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 agentmods add commands/spillwavesolutions/agent-brain/agent-brain-installgit clone --depth 1 https://github.com/SpillwaveSolutions/agent-brainWhat 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 | $0.00020 | $0.01617 |
| Opus 5 | $0.00010 | $0.00809 |
| Sonnet 5 | $0.00004 | $0.00323 |
| Haiku 4.5 | $0.00002 | $0.00162 |
Grade E, and why
agent-brain-install scanned grade E with 4 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -LsSf https://astral.sh/uv/install.sh | sh Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
PYPI_VERSION_SCRIPT=$(find ~/.claude/plugins/agent-brain/scripts ~/.claude/skills/agent-brain/scripts agent-brain-plugin/scripts -name "ab-pypi-version.sh" 2>/dev/null | head -1) Enumerates other installed skillsmediumAgent snooping
Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.
PYPI_VERSION_SCRIPT=$(find ~/.claude/plugins/agent-brain/scripts ~/.claude/skills/agent-brain/scripts agent-brain-plugin/scripts -name "ab-pypi-version.sh" 2>/dev/null | head -1) Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
VERSION=$(curl -sf https://pypi.org/pypi/agent-brain-rag/json | python3 -c "import sys,json; print(json.load(sys.stdin)['info']['version'])") How it starts
The opening of the file, as written. The whole thing — 249 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Install Agent Brain Packages
STOP - READ THIS FIRST
DO NOT RUN ANY INSTALLATION COMMANDS YET.
You MUST ask the user which installation method they prefer using the AskUserQuestion tool BEFORE doing anything else.
Step 1: Ask User for Installation Method
THIS IS MANDATORY. DO NOT SKIP THIS STEP.
Use the AskUserQuestion tool with this exact structure:
{
"questions": [{
"question": "Which installation method do you prefer for Agent Brain?",
"header": "Install via",
"options": [
{
"label": "pipx (Recommended)",
"description": "Install globally in an isolated environment. No activation needed."
},
{
"label": "uv",
"description": "Fast, modern Python tool installer. Good for power users."
},
{
"label": "pip (venv)",
"description": "Install into a local virtual environment. Requires activation."
},
{
"label": "conda",
"description": "For conda users. Creates a conda environment with pip inside."
}
],
"multiSelect": false
}]
}
STOP HERE AND WAIT FOR THE USER'S RESPONSE.
Do not proceed until you have called AskUserQuestion and received the user's selection.
Step 1.5: Resolve Version
After receiving the user's installation method choice, resolve the latest version from PyPI:
# Resolve helper script path (installed plugin or local repo)
PYPI_VERSION_SCRIPT=$(find ~/.claude/plugins/agent-brain/scripts ~/.claude/skills/agent-brain/scripts agent-brain-plugin/scripts -name "ab-pypi-version.sh" 2>/dev/null | head -1)
if [ -n "$PYPI_VERSION_SCRIPT" ]; then
VERSION=$("$PYPI_VERSION_SCRIPT")
echo "Latest available: $VERSION"
else
echo "ab-pypi-version.sh not found — falling back to inline version lookup"
VERSION=$(curl -sf https://pypi.org/pypi/agent-brain-rag/json | python3 -c "import sys,json; print(json.load(sys.stdin)['info']['version'])")
echo "Latest available: $VERSION"
fi
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.
- 2d ago First seen · 249 lines · 20 tokens per session scan E 4929378274e9
agent-brain-install is a command published in the GitHub repository SpillwaveSolutions/agent-brain (117 stars, last pushed 2d ago), licensed MIT. It adds 20 tokens to every session and 1,617 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it E with 4 findings (downloads and executes remote code, reads agent configuration directories, enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other commands, from other repositories
checklist
Generate a custom checklist for the current feature based on user requirements.
clarify
Identify underspecified areas in the current feature spec by asking up to 5 highly targeted clarification questions and encoding answers back into the spec.
specify
Create or update the feature specification from a natural language feature description.
analyze
Perform a non-destructive cross-artifact consistency and quality analysis across spec.md, plan.md, and tasks.md after task generation.
constitution
Create or update the project constitution from interactive or provided principle inputs.
converge
Assess the current codebase against the feature's spec, plan, and tasks, then append any remaining unbuilt work as new tasks to tasks.md so implement can complete it.