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 skills/codejunkie99/agentic-stack/brainnpx skills add codejunkie99/agentic-stack --skill braingit clone --depth 1 https://github.com/codejunkie99/agentic-stackWhat 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 | $0.00001 | $0.00361 |
| Opus 5 | $0.00000 | $0.00180 |
| Sonnet 5 | $0.00000 | $0.00072 |
| Haiku 4.5 | $0.00000 | $0.00036 |
Grade A, and why
brain 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.
What it actually says
Brain Integration
Use this skill when the task needs durable memory shared across coding-agent
harnesses through the external brain CLI and MCP server.
Check Availability
python3 .agent/tools/brain_bridge.py status
If Brain is missing, tell the user to install it:
brew install codejunkie99/tap/brain
Recall
Before non-trivial work that could depend on prior cross-tool decisions:
python3 .agent/tools/brain_bridge.py ask "<intent or topic>"
Use returned notes as context, but keep project-local .agent/memory/semantic
as the source for agentic-stack lessons until the user explicitly asks to
promote or migrate them.
Save
Save one concise observation when the user gives a durable preference, cross-project convention, or decision that should survive across harnesses:
python3 .agent/tools/brain_bridge.py note "<one durable observation>"
Do not save secrets, credentials, or ephemeral task details.
MCP
To wire Brain as an MCP stdio server, inspect:
python3 .agent/tools/brain_bridge.py mcp-command
The expected command is brain serve --mcp.
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 · 60 lines · 1 tokens per session scan A afd4fcc24636
brain is a skill published in the GitHub repository codejunkie99/agentic-stack (2,241 stars, last pushed 25d ago), licensed Apache-2.0. It adds 1 tokens to every session and 361 once invoked, about $0.0000 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 2026-08-30.
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