diary

diary is a command for Claude Code from joaquimscosta/arkhe-claude-plugins. It costs 16 tokens per session (1,012 once invoked), scanned A, original, MIT.

A command that records a development session's progress, decisions, current state, handoff details, and next priorities in a dated diary entry.

In plain words
What is it for?
It is for creating or updating a daily session note with completed work, important decisions, known issues, and follow-up tasks.
Why use it?
It preserves context between sessions so the next person or agent can see what happened and what remains.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the design-intent plugin — 4 skills, 5 commands, 3 agents shipped together

Good fit It is for creating or updating a daily session note with completed work, important decisions, known issues, and follow-up tasks.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/joaquimscosta/arkhe-claude-plugins/diary
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.

Clone the repo
git clone --depth 1 https://github.com/joaquimscosta/arkhe-claude-plugins

Made for: Claude Code.

Or install design-intent, the plugin that ships this one along with the rest of its 4 skills, 5 commands, 3 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for diary

README.md
[![agentmods](https://agentmods.dev/badge/commands/joaquimscosta/arkhe-claude-plugins/diary.svg)](https://agentmods.dev/commands/joaquimscosta/arkhe-claude-plugins/diary)
Your own site
<a href="https://agentmods.dev/commands/joaquimscosta/arkhe-claude-plugins/diary"><img src="https://agentmods.dev/badge/commands/joaquimscosta/arkhe-claude-plugins/diary.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,012 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00016 $0.01012
Opus 5 $0.00008 $0.00506
Sonnet 5 $0.00003 $0.00202
Haiku 4.5 $0.00002 $0.00101

Measured 8d ago against content hash d6292a57362e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

diary 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 8d 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.

plugins/design-intent/commands/diary.md · 147 lines

How it starts

The opening of the file, as written. The whole thing — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/diary

This command creates a session diary entry to document development progress, decisions, and handoff context.

Usage

/diary

Creates a new diary entry for the current date, or updates the existing entry if one already exists for today.

Process

1. Determine File Path

  • File naming: /design-intent/diary/session-YYYY-MM-DD.md (e.g., /design-intent/diary/session-2024-01-15.md)
  • Date format: Use current date in YYYY-MM-DD format
  • Check existing: If file already exists for today, update it instead of creating new

2. Gather Session Information

Before creating the entry, collect information about:

  • Session goals: What was planned for this session
  • Accomplishments: What was actually built or completed
  • Key decisions: Important choices made during implementation
  • Current state: Where the project stands now
  • Next priorities: What should happen in the next session
  • Known issues: Problems that aren't blocking but need attention

3. Create Diary Entry

Use the template from /design-intent/diary/session-template.md

4. Content Guidelines

What We Built Section

Focus on concrete outcomes:

  • ✅ "Built gallery component with 3-card responsive layout"
  • ✅ "Implemented user authentication flow with mock data"
  • ❌ "Worked on some components"
  • ❌ "Made progress on the frontend"
Key Implementation Details

Document decisions and reasoning:

  • Why specific approaches were chosen
  • What alternatives were considered
  • How constitution principles were applied
  • Trade-offs made for prototype goals
Current State

Be specific about status:

  • What functionality works end-to-end
  • What's partially implemented
  • What's blocked or needs attention
  • Any integration points established
Tomorrow's Priorities

Make priorities actionable:

  • ✅ "Add loading states to gallery cards"
  • ✅ "Implement search functionality for user dashboard"
  • ❌ "Continue working on UI"
  • ❌ "Fix various issues"

Read the full file on GitHub · 147 lines

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. 8d ago First seen · 147 lines · 16 tokens per session scan A d6292a57362e

Subscribe to this mod's changes

diary is a command published in the GitHub repository joaquimscosta/arkhe-claude-plugins (21 stars, last pushed 24d ago), licensed MIT. It adds 16 tokens to every session and 1,012 once invoked, about $0.0001 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.