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 skills add tonydzi/second-brain-starter-kit --skill chat-searchgit clone --depth 1 https://github.com/tonydzi/second-brain-starter-kitWrote 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/skills/tonydzi/second-brain-starter-kit/chat-search)<a href="https://agentmods.dev/skills/tonydzi/second-brain-starter-kit/chat-search"><img src="https://agentmods.dev/badge/skills/tonydzi/second-brain-starter-kit/chat-search.svg" alt="Measured on agentmods" 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 | $0.00088 | $0.00828 |
| Opus 5 | $0.00044 | $0.00414 |
| Sonnet 5 | $0.00018 | $0.00166 |
| Haiku 4.5 | $0.00009 | $0.00083 |
Grade A, and why
chat-search 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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/chat-search — the book of chats (search inside old sessions)
A thin wrapper over $IMPORTS_ROOT/chat_search.py. Do NOT reimplement the logic — call the engine and show the result.
When
- "which chat did we discuss X in?", "have we already looked into this?", "find the old conversation about X".
- Before starting a new topic — check whether it was already dug into (the twin of RECALL).
What it is (and what it is NOT)
- It searches a separate session index
_brain_sessions.npy(21k+ chunks from_session-md\<machine>\<cli>.md), built bybrain_sessions_index.py. - It is NOT the essence index behind
/ask: raw chats are deliberately excluded from the sharp "mind" (the essence/evidence decision, 2026-06-26). This is the evidence layer — "where exactly it was discussed" — while/askanswers "what I think". - HUMAN chats only: service/robot sessions are filtered out at export time (a classifier + a cheap-model judge).
How to run
python "$IMPORTS_ROOT/chat_search.py" "query in your own words"
python "$IMPORTS_ROOT/chat_search.py" --machine LAPTOP-1 "query" # one machine only
python "$IMPORTS_ROOT/chat_search.py" -n 8 "query" # top-N (default 10)
Every hit: [rr=score] date · machine · topic + a snippet + the line ▶ continue: python continue_session.py <cli>.
Continue a chat you found
Copy the command from the hit (or use /resume-last for the most recent one). continue_session.py <cli> assembles a seed of the old chat into the clipboard — paste it into a new session.
Caveats (AK-47)
- The index is built at night (
run_session_archive.local.cmd→brain_sessions_index.py, incrementally). A fresh chat shows up after the nightly run; to force it:python brain_sessions_index.py. - Index missing / empty → the engine itself tells you
Run: python brain_sessions_index.py --full. - Reranker scores can be negative — what matters is the ORDER (top-1 = most relevant), not the sign.
- Siblings:
/ask(meaning across the vault),/search(exact words in Telegram/FB/ChatGPT),/resume-last(continue the latest).
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.
- 7d ago First seen · 55 lines · 88 tokens per session scan A 56b480df6413
chat-search is a skill published in the GitHub repository tonydzi/second-brain-starter-kit (5 stars, last pushed 8d ago), licensed MIT. It adds 88 tokens to every session and 828 once invoked, about $0.0004 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 skills, from other repositories
save
Save a user-selected answer, decision, insight, or session summary into an Obsidian vault as one reviewed transaction. Use only when the user explicitly asks to preserve specific conversation content, not when they supply a file or URL to ingest. Triggers: /save, save this, save that answer, file this conversation…
wiki-retrieve
Build and query a vault-local contextual BM25 retrieval index with optional multilingual Nomic cosine reranking; use for retrieve, hybrid retrieval, BM25, rerank, contextual retrieval, chunk search, vault search, semantic search, find relevant passages, or retrieval diagnostics. Derived caches stay under .vault-meta…
obsidian-bases
Explain, draft, and validate Obsidian Bases .base files with filters, formulas, properties, summaries, and table, card, or list views. Use for Obsidian Bases, database-like vault views, dynamic tables, reading lists, task trackers, filters, formulas, summaries, and .base file edits.
wiki-fold
Create a bounded, extractive, structurally idempotent rollup of recent Obsidian wiki log entries, with dry-run preview by default and one optional transaction apply. Use for manual log compression without modifying child pages. Triggers: fold the log, run a fold, run wiki-fold, log rollup, roll up log entries, commit…
wiki-mode
Read or configure the vault filing methodology and suggest destinations for planned knowledge creation under Generic, LYT, PARA, or Zettelkasten. Use for wiki mode, methodology mode, what is my vault mode, set vault mode, switch to PARA, use LYT, Zettelkasten setup, change mode, configure mode, or methodology routing.…
wiki-cli
Detect and use the official Obsidian command-line interface for read-only vault access; use for wiki-cli, Obsidian CLI, Obsidian read, Obsidian search, vault transport, which transport, transport detection, backlinks, tags, or Obsidian command line. Mutations always go through the claude-obsidian transaction core.