slfg

slfg is a command for coding agents from Jerrylalala/compound-engineering. It costs 13 tokens per session (275 once invoked), scanned A, original, MIT.

An automated engineering workflow that plans a task, coordinates several coding agents, reviews the result, tests it in a browser, and records a final walkthrough.

In plain words
What is it for?
Use it to carry a feature from planning through implementation, review, browser testing, issue resolution, and a recorded final demonstration.
Why use it?
It organizes many development steps that are easy to forget when working alone, including planning, parallel review, testing, and follow-up fixes.

Command

Part of the compound-engineering plugin — 78 skills, 4 commands, 2 hooks shipped together

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/jerrylalala/compound-engineering/slfg
Clone the repo
git clone --depth 1 https://github.com/Jerrylalala/compound-engineering

Or install compound-engineering, the plugin that ships this one along with the rest of its 78 skills, 4 commands, 2 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 slfg

README.md
[![agentmods](https://agentmods.dev/badge/commands/jerrylalala/compound-engineering/slfg.svg)](https://agentmods.dev/commands/jerrylalala/compound-engineering/slfg)
Your own site
<a href="https://agentmods.dev/commands/jerrylalala/compound-engineering/slfg"><img src="https://agentmods.dev/badge/commands/jerrylalala/compound-engineering/slfg.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 275 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 $0.00013 $0.00275
Opus 5 $0.00006 $0.00138
Sonnet 5 $0.00003 $0.00055
Haiku 4.5 $0.00001 $0.00028

Measured 4d ago against content hash 8c150ed02789, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

slfg 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 4d 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:

  • slfg — 88% identical, 10 lines differ
plugins/compound-engineering/commands/slfg.md · 33 lines

What it actually says

Swarm-enabled LFG. Run these steps in order, parallelizing where indicated.

Sequential Phase

  1. /ralph-wiggum:ralph-loop "finish all slash commands" --completion-promise "DONE"
  2. /workflows:plan $ARGUMENTS
  3. /compound-engineering:deepen-plan
  4. /workflows:workUse swarm mode: Make a Task list and launch an army of agent swarm subagents to build the plan

Parallel Phase

After work completes, launch steps 5 and 6 as parallel swarm agents (both only need code to be written):

  1. /workflows:review — spawn as background Task agent
  2. /compound-engineering:test-browser — spawn as background Task agent

Wait for both to complete before continuing.

Finalize Phase

  1. /compound-engineering:resolve_todo_parallel — resolve any findings from the review
  2. /compound-engineering:feature-video — record the final walkthrough and add to PR
  3. Output <promise>DONE</promise> when video is in PR

Start with step 1 now.

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. 4d ago First seen · 33 lines · 13 tokens per session scan A 8c150ed02789

Subscribe to this mod's changes

slfg is a command published in the GitHub repository Jerrylalala/compound-engineering (5 stars, last pushed 3mo ago), licensed MIT. It adds 13 tokens to every session and 275 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 2026-08-31.