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.
git clone --depth 1 https://github.com/mycelium-hq/ai-brain-starterWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/commands/mycelium-hq/ai-brain-starter/second-brain-mapping)<a href="https://agentmods.dev/commands/mycelium-hq/ai-brain-starter/second-brain-mapping"><img src="https://agentmods.dev/badge/commands/mycelium-hq/ai-brain-starter/second-brain-mapping/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/commands/mycelium-hq/ai-brain-starter/second-brain-mapping"><img src="https://agentmods.dev/badge/commands/mycelium-hq/ai-brain-starter/second-brain-mapping.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.00022 | $0.00111 |
| Opus 5 | $0.00011 | $0.00056 |
| Sonnet 5 | $0.00004 | $0.00022 |
| Haiku 4.5 | $0.00002 | $0.00011 |
Grade A, and why
second-brain-mapping 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 8d ago.
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
The user typed /second-brain-mapping. Invoke the second-brain-mapping skill via the Skill tool, forwarding any arguments the user provided after the slash command. If second-brain-mapping is not in the available-skills list, tell the user the skill isn't installed and suggest running bash ~/.claude/skills/ai-brain-starter/bootstrap.sh to install it.
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.
- 8d ago First seen · 6 lines · 22 tokens per session scan A 94e8d8181507
second-brain-mapping is a command published in the GitHub repository mycelium-hq/ai-brain-starter (36 stars, last pushed yesterday), licensed MIT. It adds 22 tokens to every session and 111 once invoked, about $0.0001 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.
Other commands, from other repositories
create-command
Create a new obsidian-second-brain command via interview - zero markdown editing required.
obsidian-export
Export a clean structured snapshot of the vault that any agent or tool can consume - flat JSON, markdown index, or an OKF (Open Knowledge Format) bundle.
obsidian-reindex
Refresh the vault's semantic search index and report coverage before and after.
obsidian-calendar
One calendar command with four modes - agenda (read a snapshot), reconcile (vault vs calendar gaps), meeting (event to note), schedule (task to event).
obsidian-merge
Merge two near-duplicate notes found by /obsidian-health into one - dry run by default, redirects the retired note rather than deleting it.
obsidian-catchup
Review and process everything captured on the go from the Telegram journal bot - voice, text, images, PDFs, links - waiting in the catchup queue. You pull it when you are back at the laptop; nothing is processed autonomously.