refresh-index

refresh-index is a skill for Claude Code from Abilityai/cornelius. It costs 16 tokens per session (1,476 once invoked), scanned A, original, MIT.

A workflow that rebuilds a FAISS search index, which is a data structure used to find notes by meaning. It reprocesses changed or new notes so semantic search reflects the current contents of the vault.

In plain words
What is it for?
It helps update the semantic-search index after vault changes and keep related knowledge tools based on that index current.
Why use it?
It prevents search results from missing recent edits or newly added notes because the index still contains older data.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit It helps update the semantic-search index after vault changes and keep related knowledge tools based on that index current.

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Install with agentmods
npx agentmods add skills/abilityai/cornelius/refresh-index
Install

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.

Any agent
npx skills add Abilityai/cornelius --skill refresh-index
Clone the repo
git clone --depth 1 https://github.com/Abilityai/cornelius

Made for: Claude Code.

Wrote 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.

agentmods badge for refresh-index

README.md
[![agentmods](https://agentmods.dev/badge/skills/abilityai/cornelius/refresh-index.svg)](https://agentmods.dev/skills/abilityai/cornelius/refresh-index)
Your own site
<a href="https://agentmods.dev/skills/abilityai/cornelius/refresh-index"><img src="https://agentmods.dev/badge/skills/abilityai/cornelius/refresh-index.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,476 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00016 $0.01476
Opus 5 $0.00008 $0.00738
Sonnet 5 $0.00003 $0.00295
Haiku 4.5 $0.00002 $0.00148

Measured 3d ago against content hash 852509a3b2b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

refresh-index 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 3d 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.

.claude/skills/refresh-index/SKILL.md · 152 lines

How it starts

The opening of the file, as written. The whole thing — 152 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Refresh Index

Rebuild the Local Brain Search vector index to ensure semantic search reflects current vault state.

Purpose

The FAISS index is not auto-updated. This playbook refreshes it so semantic search (and the BDG enrichment layer the Brain Orb reads) reflect the current vault. The indexer is incremental — it re-embeds only changed/new notes — so a daily refresh is a matter of seconds and never a long-running job.

State Dependencies

Source Location Read Write Description
Brain notes Brain/**/*.md Source content to index
Index script resources/local-brain-search/run_index.sh Indexer
FAISS index resources/local-brain-search/brain_index/ Output index

Prerequisites

  • Local Brain Search installed at resources/local-brain-search/
  • Python environment with FAISS dependencies

Process

Step 1: Verify Prerequisites

Check indexer exists:

test -f resources/local-brain-search/run_index.sh && echo "OK" || echo "MISSING"

If missing, abort.

Step 2: Run the Indexer (incremental, short, resumable)

The indexer is incremental: it reuses the embedding of every note whose content is unchanged and re-embeds only the delta. A normal daily run touches a handful of notes and finishes in seconds — there is no long-running job here anymore. Run it, then read the LAST line of its output:

resources/local-brain-search/run_index.sh

The final line is machine-readable:

RESULT reused=<N> embedded=<N> remaining=<N>
  • remaining=0 → the index is complete; go to Step 3.
  • remaining>0 → a large (cold/forced) rebuild was split into short, Trinity-safe batches (default cap: 500 notes/run). Run the exact same command again — each call reuses what's already indexed and embeds the next batch. Repeat until remaining=0. Daily runs are always a single pass.

Execution rules — each call is short (seconds to ~2 min) and must STREAM:

Read the full file on GitHub · 152 lines

Changes

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.

  1. 3d ago First seen · 152 lines · 16 tokens per session scan A 852509a3b2b6

Subscribe to this mod's changes

refresh-index is a skill published in the GitHub repository Abilityai/cornelius (106 stars, last pushed 14d ago), licensed MIT. It adds 16 tokens to every session and 1,476 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 2026-09-03.

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