journal

A command that records a work session in a dated Markdown journal for the rem project. Each entry documents the goal, changes, technical lessons, and decisions.

In plain words
What is it for?
Use it at the end of a work session to append to today's journal or create the next numbered journal file when none exists.
Why use it?
It removes the need to create or update the correctly numbered daily journal file by hand. It also preserves failed approaches and important implementation details for later sessions.

Command for Claude Code

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/bro3886/rem/journal
Clone the repo
git clone --depth 1 https://github.com/BRO3886/rem

Made for: Claude Code.

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 387 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 $0.00387
Opus 5 $0.00000 $0.00193
Sonnet 5 $0.00000 $0.00077
Haiku 4.5 $0.00000 $0.00039

Measured yesterday against content hash c6396410de6a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

journal 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 yesterday.

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.

.claude/commands/journal.md · 50 lines

What it actually says

Write a journal entry for today's work session on the rem project.

Instructions

  1. Determine today's date (YYYY-MM-DD format)
  2. Check journals/ dir for an existing file matching today's date pattern *-<today's date>-journal.md
  3. If a file for today exists: Append a new entry AFTER the --- separator at the bottom. Add a new --- at the end of your entry.
  4. If no file for today exists: Create a new file with the next sequence number: <NNN>-<YYYY-MM-DD>-journal.md. Add --- at the end.

Entry Format

# Journal Entry <NNN> - <date> - <short title>

(or ## Session 2/3/etc if appending to existing file)

## Goal

<What was the objective this session?>

## What Changed

<Concrete list of what was built/fixed/refactored>

## Key Insights

<Technical learnings, gotchas discovered, things that failed and why, things that succeeded>

## Decisions Made

<Any architectural or design decisions and their rationale>

---

Rules

  • Be specific and technical - this is for future Claude sessions, not humans
  • Include code snippets for non-obvious patterns
  • Document what FAILED and why, not just successes
  • Keep it concise but complete - no fluff
  • Always end with --- separator for future appending

Post-Journal Housekeeping

After writing the journal entry, also update:

  • CLAUDE.md — Update implementation status, coverage numbers, integration test counts, and any new architecture/patterns added during the session.
  • Auto memory MEMORY.md — Update project status, coverage numbers, and add any new key patterns or architecture decisions discovered during the session.
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. yesterday First seen · 50 lines · 0 tokens per session scan A c6396410de6a

Subscribe to this mod's changes

journal is a command published in the GitHub repository BRO3886/rem (149 stars, last pushed 2mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 387 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 2026-08-30.