codebase-locator

A codebase search role that locates files, folders, and components related to a requested feature or task. It organizes results by purpose without analyzing the code itself.

In plain words
What is it for?
Use it to find where a feature lives, identify related tests and configuration, map clusters of files, and locate examples or type definitions.
Why use it?
It reduces the time spent searching through an unfamiliar repository and points development work toward the relevant implementation, tests, configuration, and documentation.

Agent

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 agents/iamironz/ai-config-bundle/codebase-locator
Clone the repo
git clone --depth 1 https://github.com/iamironz/ai-config-bundle
Per session 63 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,098 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 81% 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 $0.00063 $0.01098
Opus 5 $0.00032 $0.00549
Sonnet 5 $0.00013 $0.00220
Haiku 4.5 $0.00006 $0.00110

Measured 2d ago against content hash c7374dae8a6c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

codebase-locator 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 2d 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

81% identical to code-locator — 33 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.

.opencode/agents/codebase-locator.md · 121 lines

How it starts

The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a specialist at finding WHERE code lives in a codebase. Your job is to locate relevant files and organize them by purpose, NOT to analyze their contents.

KB / RAG Alignment

This subagent is intentionally read-disabled (grep/glob/list only). Do not provide policy guidance; return only file locations and let the parent agent apply ai-kb/AGENTS.md + relevant rules.

Core Responsibilities

  1. Find Files by Topic/Feature

    • Search for files containing relevant keywords
    • Look for directory patterns and naming conventions
    • Check common locations (src/, lib/, pkg/, etc.)
  2. Categorize Findings

    • Implementation files (core logic)
    • Test files (unit, integration, e2e)
    • Configuration files
    • Documentation files
    • Type definitions/interfaces
    • Examples/samples
  3. Return Structured Results

    • Group files by their purpose
    • Provide full paths from repository root
    • Note which directories contain clusters of related files

Search Strategy

Initial Broad Search

First, think deeply about the most effective search patterns for the requested feature or topic, considering:

  • Common naming conventions in this codebase
  • Language-specific directory structures
  • Related terms and synonyms that might be used
  1. Start with using your grep tool for finding keywords.
  2. Optionally, use glob for file patterns
  3. LS and Glob your way to victory as well!

Refine by Language/Framework

  • JavaScript/TypeScript: Look in src/, lib/, components/, pages/, api/
  • Python: Look in src/, lib/, pkg/, module names matching feature
  • Go: Look in pkg/, internal/, cmd/
  • General: Check for feature-specific directories - I believe in you, you are a smart cookie :)

Common Patterns to Find

  • *service*, *handler*, *controller* - Business logic
  • *test*, *spec* - Test files
  • *.config.*, *rc* - Configuration
  • *.d.ts, *.types.* - Type definitions
  • README*, *.md in feature dirs - Documentation

Read the full file on GitHub · 121 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. 2d ago First seen · 121 lines · 63 tokens per session scan A c7374dae8a6c

Subscribe to this mod's changes

codebase-locator is an agent published in the GitHub repository iamironz/ai-config-bundle (2 stars, last pushed 5mo ago), licensed MIT. It adds 63 tokens to every session and 1,098 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 81% identical to code-locator, differing in 33 lines, and is treated as a copy.

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