Tandem
A standing team of AI agents, Claude Code, Codex and Cursor, that debate, vote unanimously, split the work and review each other.
- 450 commits in 5 days
- 2 to 26 agents per team
- ≈ 733 tests
Node 24, TypeScript, built-in SQLite, React 19
HeartBtz
One fox, a red moon, and a whole self-hosted world.
I design, write and run my own tools, solo: applications, local AI on my own GPUs, and the secured fleet that keeps them running.
The tools
Seven pieces of software, designed and written solo, in production or in the works.
Screens show demo data.
Nacre Studio
From a written description to an animated 2D VTuber avatar, exported as .moc3 for VTube Studio without Cubism Editor.
- 399 commits
- ≈ 1,331 tests
- 108 validated poses
Electron, React 19, OpenCV.js, MediaPipe
Encodium
Batch video re-encoding on GPUs. Every file is checked, tracks, HDR, Dolby Vision, SSIM, before it replaces the original, which stays recoverable for seven days.
- 20 releases
- 14 languages
- 3 codecs
Node, MariaDB, ffmpeg (NVENC, VA-API, QSV)
FluxGate
A file cloud: sharing, per-file end-to-end encryption, WebDAV, a CLI and an MCP server.
- 11 releases in 4 weeks
- 89 MCP tools
- 284 tests
Go, PostgreSQL, S3
PXL
An imgur-style image host with an OpenAPI 3.1 API and an MCP server, fully usable from the keyboard.
- 14 MCP tools
- 4 image formats
- Strict CSP
Go, PostgreSQL, S3
Relay
A one-sentence request becomes a merge request: LLM-written spec, coding agent, CI, tag and health check.
- 58 commits
- ≈ 116 tests
- Retired from production, kept
Hono, BullMQ, PostgreSQL, React
vllm-router
One OpenAI-compatible URL in front of two AMD Radeon AI PRO R9700 GPUs. Hot switching between vLLM, llama.cpp and ComfyUI, with request draining and automatic rollback.
- 640,000 tokens of context
- 10 releases
- ≈ 283 tests
Python, FastAPI, React 19, ROCm
The fleet
Thirty-one machines, kept in line by tools written in-house. Nothing gets in without leaving a trace.
Teleport bastion
No permanent SSH key: short-lived certificates, MFA, recorded sessions. Adding a machine takes one command.
MCP fleet
Seven servers, 168 tools for AI agents. Read-only by default, dry run then confirmation before any write.
Monitoring and defence
Wazuh, CrowdSec and Beszel. Eleven dashboards generated from code, 90 visualisations.
Automation
A home-made Ansible console: every playbook runs as a dry run before it is applied.
Backups
Proxmox Backup Server, a weekly off-site copy, encrypted archives.