Borrowing it
Nothing to install: this file belongs to corezoid/simulator-ai-plugin. 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/corezoid/simulator-ai-plugin/main/CLAUDE.mdgit clone --depth 1 https://github.com/corezoid/simulator-ai-pluginWrote 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/corezoid/simulator-ai-plugin/claude-md)<a href="https://agentmods.dev/instructions/corezoid/simulator-ai-plugin/claude-md"><img src="https://agentmods.dev/badge/instructions/corezoid/simulator-ai-plugin/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/corezoid/simulator-ai-plugin/claude-md"><img src="https://agentmods.dev/badge/instructions/corezoid/simulator-ai-plugin/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 | $0.00953 | $0.00953 |
| Opus 5.5 | $0.00381 | $0.00381 |
| Sonnet 5.5 | $0.00191 | $0.00191 |
| Haiku 4.5 | $0.00095 | $0.00095 |
Grade A, and why
simulator-ai-plugin 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 19d 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 — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Guidance for Claude Code when working in the simulator-ai-plugin repository.
The canonical, tool-agnostic instructions live in
AGENTS.md— repo overview, layout, commands, conventions, and gotchas. Read it first. This file only adds Claude Code–specific notes; keep substantive guidance inAGENTS.mdto avoid drift.
Quick orientation
- What it is: an MCP plugin connecting the Simulator.Company platform to Claude — a Go
MCP server (
plugins/simulator/mcp-server/) exposing the REST API as tools, plus 6 skills (plugins/simulator/skills/). - Design:
docs/ARCHITECTURE.md. - Verify changes:
make build && make vetfrom the repo root (make lintis available — golangci-lint v2, advisory:gosecclean, style backlog open).
Claude Code–specific notes
- Skills. The
simulator*skills here are the ones surfaced as/simulator,/simulator-graph, etc. When editing a skill's behaviour, edit itsSKILL.md; if you change the frontmatter, regenerate discovery artifacts withmake discovery(don't hand-editpublic/). Write instructions in English and have Claude reply in the user's own language — never hardcode a non-English sentence for it to say. See the "Skill language" convention inAGENTS.mdfor the trilingual policy (en primary; uk/ru activation triggers and product aliases are the kept exceptions). $CLAUDE_PLUGIN_ROOT=plugins/simulator/. Skills load reference docs as$CLAUDE_PLUGIN_ROOT/docs/entities/*.md. Those files must stay underplugins/simulator/docs/(only the plugin dir is shipped on install). Contributor docs go in the repo-rootdocs/. Claude Code and Codex both resolve this exact token via text substitution at skill-load time; renaming it breaks doc loading on both hosts (anthropics/claude-code#48230, #47789, #44057). For AWS Kiro — which does no such substitution —install-kiro.shand the release-zip generator hard-copy the skills andsed-replace the token with the absolute plugin path at install time. MCP subprocesses are separate from skill loading: Codex does not exposeCLAUDE_PLUGIN_ROOTthere, so.mcp.jsonmust preserve the user'sPWDasSIMULATOR_WORK_DIRand resolve the installed plugin root separately.- MCP tools. When you add or rename a tool, update the MCP-tools table in the root
README.mdand §4 ofdocs/ARCHITECTURE.md. - Curated tools live in Go under
internal/tools/<domain>.go(declared as typedOperations), not generated from a spec. The drift gate (internal/tools/testdata/papi-openapi.json) validates them against the backend. - Don't hand-edit generated files:
public/*(usemake discovery). Refresh the drift spec from pong-server (yarn dump-openapi), don't write it by hand.
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.
- 19d ago Changed · +3 lines · +58 tokens per session 236752a1198d
- 1mo ago First seen · 55 lines · 895 tokens per session scan A e04fe5f6b2fb
simulator-ai-plugin CLAUDE.md is an instructions file published in the GitHub repository corezoid/simulator-ai-plugin (60 stars, last pushed yesterday), licensed MIT. It adds 953 tokens to every session, about $0.0038 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.
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.