fettle: Command for Claude Code

.github/prompts/fettle-worklog.prompt.md

fettle-worklog is a command for Claude Code, GitHub Copilot from MilindGaharwar/fettle. It costs 12 tokens per session (417 once invoked), scanned A, original, Apache-2.0.

A command for keeping daily Markdown worklogs in the `.fettle/worklog/` folder. It can create or open today’s entry and show completed work from the last seven days.

In plain words
What is it for?
Use it to start a daily worklog, review recent completed tasks, and record work suggested from changed files, commits, and decisions.
Why use it?
It keeps session results, decisions, risks, and next steps in one dated place instead of relying on memory or scattered notes.

Command for Claude CodeGitHub Copilot

Written for Claude Code and GitHub Copilot: argument-hint in frontmatter, but also a Copilot chat mode or prompt.

This is MilindGaharwar/fettle's own configuration. It tells Claude Code and GitHub Copilot how to work on fettle itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything fettle configures →

Part of the fettle plugin — 34 commands, 4 hooks shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to MilindGaharwar/fettle. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/MilindGaharwar/fettle/main/.github/prompts/fettle-worklog.prompt.md
Clone the repo
git clone --depth 1 https://github.com/MilindGaharwar/fettle

Made for: Claude Code, GitHub Copilot.

Or install fettle, the plugin that ships this one along with the rest of its 34 commands, 4 hooks.

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 fettle-worklog

README.md
[![agentmods](https://agentmods.dev/badge/commands/milindgaharwar/fettle/fettle-worklog/github.svg)](https://agentmods.dev/commands/milindgaharwar/fettle/fettle-worklog)
Your own site
<a href="https://agentmods.dev/commands/milindgaharwar/fettle/fettle-worklog"><img src="https://agentmods.dev/badge/commands/milindgaharwar/fettle/fettle-worklog/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fettle-worklog

Your own site · 80×15
<a href="https://agentmods.dev/commands/milindgaharwar/fettle/fettle-worklog"><img src="https://agentmods.dev/badge/commands/milindgaharwar/fettle/fettle-worklog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 417 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 $0.00012 $0.00417
Opus 5.5 $0.00005 $0.00167
Sonnet 5.5 $0.00002 $0.00083
Haiku 4.5 $0.00001 $0.00042

Measured 1mo ago against content hash 31ab1fbdff51, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fettle-worklog 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 1mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • worklog — 92% identical, 7 lines differ
.github/prompts/fettle-worklog.prompt.md · 56 lines

What it actually says

Manage the daily worklog at .fettle/worklog/YYYY-MM-DD.md.

Procedure

  1. Parse arguments. Default action is "today" (show or create today's entry).

    • view — show last 7 days of completed items
    • create — create today's template if missing
    • today — open today's entry (create if needed)
  2. For "view": Read the last 7 files in .fettle/worklog/ (named YYYY-MM-DD.md, so lexical order is date order) and present their "Completed" sections.

  3. For "create" or "today":

    • Check if .fettle/worklog/YYYY-MM-DD.md exists
    • If not, create the template
    • Read and present the file to the user
    • Offer to help fill in the "Completed" section from this session's work
  4. Auto-populate from session context:

    • Review files modified this session
    • Review commits made
    • Review decisions discussed
    • Suggest entries for the "Completed" and "Decisions" sections

Template

# Worklog: YYYY-MM-DD

## Completed
- [what shipped or was accomplished]

## Decisions
- [key choices made and why]

## Blockers / Risks
- None (or describe blockers)

## Next Actions
- [what carries forward to tomorrow]

Notes

  • The worklog gate (Stop hook) advisories if no entry exists for today
  • Enable enforcement: [gates.worklog] enabled = true in .fettle.toml
  • Worklogs are gitignored by default (in .fettle/)
  • To track in git: add .fettle/worklog/ to your repo
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. 1mo ago Changed · +2 lines · +5 tokens per session 31ab1fbdff51
  2. 1mo ago First seen · 54 lines · 7 tokens per session scan A b536b0cd62a1

Subscribe to this mod's changes

fettle-worklog is a command published in the GitHub repository MilindGaharwar/fettle (4 stars, last pushed yesterday), licensed Apache-2.0. It adds 12 tokens to every session and 417 once invoked, about $0.0000 per session on Opus 5.5. 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 2026-08-31.