Borrowing it
Nothing to install: this file belongs to anantadwi13/explorer. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/anantadwi13/explorer/main/CLAUDE.mdgit clone --depth 1 https://github.com/anantadwi13/explorerWrote 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.
[](https://agentmods.dev/instructions/anantadwi13/explorer/claude-md)<a href="https://agentmods.dev/instructions/anantadwi13/explorer/claude-md"><img src="https://agentmods.dev/badge/instructions/anantadwi13/explorer/claude-md/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.
<a href="https://agentmods.dev/instructions/anantadwi13/explorer/claude-md"><img src="https://agentmods.dev/badge/instructions/anantadwi13/explorer/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.02428 | $0.02428 |
| Opus 5.5 | $0.00971 | $0.00971 |
| Sonnet 5.5 | $0.00486 | $0.00486 |
| Haiku 4.5 | $0.00243 | $0.00243 |
Grade A, and why
explorer CLAUDE.md 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project
explorer is a single-binary local directory browser: a Go HTTP server with an embedded React+Vite SPA. Point it at a directory; it serves a read-only browser over HTTP with markdown/text/image preview and deep-linkable URLs.
Commands
make build # full build: web SPA → embed → Go binary (./explorer)
make web # SPA only (cd web && npm ci && npm run build)
make test # go test ./cmd/... ./internal/... (excludes web/)
make dev-server # build + run Go binary against ./testdata
make dev-web # Vite dev server on :5173, proxies /api /raw /assets to :8080
make run # full build then run against ./testdata
make clean # remove ./explorer and internal/server/ui/dist
make docker # build explorer:latest
# Single Go test
go test ./internal/server -run TestFileMarkdown -v
# SPA lint (no Go linter configured)
cd web && npm run lint
make build is required (not go build alone) — the Go binary uses //go:embed all:dist and serves an HTTP 404 fallback (the stock http.ServeFileFS response when dist/index.html is missing) if internal/server/ui/dist/ is empty.
The dev workflow is two-process: make dev-server (Go on :8080) + make dev-web (Vite on :5173). Vite proxies API/raw paths to the Go server.
Architecture
Single-binary embed
The React SPA builds to internal/server/ui/dist/ (configured in web/vite.config.ts via outDir: '../internal/server/ui/dist'). internal/server/ui/ui.go does //go:embed all:dist to bake it into the Go binary. The static handler (internal/server/static.go) serves exact file matches and falls back to index.html for SPA client-routes.
internal/server/ui/dist/ is committed to source control so module-proxy installs (go install / go run github.com/anantadwi13/explorer/cmd/explorer@latest) produce a working binary without Node. Any change under web/src/ requires running make web-commit (or make web + git add internal/server/ui/dist) in the same commit so the embedded SPA stays in sync with the source.
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.
- 2mo ago First seen · 90 lines · 2,428 tokens per session scan A beebf971ec69
explorer CLAUDE.md is an instructions file published in the GitHub repository anantadwi13/explorer (2 stars, last pushed 1mo ago), licensed MIT. It adds 2,428 tokens to every session, about $0.0097 per session on Opus 5.5. 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.