agent-brain-plugin

A Claude Code plugin for searching documentation and source code. It combines keyword matching, meaning-based search, and links between related information.

In plain words
What is it for?
Use it to index documentation and code, then search for exact terms, related concepts, connections in a knowledge graph, or a combined result.
Why use it?
It helps when ordinary text search misses relevant wording or when information is spread across documents and code.

Plugin for Claude Code

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.

Claude Code
/plugin marketplace add SpillwaveSolutions/agent-brain
agentmods
npx agentmods add plugins/spillwavesolutions/agent-brain/agent-brain-plugin
Clone the repo
git clone --depth 1 https://github.com/SpillwaveSolutions/agent-brain

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

agent-brain-plugin 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 2d 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.

agent-brain-plugin/.claude-plugin/plugin.json · 13 lines

What it actually says

{
  "name": "agent-brain",
  "description": "Document search with hybrid BM25/semantic retrieval, GraphRAG knowledge graphs, and pluggable providers for Claude Code. Index documentation and code, then search using keyword matching, semantic similarity, graph relationships, or comprehensive multi-mode fusion.",
  "version": "10.4.0",
  "author": {
    "name": "Spillwave Solutions",
    "email": "[email protected]"
  },
  "homepage": "https://github.com/SpillwaveSolutions/agent-brain",
  "repository": "https://github.com/SpillwaveSolutions/agent-brain",
  "license": "MIT"
}
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. 2d ago First seen · 13 lines scan A 4ec6361c4473

Subscribe to this mod's changes

agent-brain-plugin is a plugin published in the GitHub repository SpillwaveSolutions/agent-brain (117 stars, last pushed 2d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.