Borrowing it
Nothing to install: this file belongs to dafthunk-com/dafthunk. 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/dafthunk-com/dafthunk/main/CLAUDE.mdgit clone --depth 1 https://github.com/dafthunk-com/dafthunkWrote 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/dafthunk-com/dafthunk/claude-md)<a href="https://agentmods.dev/instructions/dafthunk-com/dafthunk/claude-md"><img src="https://agentmods.dev/badge/instructions/dafthunk-com/dafthunk/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/dafthunk-com/dafthunk/claude-md"><img src="https://agentmods.dev/badge/instructions/dafthunk-com/dafthunk/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 | $0.01553 | $0.01553 |
| Opus 5.5 | $0.00621 | $0.00621 |
| Sonnet 5.5 | $0.00311 | $0.00311 |
| Haiku 4.5 | $0.00155 | $0.00155 |
Grade A, and why
dafthunk 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 2mo 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 — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Project Overview
Dafthunk is a visual workflow automation platform built on Cloudflare infrastructure (Workers, D1, R2, AI). Users create workflows by connecting 50+ node types in a visual editor (React Flow).
Monorepo structure (pnpm workspaces):
apps/api- Backend (Hono on Cloudflare Workers)apps/web- Frontend (React 19 + React Router v7 + Vite)packages/types- Shared TypeScript typespackages/utils- Shared utilities
Development Commands
Common commands
pnpm dev # Start all services
pnpm build # Build all packages and apps
pnpm typecheck # Type check all workspaces
pnpm lint # Lint and type check
pnpm check # Auto-fix linting + format
pnpm test # Run tests
# Workspace-specific (use --filter)
pnpm --filter '@dafthunk/api' dev # API dev server (port 3001)
pnpm --filter '@dafthunk/web' dev # Web dev server (port 3000)
pnpm --filter '@dafthunk/api' test:integration # Integration tests
# Database migrations
pnpm --filter '@dafthunk/api' db:migrate # Apply migrations locally
pnpm --filter '@dafthunk/api' db:generate # Generate new migrations
pnpm --filter '@dafthunk/api' db:prod:migrate # Apply to production
Architecture
Backend: API (apps/api/)
Routes (src/routes/)
- Organized by feature (workflows, executions, objects, etc.)
- Stateless: each request is self-contained
- Auth in
src/auth.ts(JWT + API Keys) - Multi-tenant: always scope by
organizationIdfrom context (c.get("organizationId")) - Validate with Zod +
@hono/zod-validator
Database (src/db/)
- D1 (SQLite) + Drizzle ORM
- Schema:
schema/index.ts - Queries:
queries.ts - Migrations:
migrations/(generate withdrizzle-kit) - Convention:
snake_casein SQL,camelCasein TypeScript
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.
- 2mo ago First seen · 178 lines · 1,553 tokens per session scan A 6073e60ddbe1
dafthunk CLAUDE.md is an instructions file published in the GitHub repository dafthunk-com/dafthunk (142 stars, last pushed 1mo ago), licensed MIT. It adds 1,553 tokens to every session, about $0.0062 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.
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