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.
npx agentmods add skills/dinhanhthi/coding-friend/cf-optimizenpx skills add dinhanhthi/coding-friend --skill cf-optimizegit clone --depth 1 https://github.com/dinhanhthi/coding-friendWrote 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.
[](https://agentmods.dev/skills/dinhanhthi/coding-friend/cf-optimize)<a href="https://agentmods.dev/skills/dinhanhthi/coding-friend/cf-optimize"><img src="https://agentmods.dev/badge/skills/dinhanhthi/coding-friend/cf-optimize.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00093 | $0.02496 |
| Opus 5 | $0.00046 | $0.01248 |
| Sonnet 5 | $0.00019 | $0.00499 |
| Haiku 4.5 | $0.00009 | $0.00250 |
Grade A, and why
cf-optimize 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 3d 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.
How it starts
The opening of the file, as written. The whole thing — 211 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/cf-optimize
CLI Requirement: OPTIONAL — Uses the memory MCP from
coding-friend-clifor fast indexed search and storage. Without the CLI: falls back to grep overdocs/memory/and direct file writes. Full functionality preserved, slower memory recall. See CLI requirements.
Optimize: $ARGUMENTS
Purpose
Structured workflow for optimizing existing features, algorithms, or performance-critical code. Ensures every optimization is measured before and after so you know it actually helped.
Workflow
Step 0: Custom Guide
Custom guide — auto-loaded below (if the raw command shows instead of its output, run it yourself):
bash "<plugin-root>/lib/load-custom-guide.sh" cf-optimize
If output is not empty, integrate returned sections: ## Before → before first step, ## Rules → apply throughout, ## After → after final step.
Step 1: Detect Available Tools
Run quick availability checks for profiling/benchmarking tools. Store the result for use in later steps.
# Node.js / JavaScript
command -v clinic >/dev/null 2>&1 && echo "TOOL:clinic"
command -v 0x >/dev/null 2>&1 && echo "TOOL:0x"
npx lighthouse --version >/dev/null 2>&1 && echo "TOOL:lighthouse"
# General
command -v hyperfine >/dev/null 2>&1 && echo "TOOL:hyperfine"
command -v perf >/dev/null 2>&1 && echo "TOOL:perf"
# Web / Bundle
command -v webpack-bundle-analyzer >/dev/null 2>&1 && echo "TOOL:webpack-bundle-analyzer"
If no tools are found, note this and proceed in AI-only mode — all profiling will be done via code instrumentation and manual timing. Results in AI-only mode are estimates; flag this clearly in the final report.
Step 2: Understand the Target
- Read
$ARGUMENTSto identify what to optimize - If the target is vague, ask the user to clarify what "better" means:
- Faster execution time?
- Lower memory usage?
- Fewer API calls / network requests?
- Smaller bundle size?
- Better algorithmic complexity?
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.
- 3d ago First seen · 211 lines · 93 tokens per session scan A 30f8d44cbbe0
cf-optimize is a skill published in the GitHub repository dinhanhthi/coding-friend (3 stars, last pushed 4d ago), licensed MIT. It adds 93 tokens to every session and 2,496 once invoked, about $0.0005 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.
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