codebase-search

codebase-search is a skill for Claude Code from autohandai/community-skills. It costs 41 tokens per session (2,943 once invoked), scanned A, a copy of codebase-search, Apache-2.0.

A method for finding and tracing code across a large software project, including functions, classes, dependencies, and repeated patterns.

In plain words
What is it for?
It helps locate code, follow function calls, understand project structure, find examples, and assess the impact of a proposed change.
Why use it?
It reduces the time spent figuring out where a feature, bug, setting, or data change is implemented.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit It helps locate code, follow function calls, understand project structure, find examples, and assess the impact of a proposed change.

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Install with agentmods
npx agentmods add skills/autohandai/community-skills/codebase-search
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 autohandai/community-skills --skill codebase-search
Clone the repo
git clone --depth 1 https://github.com/autohandai/community-skills

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 codebase-search

README.md
[![agentmods](https://agentmods.dev/badge/skills/autohandai/community-skills/codebase-search/github.svg)](https://agentmods.dev/skills/autohandai/community-skills/codebase-search)
Your own site
<a href="https://agentmods.dev/skills/autohandai/community-skills/codebase-search"><img src="https://agentmods.dev/badge/skills/autohandai/community-skills/codebase-search/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 codebase-search

Your own site · 80×15
<a href="https://agentmods.dev/skills/autohandai/community-skills/codebase-search"><img src="https://agentmods.dev/badge/skills/autohandai/community-skills/codebase-search.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,943 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 95% copy Near-identical to another mod 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 $0.00041 $0.02943
Opus 5 $0.00020 $0.01471
Sonnet 5 $0.00008 $0.00589
Haiku 4.5 $0.00004 $0.00294

Measured 9d ago against content hash 70c1ee665783, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

codebase-search 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 9d 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

This is a copy

95% identical to codebase-search — 8 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

codebase-search/SKILL.md · 535 lines

How it starts

The opening of the file, as written. The whole thing — 535 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When to use this skill

  • Finding specific functions or classes
  • Tracing function calls and dependencies
  • Understanding code structure and architecture
  • Finding usage examples
  • Identifying code patterns
  • Locating bugs or issues
  • Code archaeology (understanding legacy code)
  • Impact analysis before changes

Instructions

Step 1: Understand what you're looking for

Feature implementation:

  • Where is feature X implemented?
  • How does feature Y work?
  • What files are involved in feature Z?

Bug location:

  • Where is this error coming from?
  • What code handles this case?
  • Where is this data being modified?

API usage:

  • How is this API used?
  • Where is this function called?
  • What are examples of using this?

Configuration:

  • Where are settings defined?
  • How is this configured?
  • What are the config options?

Step 2: Choose search strategy

Semantic search (for conceptual questions):

Use when: You understand what you're looking for conceptually
Examples:
- "How do we handle user authentication?"
- "Where is email validation implemented?"
- "How do we connect to the database?"

Benefits:
- Finds relevant code by meaning
- Works with unfamiliar codebases
- Good for exploratory searches

Grep (for exact text/patterns):

Use when: You know exact text or patterns
Examples:
- Function names: "def authenticate"
- Class names: "class UserManager"
- Error messages: "Invalid credentials"
- Specific strings: "API_KEY"

Benefits:
- Fast and precise
- Works with regex patterns
- Good for known terms

Glob (for file discovery):

Use when: You need to find files by pattern
Examples:
- "**/*.test.js" (all test files)
- "**/config*.yaml" (config files)
- "src/**/*Controller.py" (controllers)

Benefits:
- Quickly find files by type
- Discover file structure
- Locate related files

Step 3: Search workflow

1. Start broad, then narrow:

Step 1: Semantic search "How does authentication work?"
Result: Points to auth/ directory

Step 2: Grep in auth/ for specific function
Pattern: "def verify_token"
Result: Found in auth/jwt.py

Step 3: Read the file
File: auth/jwt.py
Result: Understand implementation

Read the full file on GitHub · 535 lines

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. 9d ago First seen · 535 lines · 41 tokens per session scan A 70c1ee665783

Subscribe to this mod's changes

codebase-search is a skill published in the GitHub repository autohandai/community-skills (11 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 41 tokens to every session and 2,943 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to codebase-search, differing in 8 lines, and is treated as a copy.

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