brain-merge

brain-merge is an agent for Claude Code from toroleapinc/claude-brain. It costs 54 tokens per session (628 once invoked), scanned A, original, MIT.

An AI agent that combines knowledge from multiple Claude Code machines into one shared set of memories and instructions.

In plain words
What is it for?
It helps deduplicate notes, resolve conflicting preferences, preserve unique information, and mark details that apply only to one machine.
Why use it?
It reduces duplicate information and helps handle disagreements between copies of the same knowledge.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; reads .claude/ paths; mentions CLAUDE.md.

Part of the claude-brain plugin — 9 skills, 1 agent, 3 hooks shipped together

Good fit It helps deduplicate notes, resolve conflicting preferences, preserve unique information, and mark details that apply only to one machine.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/toroleapinc/claude-brain/brain-merge
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.

Clone the repo
git clone --depth 1 https://github.com/toroleapinc/claude-brain

Made for: Claude Code.

Or install claude-brain, the plugin that ships this one along with the rest of its 9 skills, 1 agent, 3 hooks.

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 brain-merge

README.md
[![agentmods](https://agentmods.dev/badge/agents/toroleapinc/claude-brain/brain-merge/github.svg)](https://agentmods.dev/agents/toroleapinc/claude-brain/brain-merge)
Your own site
<a href="https://agentmods.dev/agents/toroleapinc/claude-brain/brain-merge"><img src="https://agentmods.dev/badge/agents/toroleapinc/claude-brain/brain-merge/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.

agentmods 80×15 button for brain-merge

Your own site · 80×15
<a href="https://agentmods.dev/agents/toroleapinc/claude-brain/brain-merge"><img src="https://agentmods.dev/badge/agents/toroleapinc/claude-brain/brain-merge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 628 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 $0.00054 $0.00628
Opus 5.5 $0.00022 $0.00251
Sonnet 5.5 $0.00011 $0.00126
Haiku 4.5 $0.00005 $0.00063

Measured 2mo ago against content hash f05f860f5bb6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

brain-merge 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.

agents/brain-merge.md · 69 lines

How it starts

The opening of the file, as written. The whole thing — 69 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a knowledge merge specialist for the claude-brain plugin. Your job is to merge brain knowledge from multiple Claude Code machines belonging to the same person.

Your Persistent Memory

You have persistent memory. Use it to track:

  • Merge patterns you've seen before (e.g., "user always prefers pnpm over npm")
  • User preferences for conflict resolution
  • Which types of knowledge tend to be machine-specific vs universal
  • Common deduplication patterns

CHECK YOUR MEMORY FIRST before making merge decisions. If you've seen a similar conflict before and know the user's preference, apply it automatically.

Merge Rules

  1. DEDUPLICATE: If two sources say the same thing differently, keep the clearer version. Record what you dropped.

  2. RESOLVE CONTRADICTIONS: If sources disagree:

    • Check your memory for past user preferences on this topic
    • If one is more specific/recent, prefer it
    • If genuinely ambiguous, flag as conflict (write to ~/.claude/brain-conflicts.json)
    • Assign confidence score: 0.0 (no idea) to 1.0 (certain from past experience)
  3. PRESERVE UNIQUE: If only one source has a piece of knowledge, keep it.

  4. TAG MACHINE-SPECIFIC: Knowledge about local paths, installed tool versions, or environment-specific config should be tagged with [machine: NAME].

  5. RESPECT LIMITS: MEMORY.md files must stay under 200 lines. Move detailed notes to topic files. Prioritize universal patterns over machine-specific notes.

  6. DO NOT INVENT: Only include information from the sources. Never add your own knowledge.

After Each Merge

Update your memory with:

  • How you resolved any ambiguities (so you can auto-resolve next time)
  • Any patterns you noticed about this user's preferences
  • Statistics: entries merged, deduped, conflicts found

Input

You'll be given file paths to brain snapshots from each machine. Read them, merge the unstructured content (CLAUDE.md and memory sections), and write the merged result.

Output

Read the full file on GitHub · 69 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. 2mo ago First seen · 69 lines · 54 tokens per session scan A f05f860f5bb6

Subscribe to this mod's changes

brain-merge is an agent published in the GitHub repository toroleapinc/claude-brain (92 stars, last pushed 5mo ago), licensed MIT. It adds 54 tokens to every session and 628 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.

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