cf-ask

cf-ask is a skill for Claude Code from dinhanhthi/coding-friend. It costs 68 tokens per session (1,817 once invoked), scanned A, original, MIT.

A codebase question-and-answer skill that searches project files and stored documentation, then saves the answer to project memory.

In plain words
What is it for?
It helps answer focused questions about modules, definitions, data flows, and project decisions.
Why use it?
It reduces the time spent looking through files to understand how a codebase works.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Good fit It helps answer focused questions about modules, definitions, data flows, and project decisions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dinhanhthi/coding-friend/cf-ask
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.

Any agent
npx skills add dinhanhthi/coding-friend --skill cf-ask
Clone the repo
git clone --depth 1 https://github.com/dinhanhthi/coding-friend

Made for: Claude Code.

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 cf-ask

README.md
[![agentmods](https://agentmods.dev/badge/skills/dinhanhthi/coding-friend/cf-ask/github.svg)](https://agentmods.dev/skills/dinhanhthi/coding-friend/cf-ask)
Your own site
<a href="https://agentmods.dev/skills/dinhanhthi/coding-friend/cf-ask"><img src="https://agentmods.dev/badge/skills/dinhanhthi/coding-friend/cf-ask/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 cf-ask

Your own site · 80×15
<a href="https://agentmods.dev/skills/dinhanhthi/coding-friend/cf-ask"><img src="https://agentmods.dev/badge/skills/dinhanhthi/coding-friend/cf-ask.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,817 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 $0.00068 $0.01817
Opus 5.5 $0.00027 $0.00727
Sonnet 5.5 $0.00014 $0.00363
Haiku 4.5 $0.00007 $0.00182

Measured 1mo ago against content hash 6276c94bf67a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cf-ask 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.

plugin-antigravity/skills/cf-ask/SKILL.md · 164 lines

How it starts

The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/cf-ask

Answer the question: $ARGUMENTS

Purpose

Quick, focused Q&A about the codebase. Proactively explores code to find the answer, then saves the Q&A to project memory so it can be referenced later.

  • Unlike /cf-research: single focused answer, no multi-doc output
  • Unlike /cf-remember: proactively explores the codebase to answer vs extracting knowledge already in conversation

Output: {CF_DOCS_ROOT}/memory/{category}/{name}.md. Never use relative paths in write specs (nested git repos); always {CF_DOCS_ROOT} / absolute.

Workflow

Step 0: Custom Guide

bash "<plugin-root>/lib/load-custom-guide.sh" cf-ask

If the block above printed anything, apply only the ## Before, ## Rules, and ## After sections; if it shows the raw command instead of output, re-run that exact load-custom-guide.sh fence now.

Step 1: Parse the Question

  1. Read $ARGUMENTS as the question

  2. If no question provided, ask the user what they want to know

  3. Identify keywords and likely relevant areas (modules, features, patterns)

  4. Classify the question type — check if the question is a flow question. A flow question asks about how something works end-to-end, how components interact, or what happens when a process runs. Trigger words: "how does X work", "flow of", "lifecycle", "sequence", "process", "when X happens", "walk me through", "how are X connected", "what triggers", "what happens when", "pipeline", "chain". Non-flow questions (lookup/definition/pattern/why) do NOT trigger this path.

    Set IS_FLOW_QUESTION = true/false for use in Steps 3, 4, 5, and 6.

Step 2: Check Existing Memory (Memory Recall)

Before exploring the codebase, search existing memory docs.

Recall memory (see Verbs) with 2–3 keywords from the question: { "query": "<keywords>", "limit": 5 }; grep scope {CF_DOCS_ROOT}/memory/**/*.md, third tier = file content.

After finding matches:

Read the top 2–3 most relevant matched files before treating a hit as a direct answer.

Read the full file on GitHub · 164 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · -121 lines 6276c94bf67a
  2. 1mo ago First seen · 285 lines · 68 tokens per session scan A cf5c8b5320f3

Subscribe to this mod's changes

cf-ask is a skill published in the GitHub repository dinhanhthi/coding-friend (4 stars, last pushed 2d ago), licensed MIT. It adds 68 tokens to every session and 1,817 once invoked, about $0.0003 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.

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