Fastcode Search Agent Skill

by Dokhacgiakhoa

Native Node.js semantic search for Agent. No external dependencies.

435 tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

505

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI --skill fastcode-search

What comes with it

468 bytes besides the instruction

fastcode_config.example.json

The instruction itself

8 sections, as written by the author

FastCode Search (Native)

> Core Capability: Lightning-fast codebase navigation using local Node.js indexing.

> Zero Cost: Runs locally. No API calls.

🤖 Agent Instructions (MANDATORY)

Rule: BEFORE reading any file content to understand logic, you MUST use FastCode.

1. When to use?

User asks "Where is the login logic?"
You need to fix a bug but don't know the exact file.
You want to understand the project structure.

2. How to use?

Run the internal Node.js script. Do not ask user to install anything.

Step 1: Search

node cli/skills/fastcode.js search "your_query_here"

Step 2: Analyze Results

The script returns a JSON list of most relevant files.

Action: Read ONLY the top 1-3 files returned.
Benefit: Saves tokens (don't read the whole repo).

3. Maintenance (Auto-Index)

If search returns nothing or "Index not found", run indexing first:

node cli/skills/fastcode.js index

🛠️ For Humans (Optional)

You can also run this manually if you want:

node cli/skills/fastcode.js search "auth"

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How to use it

Copy the folder

Take dokhacgiakhoa/fastcode-search from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.