Borrowing it
Nothing to install: this file belongs to Codename-11/SubFrame. 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/Codename-11/SubFrame/main/CLAUDE.mdgit clone --depth 1 https://github.com/Codename-11/SubFrameWrote 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/codename-11/subframe/claude-md)<a href="https://agentmods.dev/instructions/codename-11/subframe/claude-md"><img src="https://agentmods.dev/badge/instructions/codename-11/subframe/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/codename-11/subframe/claude-md"><img src="https://agentmods.dev/badge/instructions/codename-11/subframe/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 | $0.05031 | $0.05031 |
| Opus 5.5 | $0.02012 | $0.02012 |
| Sonnet 5.5 | $0.01006 | $0.01006 |
| Haiku 4.5 | $0.00503 | $0.00503 |
Grade A, and why
SubFrame 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 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.
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 — 244 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SubFrame
Terminal-centric IDE for Claude Code. Enhances native AI tools — does not replace them.
Core Rule
Only do what the user asks. Do not refactor, restructure, or add features beyond the request. Present suggestions separately — never implement without approval.
Architecture
Electron app with two processes communicating over typed IPC (src/shared/ipcChannels.ts). The renderer uses a pluggable Transport interface (src/shared/transport.ts) — currently ElectronTransport, with WebSocketTransport planned for browser/mobile access (ADR-006).
| Layer | Entry Point | Purpose |
|---|---|---|
| Main (Node.js/TS) | src/main/index.ts |
PTY management, file I/O, IPC handlers, manager modules |
| Renderer (React/TS) | src/renderer/index.tsx |
React 19 + Zustand + TanStack Query, shadcn/ui, Tailwind CSS v4 |
| Shared | src/shared/*.ts |
Typed IPC channels, constants, templates, backlink utilities |
Tech Stack
React 19, TypeScript (strict), Zustand (state), TanStack Query (IPC caching), TanStack Table (sorting/filtering), shadcn/ui (components), Tailwind CSS v4, Framer Motion (animations), CodeMirror 6 (editor), esbuild (bundler).
Key Modules
Main process — each manager has init() + setupIPC():
ptyManager tasksManager pluginsManager claudeSessionsManager aiToolManager aiFilesManager settingsManager gitBranchesManager overviewManager agentStateManager skillsManager promptsManager updaterManager sessionSnapshotManager pipelineManager activityManager outputChannelManager onboardingManager popoutManager claudeUsageManager githubManager apiServerManager webServerManager workspace frameProject
Main utilities (no manager pattern): fileEditor (IPC file read/write) dialogs (native OS dialogs) menu (Electron application menu) promptLogger (prompt history logging) pty (PTY spawn helpers) ipcRouter (dual-registration IPC for Electron + WebSocket) eventBridge (broadcast fan-out to Electron window + WS clients) aiSessionManager (background AI session lifecycle — PTY spawn, prompt injection, result extraction) aiExecutionManager (per-tool CLI flag construction, invocation modes, interactive tool configs)
Shared utilities: taskMarkdownParser (parse/serialize task .md files with YAML frontmatter) pipelineWorkflowParser (YAML workflow parsing) pipelineStages (built-in stage handlers)
Shared types: themeTypes (theme tokens, presets, CSS mapping) activityTypes (activity stream types, IPC events) agentStateTypes (agent session/step types) subframeHealth (health check types) transport (Transport + TransportPlatform interfaces — pluggable IPC abstraction)
Shared helpers: backlinkUtils (CLAUDE.md/GEMINI.md backlink injection) claudeSettingsUtils (settings.json merge) projectInit (workspace init logic) logoSVG (inline SVG logo) frameConstants (version, paths) frameTemplates (file templates for init)
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 · 244 lines · 5,031 tokens per session scan A e940e7ee0a54
SubFrame CLAUDE.md is an instructions file published in the GitHub repository Codename-11/SubFrame (10 stars, last pushed yesterday), licensed MIT. It adds 5,031 tokens to every session, about $0.0201 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.
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