# Free Tools

The tools we use ourselves. Free. No email-wall to read.

## Available now

### [HDC Note Codebook](/tools/codebook)
Turn 10,000 markdown files into a 6-codebook hyperdimensional index that runs on a
laptop. CPU-only, ~20 MB on disk per 10K notes, MIT license.

```bash
pip install hdc-note-codebook
codebook index ~/notes --out notes.codebook
codebook ask notes.codebook "what did I write about retainers in March?"
```

### [Eigenspec Skill](/tools/eigenspec)
A one-file Claude Code skill that writes implementation specs. Paste a problem, get
back a scoped spec with assumptions, a phased plan, a test plan, and a risk register.

```bash
curl -L https://raw.githubusercontent.com/squatch-c-c/eigenspec-skill/main/SKILL.md \
     -o ~/.claude/skills/eigenspec/SKILL.md
```

## Coming soon
- **Bigfoot mesh protocol kit** — sample app for WebRTC + LoRa hybrid mesh
- **Eigenspec evaluation harness** — measure spec quality across a corpus
- **Self-hosted passkey demo** — drop-in WebAuthn server you can fork

## Why we give these away
Each tool is the same one we use to deliver retainer work. Once you've integrated one,
the conversation about a retainer or pilot writes itself.

[Hire us](/hire) · [See retainers](/services#retainers)