Borrowing it
Nothing to install: this file belongs to ForceInjection/OpenSpec-practise. 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/ForceInjection/OpenSpec-practise/main/CLAUDE.mdgit clone --depth 1 https://github.com/ForceInjection/OpenSpec-practiseWrote 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/forceinjection/openspec-practise/claude-md)<a href="https://agentmods.dev/instructions/forceinjection/openspec-practise/claude-md"><img src="https://agentmods.dev/badge/instructions/forceinjection/openspec-practise/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/forceinjection/openspec-practise/claude-md"><img src="https://agentmods.dev/badge/instructions/forceinjection/openspec-practise/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 | $0.02398 | $0.02398 |
| Opus 5.5 | $0.00959 | $0.00959 |
| Sonnet 5.5 | $0.00480 | $0.00480 |
| Haiku 4.5 | $0.00240 | $0.00240 |
Grade A, and why
OpenSpec-practise 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 4d 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 — 152 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
OpenSpec Practise is a learning/demonstration repository for Spec-Driven Development (SDD) using OpenSpec v1.16.0. A minimal e-commerce system is implemented twice — Node.js (v20+, zero npm dependencies, native http) and Python (FastAPI + Pydantic) — from the same OpenSpec specifications. The point is to demonstrate the full chain: intent → spec → code, with humans and AI sharing one source of truth.
Main specs cover 7 capabilities: cart-management, catalog-management, domain-model, error-handling, order-management, payment, and product-query. All changes are archived under openspec/changes/archive/; there is currently no active change.
Repository Layout
openspec/ # Root OpenSpec project (NOT under examples/)
config.yaml # Project context + schema rules injected into planning
specs/ # Main specs — the single source of truth
changes/ # Active changes (currently empty)
changes/archive/ # Archived changes: YYYY-MM-DD-<name>/
.claude/
commands/opsx/ # /opsx:explore|propose|update|apply|sync|archive
skills/ # openspec-* skills backing those commands
examples/
ecommerce-mini/ # Node.js implementation
ecommerce-mini-python/ # Python implementation
docs/ # Chinese documentation (manuals, guides, practice write-ups)
docs-en/ # English mirrors of docs/
README.md / README-en.md # Bilingual project overview
CHANGELOG.md # Per-OpenSpec-version upgrade and practice history
Common Commands
Node.js (examples/ecommerce-mini/)
npm test # all 18 tests (unit + integration + performance)
node --test __tests__/unit.spec.js # one suite
node --test --test-name-pattern="订单列表" __tests__/unit.spec.js # one test by name
node --test src/domain/logic.spec.js # standalone domain test (NOT part of npm test)
npm start # dev server, port 3000, in-memory
node examples/ecommerce-mini/src/http/server.prod.js # prod server, port 3002 — run from REPO ROOT
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.
- 4d ago Changed · +2 lines · +128 tokens per session 0f916f806333
- 18d ago Changed · +49 lines · +758 tokens per session a48af56c9224
- 2mo ago First seen · 101 lines · 1,512 tokens per session scan A d88f7fe0c924
OpenSpec-practise CLAUDE.md is an instructions file published in the GitHub repository ForceInjection/OpenSpec-practise (643 stars, last pushed 5d ago), licensed Apache-2.0. It adds 2,398 tokens to every session, about $0.0096 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 2026-08-30.
OpenSpec-practise CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| OpenSpec-practise CLAUDE.mdForceInjection/OpenSpec-practise | Instructions file | 643 | 5d ago | Apache-2.0 | A | 2,398 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |