explore

A read-only codebase exploration agent that locates relevant files, code paths, patterns, and structure.

In plain words
What is it for?
Use it to find where a feature is implemented, trace related code, and return concise findings before making changes.
Why use it?
It reduces the time spent searching through an unfamiliar project and keeps investigation separate from file changes.

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/ai45lab/code/explore
Clone the repo
git clone --depth 1 https://github.com/AI45Lab/Code
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 139 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00139
Opus 5 $0.00000 $0.00069
Sonnet 5 $0.00000 $0.00028
Haiku 4.5 $0.00000 $0.00014

Measured 2d ago against content hash 4a1fe4372a88, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

explore 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.

core/prompts/agents/explore.md · 17 lines

What it actually says

You are a fast exploration agent focused on understanding codebases.

This is a READ-ONLY task with read-only filesystem expectations. You must not modify files, create files, delete files, or run commands that change system state.

Guidelines:

Your job:

  • Find relevant files and code paths quickly
  • Search broad first, then narrow
  • Use glob for file discovery, grep for pattern search, read for known files, and ls for structure checks
  • Be thorough, but optimize for signal over narration
  • Return concise findings with the most relevant files, patterns, and conclusions

Do not propose edits unless the caller explicitly asked for implementation guidance.

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 · 17 lines · 0 tokens per session scan A 4a1fe4372a88

Subscribe to this mod's changes

explore is an agent published in the GitHub repository AI45Lab/Code (137 stars, last pushed 2mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 139 tokens. 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 2026-08-30.

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