Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/productstein/holomime/brainnpx skills add productstein/holomime --skill braingit clone --depth 1 https://github.com/productstein/holomimeWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00058 | $0.00299 |
| Opus 5 | $0.00029 | $0.00150 |
| Sonnet 5 | $0.00012 | $0.00060 |
| Haiku 4.5 | $0.00006 | $0.00030 |
Grade A, and why
brain scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Brain Visualization
Launch the NeuralSpace 3D brain visualization to watch behavioral patterns fire in real-time.
Usage
npx holomime brain $ARGUMENTS
Opens http://localhost:3838 in your browser.
Features
- 9 brain regions mapped to behavioral dimensions
- Real-time pattern detection — watch detectors fire as the agent works
- Auto-detects IDE agents — Claude Code, Cline, Cursor, OpenClaw
- Shareable snapshots —
--sharegenerates a public URL
Options
--port 3838— custom port (default 3838)--share— generate a shareable snapshot URL atapp.holomime.com/brain/<id>
Gotchas
- Runs as a local web server — keep the terminal open while viewing
- Works best in Chrome/Edge for WebGL performance
- The brain auto-connects to running agent processes in the same directory
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 37 lines · 58 tokens per session scan A 5ff1d36d81a6
brain is a skill published in the GitHub repository productstein/holomime (1 stars, last pushed 5mo ago), licensed MIT. It adds 58 tokens to every session and 299 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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