Borrowing it
Nothing to install: this file belongs to cdknorow/coral. 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/cdknorow/coral/main/CLAUDE.mdgit clone --depth 1 https://github.com/cdknorow/coralWrote 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/cdknorow/coral/claude-md)<a href="https://agentmods.dev/instructions/cdknorow/coral/claude-md"><img src="https://agentmods.dev/badge/instructions/cdknorow/coral/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/cdknorow/coral/claude-md"><img src="https://agentmods.dev/badge/instructions/cdknorow/coral/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 | $0.02048 | $0.02048 |
| Opus 5.5 | $0.00819 | $0.00819 |
| Sonnet 5.5 | $0.00410 | $0.00410 |
| Haiku 4.5 | $0.00205 | $0.00205 |
Grade A, and why
coral 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 11d 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 — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md - Coral Go
Mission
The Go codebase (coral-go/) is Coral's implementation.
RULES:
- The Go codebase is the source of truth. Improve it freely.
- Only modify code under
coral-go/andtests/.
Testing
Go Unit Tests
cd coral-go && go test ./...
Project Structure
coral-go/ # The Go implementation
cmd/ # Entry points (coral, launch-coral, coral-board, coral-agent, coral-tray, coral-app, the hooks, mock-agent)
internal/ # Core packages
agent/ # Agent implementations (claude, gemini)
background/ # Background services (git poller, indexer, scheduler, etc.)
board/ # Message board store
config/ # Configuration
jsonl/ # JSONL log reader
license/ # EULA (terms acceptance)
pulse/ # Pulse event parser
ptymanager/ # PTY/tmux session management
server/ # HTTP server, routes, frontend assets
store/ # SQLite storage layer
tmux/ # Tmux client
go.mod / go.sum # Go module dependencies
tests/ # Suites outside the Go module
frontend/ # Dashboard tests: CDP browser suites (run_cdp_suites.mjs) and node tests (npm run test:cloud)
stress/ # Stress and workflow runners against an isolated server
release/ # Package checks the release workflow runs
latency/ # Opt-in dashboard latency-budget guard (epoch only)
Casks/ # Homebrew Cask definition
installers/ # Local build scripts per platform
tools/ # Build, release and maintenance scripts
licenses/ # Third-party license texts
assets/ # App icons and screenshots
Development Workflow
- Implement or fix features in
coral-go/. - Write or update Go unit tests.
- Run
go test ./...to ensure no regressions. - Build and manually verify as needed.
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.
- 11d ago Changed · -11 lines · -88 tokens per session b45d38919cc7
- 12d ago Changed a63cf98044b7
- 13d ago Changed · +3 lines · +238 tokens per session 8442c5ef8d2b
- 1mo ago First seen · 184 lines · 1,898 tokens per session scan A eb4a489de275
coral CLAUDE.md is an instructions file published in the GitHub repository cdknorow/coral (83 stars, last pushed 7d ago), licensed Apache-2.0. It adds 2,048 tokens to every session, about $0.0082 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).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.