update

A project-knowledge updater that scans repository activity and refreshes BRAIN.md with current engineering information. It updates activity, expertise, work patterns, sprint context, and growth areas.

In plain words
What is it for?
Use it monthly or after major project changes to update repository metrics, summarize recent work, reassess expertise areas, and record current sprint context.
Why use it?
It prevents a manually maintained project overview from becoming outdated as repositories, branches, commit patterns, and priorities change.

Command

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.

agentmods
npx agentmods add commands/hrithik-gavankar/brainstack/update
Clone the repo
git clone --depth 1 https://github.com/Hrithik-Gavankar/brainstack
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 154 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00154
Opus 5 $0.00000 $0.00077
Sonnet 5 $0.00000 $0.00031
Haiku 4.5 $0.00000 $0.00015

Measured 2d ago against content hash b2eaac9fe91d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

update 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.

website/docs/commands/update.md · 34 lines

What it actually says

update

Refresh BRAIN.md with latest git data, patterns, and metrics.

Usage

engineer-brain update

What it does

  1. Scans all repos for the last 30 days
  2. Reads current BRAIN.md
  3. Updates every section with fresh data
  4. Writes the updated BRAIN.md
  5. Prints a change summary

Sections updated

  • Active Repositories (commit counts, last-active dates)
  • Expertise Map (reclassified from commit patterns)
  • Work Patterns (commit type distribution, velocity)
  • Current Sprint Context (active branches, achievements)
  • Growth Areas (progress check)

Monthly, or after major project changes.

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 · 34 lines · 0 tokens per session scan A b2eaac9fe91d

Subscribe to this mod's changes

update is a command published in the GitHub repository Hrithik-Gavankar/brainstack (5 stars, last pushed 12d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 154 tokens. 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 2026-08-31.