Product
Capture the context behind the code, keep it organised and make it available to the people and agents doing the next piece of work.
01 · Resume
Resume with saved context, recent sessions and decisions instead of reconstructing everything from old conversations.
● contextbrain · resume remote=github.com/acme/checkout
# Checkout
## Current context
Card updates are mid-migration to Payment Elements.
## Recent sessions
6 Nov · Webhook signing moved to the new secret
4 Nov · Retry policy agreed, tests added
## Decisions
Payment retries · Webhook signing
02 · Decisions
Record what you chose, why you chose it and what follows from it. Link the decision to the project that needs it.
projects / checkout / decisions
Two endpoints shared one secret, so rotating it broke both.
Each endpoint gets its own signing secret, stored in the secrets manager.
Rotation is per endpoint. The runbook covers the order of steps.
03 · Runbooks
Keep repeatable procedures alongside your project knowledge, ready for a person or agent to read.
docs/runbooks/rotate-webhook-secret.md · 4 steps
04 · Search and links
Search across your Brain, inspect backlinks and explore the graph to follow related knowledge.
Payment retries
projects/checkout/decisions/payment-retries.md
Retry transient failures with backoff…
Stripe webhook runbook
docs/runbooks/stripe-webhooks.md
…if a payment event is retried, check the…
Session · 4 Nov
projects/checkout/sessions/2026-11-04.md
Agreed the retry policy and added tests…
05 · Web editing and history
Read and edit notes in the browser, review version history and resolve Git conflicts when they occur.
Edited on the web
You · Today 10:42
Record decision: payment retries
Claude Code · 4 Nov
Save session
Codex · 2 Nov
06 · Usage and freshness
Review usage and freshness signals to focus your documentation effort.
Connect a vault. Save the context worth keeping. Pick it up with your next agent.