D.Challoner

§ Chapter IV

Projects

Things I have
quietly built.

A selection of personal and commercial work, ranging from the modestly useful to the ambitiously unfinished. Dates are honest; completeness isn’t.
Current
3 shipping
Languages
Rust · Python · TS
Home
github / s1liconcow
Year
MMXXVI

01

Just Auth

AI-powered privileged data access governance.

Intercepts and validates privileged data access requests — from humans and AI systems alike — by requiring real-time business justifications before granting access. Sub-200ms validation. Tamper-proof audit logs. Integrates with M365, AWS, GCP, Snowflake, Okta, and the rest of the enterprise stack. Built for regulated industries that can’t afford either false positives or unjustified access.

● live2026 · Startup · Commercial
AuthZABACAuditSOX · HIPAA

02

RepoGauge

Benchmark AI coding agents on your actual codebase.

A local-first benchmarking tool that mines bugfix commits from your repo’s history, converts them into SWE-bench-style evaluation tasks, and runs coding agents side-by-side with full cost and token tracking. Also trains cost-aware routers to pick the right solver per task. Because “it works on the SWE-bench leaderboard” is not quite “it works on our code”.

● live2026 · OSS / Tool
PythonDockerSWE-benchLLM Evals

03

ClawFS

A shared filesystem for AI agents.

Persistent, POSIX-compliant, object-backed filesystem for AI-agent and multi-client workloads. No external metadata DB required — metadata is log-structured into the same object store as the data. Passes pjdfstest and the xfstests smoke suite. An answer to a question I kept running into: what does the filesystem look like when most of your callers are agents?

● live2026 · OSS / Infra
RustFUSES3 · GCSPOSIX

04

Access Control Based on Request Path

Every device the request crosses, not just the endpoints.

A path-aware access-control mechanism: rather than checking source and destination, validate every device a request traverses against regional data controls. Published as TDCommons 6837.

● live2024 · Invention disclosure
AuthZPolicyData Governance

05

Securing apps for Googlers using Anthos Service Mesh

How Access SRE rolled ASM internally at Google.

Co-authored with Anthony Bushong. The reference account of how Google’s Corp Eng teams adopted Anthos Service Mesh to secure Googler access across trust boundaries, across cloud and on-prem, with minimal operational overhead.

● live2022 · Writing · Google Cloud
AnthosIstioZero Trust

Code lives on github / s1liconcow.