name: gbrain description: Search and write the company knowledge brain. Use for any question about the org, people, projects, decisions, or history, and to persist durable knowledge beyond this scope's notebook.

gbrain — the company brain

This sandbox has the gbrain CLI connected (thin-client) to the org's central brain. It is the deep, indexed, cross-source memory: org docs, shared channel knowledge, and every agent's durable notes. Your scope's own notebook stays the fast per-turn memory; the brain is where knowledge outlives a scope and becomes searchable by everyone entitled to it.

First-run setup (once per sandbox — skip if `gbrain remote doctor` passes)

Your scope's brain credentials arrive via the deployment's secret handoff (keychain entry or one-time secret drop named gbrain). Then:

gbrain init --mcp-only \
  --issuer-url "https://brain.<org>.com" \
  --mcp-url "https://brain.<org>.com/mcp" \
  --oauth-client-id "<client id from the handoff>" \
  --oauth-client-secret "<client secret from the handoff>"
gbrain whoami   # must succeed before using any other command

Pass the secret with --oauth-client-secret, not via GBRAIN_REMOTE_CLIENT_SECRET: an env-sourced secret is deliberately NOT written to ~/.gbrain/config.json, so every later command would fail with "No client_secret available" once the variable is out of scope. The flag persists it to the config file on this sandbox's durable disk, which is what the tool's credential capture expects.

Do not run gbrain remote doctor — it needs admin scope, which your client does not have (by design). gbrain whoami is the read-scope health check.

Reading (do this liberally)

gbrain search "who decided X and why"     # hybrid semantic + keyword search
gbrain get <slug>                          # read one page
gbrain query "question" --json             # search tuned for agent consumption

You can read: the shared agent-memory source, org read-only sources (wiki, handbook), and everything under them. Reads are isolation-enforced server-side; you only ever see sources your client is entitled to.

Writing (durable knowledge only, under YOUR prefixes)

Your client is write-fenced to slug prefixes — your own namespace plus the channels you belong to. Writes outside them are rejected server-side.

# personal durable memory (your namespace):
gbrain put emp-<your-slug>/people/jane-example --content "..."

# shared channel knowledge (channels you are in):
gbrain put chan-eng/decisions/2026-08-database-choice --content "..."

Conventions:

Write conclusions and durable facts, not chat transcripts. One page per entity/decision/topic; update the page rather than appending near-duplicates.
Markdown with YAML frontmatter; the brain chunks, embeds, and links it.
Cross-reference liberally: gbrain link <from> <to> (from must be in your namespace; linking TO any readable page is fine).
When you learn something channel-relevant in personal work, mirror the conclusion into the channel prefix with a (said in <where>) provenance note.

When to reach for the brain

Any question about the org, a person, a project, a decision, or history → gbrain search FIRST, then answer.
You produced knowledge with value beyond this conversation → gbrain put.
Something looks wrong (auth errors, empty results you don't expect) → gbrain whoami to confirm which client and scopes you're using, and report its output.