Borrowing it
Nothing to install: this file belongs to kznr02/OpenTester. 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/kznr02/OpenTester/main/CLAUDE.mdgit clone --depth 1 https://github.com/kznr02/OpenTesterWrote 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/kznr02/opentester/claude-md)<a href="https://agentmods.dev/instructions/kznr02/opentester/claude-md"><img src="https://agentmods.dev/badge/instructions/kznr02/opentester/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/kznr02/opentester/claude-md"><img src="https://agentmods.dev/badge/instructions/kznr02/opentester/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 | $0.01473 | $0.01473 |
| Opus 5.5 | $0.00589 | $0.00589 |
| Sonnet 5.5 | $0.00295 | $0.00295 |
| Haiku 4.5 | $0.00147 | $0.00147 |
Grade A, and why
OpenTester CLAUDE.md scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
command: "curl ${vars.base_url}/api" How it starts
The opening of the file, as written. The whole thing — 170 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 Overview
OpenTester is an MCP-First testing execution infrastructure for AI coding tools. It provides a unified DSL format and MCP interface, enabling Agents to generate, execute, and manage test cases.
Architecture:
- AI Agent (Claude Code/Cursor) generates DSL test cases and analyzes failures
- OpenTester MCP Server validates DSL syntax and executes tests (CLI/GUI/TUI)
- Web UI (React) provides auxiliary observation and debugging (not required)
Common Commands
Backend Development
cd backend
# Install dependencies (requires Python 3.13+, uv recommended)
uv pip install -e ".[dev]"
# Start all services (API + MCP)
uv run opentester start
# Start services individually
uv run opentester api --port 8000 # FastAPI server only
uv run opentester mcp --port 8001 # MCP server only
# Other CLI commands
uv run opentester status # Check service status
uv run opentester stop # Stop services
uv run opentester doctor # Environment check
# Testing
pytest # Run all tests
pytest tests/test_control_flow.py # Run specific test
pytest -v --tb=short # Debug mode
pytest --cov=opentester --cov-report=html # With coverage
# Linting
ruff check opentester/ # Code linting
mypy opentester/ # Type checking
Frontend Development
cd frontend
# Install dependencies (requires Node.js 18+)
npm install
# Development
npm run dev # Start dev server (port 5173)
npm run build # Build for production
npm run lint # Run ESLint
Architecture
Backend Structure (backend/opentester/)
Entry Points:
cli.py- Typer-based CLI (opentestercommand). Handles start/stop/status/doctor commands, process management with PID filesmain.py- FastAPI application setup, CORS, router registration
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.
- 1mo ago First seen · 170 lines · 1,473 tokens per session scan A 67417901ce25
OpenTester CLAUDE.md is an instructions file published in the GitHub repository kznr02/OpenTester (29 stars, last pushed 7mo ago), licensed MIT. It adds 1,473 tokens to every session, about $0.0059 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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.