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koydas/README.md

Stéphane Hamel

Platform engineer. I build agentic SDLC pipelines and the infrastructure they run on.

Thesis — bounded autonomy. Let agents do the work, but enforce in code what a prompt can only ask, ground every verdict in executed evidence, and keep a human at the irreversible step. Every repo below is that idea under a different constraint.

Agentic SDLC

autonomous-dev-loop Issue → AI PR → evidence-backed AI review → auto-fix → human merge, on GitHub Actions. Built after an agent replaced a 26-test suite with an 18-line stub; 11 of its own features were shipped by the loop. 800+ tests, 25 ADRs.
ai-dev-tools The interactive counterpart in Claude Code: typed builders, an adversarial challenger, and a reviewer that runs your tests before it calls a patch done.
agent-patterns 15 multi-agent patterns indexed by the problem they solve — diagrams, trade-offs, failure modes, runnable code. 12 extracted from the two repos above.

Infrastructure

gitops-homelab Chat, code, vision, speech-to-text and text-to-speech models on one 6 GB GTX 1060 — bare-metal microk8s, ArgoCD, GPU time-slicing. 25 ADRs, 13 incidents written up with root cause.
ollama-chat Self-hosted chat UI for local LLMs, deployed by the repo above.

Platform fundamentals

sync-engine Webhooks drop events, polling is late: a Python sync engine built around 11 integration failure modes, each mapped to an ADR and a test.
fullstack-pilot Node, Python and .NET on MongoDB, PostgreSQL and SQL Server — with CI that tests database image upgrades against existing data.
flowchart LR
    subgraph sdlc["Agentic SDLC"]
        adl["autonomous-dev-loop<br/>headless · GitHub Actions"]
        adt["ai-dev-tools<br/>interactive · Claude Code"]
        ap["agent-patterns"]
    end
    subgraph infra["Self-hosted infrastructure"]
        gh["gitops-homelab<br/>microk8s · ArgoCD · GTX 1060"]
        oc["ollama-chat"]
    end
    subgraph fund["Platform fundamentals"]
        se["sync-engine"]
        fp["fullstack-pilot"]
    end
    adl -- "patterns extracted to" --> ap
    adt -- "patterns extracted to" --> ap
    adl -.-|"same pipeline, two modes"| adt
    gh -- "deploys" --> oc
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How I work

  • Decisions in writing. 65+ ADRs across these repos, each with rejected alternatives and consequences.
  • Incidents, not hypotheticals. Guardrails and config trace back to a specific failure: a deleted test suite, a CUDA OOM, a Helm setting that never reached the pod.
  • Measure, then decide. Quantization chosen by benchmark and by executing the generated code, not by reputation.
  • Honest scope. What's enforced in code and what's only asked of a model are documented separately.

Current focus

  • Moving LLM guardrails from prompts into deterministic checks — import allowlists and type-check gates before a PR opens (ADR-0019, proposed).
  • Evaluating local models on constrained hardware by running what they produce (ADR-0011).

Node.js · .NET · Python · Kubernetes · ArgoCD · GitHub Actions · Claude API · Ollama

Pinned Loading

  1. autonomous-dev-loop autonomous-dev-loop Public

    Issue → PR → AI review → auto-fix, on GitHub Actions. The model proposes, code enforces (failing checks block approval, write denylist, 3-attempt cap), a human merges.

    JavaScript 2 1

  2. ai-dev-tools ai-dev-tools Public

    Claude Code agents that can't call a patch done until the repo's own tests, lint and type-check pass. Issue to uncommitted patch, then it stops at you.

    JavaScript 1

  3. agent-patterns agent-patterns Public

    15 multi-agent patterns indexed by the problem they solve. Each has a diagram, failure modes, when not to use it, and a runnable impl.mjs. 12 are used in two public pipelines.

    JavaScript 1

  4. fullstack-pilot fullstack-pilot Public

    Polyglot reference: Node, Flask, .NET 10, React over MongoDB, PostgreSQL and SQL Server. CI refuses database image bumps that can't read the previous version's data.

    JavaScript 1

  5. sync-engine sync-engine Public

    Python sync engine for webhook + REST: dedup by event_id, versioned last-writer-wins, watermark reconciliation. Convergence checked by property-based tests.

    Python