or hash identifiers appear in the body. **In-series companions.** [*Stateless by Construction*](/osintelligence/part-i-the-architecture/4-stateless-by-construction.md) (Chapter 4) takes one of these nine classes, compaction-induced drift, and works its mechanical answer out in full, where this chapter catalogues nine and closes five in outline. [*The Sovereign Triad*](/osintelligence/part-i-the-architecture/1-the-sovereign-triad.md) (Chapter 1) argues the general principle the whole taxonomy points toward, that mechanical enforcement at the tool-call boundary is the first of three jointly necessary control surfaces. [*The Hook Telemetry Record*](/osintelligence/part-iii-the-evidence-what-broke/11-the-hook-telemetry-record.md) (Chapter 11) is the quantitative counterpart, the block-level telemetry from the same stack over a later window. Cited in-series by title. ### System Update: July 2026 (appended; the sealed body above is unmodified) The catalogue's central division (the classes a mechanism can close versus the four only a watchful human can) now has a measured backing it did not at seal. Sixty-four days of per-hook telemetry (2026-05-11 → 07-15) record the gates that close the mechanizable classes firing under real load: across **390,515 events** the deterministic layer issued **1,142 hard blocks**, and several map directly onto classes named in this paper: the reorient gate (recency-over-contradiction, Class 1) blocked 50 times, the read-before-edit and dedup gates 69 and 18, the skill-routing and write-protection gates 459 and 239. The drift this paper documents is, class by class, the drift those gates now catch; the four they cannot reach remain exactly where this paper leaves them, with the operator. The full fire record is the companion *Hook Telemetry Record*. Provenance: sixty-six daily per-hook telemetry files. Append-only; the sealed body above is unmodified. ### AI-assistance disclosure Claude (Anthropic) was used as a research tool in the preparation of this chapter, assisting with drafting, structuring and successive revision. The specific model versions were not recorded at the time of authorship and so are not named here. No AI system is listed as an author or credited as a contributor, in line with COPE and ICMJE guidance: an AI system cannot take responsibility for the work, cannot assert competing interests, and cannot enter a licence agreement. The author verified every claim in this chapter against the sealed artifacts and is solely accountable for it. **Citation (preferred):** Kistner, J. (2026). *The Drift Taxonomy: How Autonomous AI Agents Fail Under Sustained Production Load*, version 1.0.0. OSINTelligence LLC. **License:** CC BY 4.0 (text). All referenced code artifacts are MIT licensed unless otherwise noted. **Corresponding author:** Jamey Kistner, , OSINTelligence LLC (Columbus, OH). *** *The Sovereign Stack · The Drift Taxonomy · Chapter 9 · Part III · v1.0.0 · License CC BY 4.0 · © Jamey Kistner, OSINTelligence LLC*