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MinSync: Instructions file for Claude Code

CLAUDE.md

MinSync CLAUDE.md is an instructions file for Claude Code from NomaDamas/MinSync. It costs 266 tokens per session, scanned A, a copy of MinSync AGENTS.md, MIT.

A Rust command-line tool that incrementally indexes text files for a vector database, which stores numerical representations used for similarity search. It tracks file changes with a manifest and needs no Git repository.

In plain words
What is it for?
Use it to index UTF-8 text files, exclude paths with .minsyncignore, detect additions and changes, and maintain crash-safe indexing state.
Why use it?
It avoids reprocessing unchanged text files and keeps indexing state safely between runs. Binary files such as PDFs, images, and spreadsheets are not extracted or indexed as text.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is NomaDamas/MinSync's own configuration. It tells Claude Code how to work on MinSync itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything MinSync configures →

not rated 60repo yesterday A scan 266 tokens copy · 100% MIT
View source ↗ NomaDamas/MinSync
Reuse

Borrowing it

Nothing to install: this file belongs to NomaDamas/MinSync. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/NomaDamas/MinSync/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/NomaDamas/MinSync

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.

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README.md
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Your own site
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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.

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Per session 266 This file is loaded in full into every session.
When invoked 266 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod 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 $0.00266 $0.00266
Opus 5.5 $0.00106 $0.00106
Sonnet 5.5 $0.00053 $0.00053
Haiku 4.5 $0.00027 $0.00027

Measured 2mo ago against content hash 6886c6e691dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

MinSync CLAUDE.md 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 2mo 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.

Origin

This is a copy

100% identical to MinSync AGENTS.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

CLAUDE.md · 14 lines

What it actually says

MinSync

Manifest-based incremental vector DB indexing CLI tool written in Rust. No git required.

Core Principles

  • Git-free: manifest (mtime + size + content_hash) based change detection. Zero git dependency.
  • Rust native: Pure Rust, no C++ dependencies. chonkie-core (chunk crate) built-in.
  • State directory: .minsync/ (config.toml, manifest.json, cursor.json, txn.json, lock)
  • Indexing target: All files in directory. Exclude via .minsyncignore (.gitignore syntax).
  • Text files only: MinSync reads files as UTF-8 text and does NO content extraction. Binary formats (PDF, DOCX, XLSX, images, ...) fail the UTF-8 read and are treated as empty — they are never chunked or embedded. Add them to .minsyncignore. Supporting them would require a separate text-extraction pipeline.
  • Crash-safe: Cursor updated only after all processing completes. mark+sweep guarantees convergence.
  • Deterministic ID: sha256(source_id + \0 + path + \0 + chunk_schema_id + \0 + chunk_type + \0 + content_hash + \0 + dup_index).
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. 2mo ago First seen · 14 lines · 266 tokens per session scan A 6886c6e691dc

Subscribe to this mod's changes

MinSync CLAUDE.md is an instructions file published in the GitHub repository NomaDamas/MinSync (60 stars, last pushed yesterday), licensed MIT. It adds 266 tokens to every session, about $0.0011 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to MinSync AGENTS.md, differing in 0 lines, and is treated as a copy.

Data and AIRAG and vectors
Related

MinSync CLAUDE.md compared with instructions from other repositories

MinSync CLAUDE.md next to 6 instructions from other repositories
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MinSync CLAUDE.mdNomaDamas/MinSyncInstructions file60yesterdayMITA266Claude Code
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vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode