agentrium: Agent for Claude Code

.claude/agents/code-explorer.md

code-explorer is an agent for Claude Code from talayash/agentrium. It costs 28 tokens per session (338 once invoked), scanned A, a copy of code-explorer, MIT.

An agent that studies an existing codebase by tracing how a feature starts, runs through the system, and finishes. It records the architecture, dependencies, important files, and existing coding patterns.

In plain words
What is it for?
Use it to investigate a feature, map its execution path, identify the layers it touches, and prepare documentation for new development.
Why use it?
It helps developers understand unfamiliar code before changing it, reducing the risk of duplicating code or breaking an unseen dependency.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is talayash/agentrium's own configuration. It tells Claude Code how to work on agentrium itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agentrium configures →

Reuse

Borrowing it

Nothing to install: this file belongs to talayash/agentrium. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/talayash/agentrium/master/.claude/agents/code-explorer.md
Clone the repo
git clone --depth 1 https://github.com/talayash/agentrium

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 code-explorer

README.md
[![agentmods](https://agentmods.dev/badge/agents/talayash/agentrium/code-explorer/github.svg)](https://agentmods.dev/agents/talayash/agentrium/code-explorer)
Your own site
<a href="https://agentmods.dev/agents/talayash/agentrium/code-explorer"><img src="https://agentmods.dev/badge/agents/talayash/agentrium/code-explorer/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 code-explorer

Your own site · 80×15
<a href="https://agentmods.dev/agents/talayash/agentrium/code-explorer"><img src="https://agentmods.dev/badge/agents/talayash/agentrium/code-explorer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 338 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 89% 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 $0.00028 $0.00338
Opus 5.5 $0.00011 $0.00135
Sonnet 5.5 $0.00006 $0.00068
Haiku 4.5 $0.00003 $0.00034

Measured 1mo ago against content hash 21cb9c2a8bbb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-explorer 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.

Origin

This is a copy

89% identical to code-explorer — 3 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.

.claude/agents/code-explorer.md · 70 lines

What it actually says

Code Explorer Agent

You deeply analyze codebases to understand how existing features work before new work begins.

Analysis Process

1. Entry Point Discovery

  • find the main entry points for the feature or area
  • trace from user action or external trigger through the stack

2. Execution Path Tracing

  • follow the call chain from entry to completion
  • note branching logic and async boundaries
  • map data transformations and error paths

3. Architecture Layer Mapping

  • identify which layers the code touches
  • understand how those layers communicate
  • note reusable boundaries and anti-patterns

4. Pattern Recognition

  • identify the patterns and abstractions already in use
  • note naming conventions and code organization principles

5. Dependency Documentation

  • map external libraries and services
  • map internal module dependencies
  • identify shared utilities worth reusing

Output Format

## Exploration: [Feature/Area Name]

### Entry Points
- [Entry point]: [How it is triggered]

### Execution Flow
1. [Step]
2. [Step]

### Architecture Insights
- [Pattern]: [Where and why it is used]

### Key Files
| File | Role | Importance |
|------|------|------------|

### Dependencies
- External: [...]
- Internal: [...]

### Recommendations for New Development
- Follow [...]
- Reuse [...]
- Avoid [...]
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 First seen · 70 lines · 28 tokens per session scan A 21cb9c2a8bbb

Subscribe to this mod's changes

code-explorer is an agent published in the GitHub repository talayash/agentrium (45 stars, last pushed 2d ago), licensed MIT. It adds 28 tokens to every session and 338 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 89% identical to code-explorer, differing in 3 lines, and is treated as a copy.