scuttlepay: Instructions file for Claude Code

CLAUDE.md

scuttlepay CLAUDE.md is an instructions file for Claude Code from jarrodwatts/scuttlepay. It costs 1,066 tokens per session, scanned A, original, MIT.

A set of coding instructions for ScuttlePay, a service that lets AI agents make controlled USDC purchases from Shopify stores and settle payments on a blockchain. It covers the Next.js app, database, commands, and end-to-end tests.

In plain words
What is it for?
Use it when changing the web app, shared packages, payment flow, PostgreSQL database, migrations, or end-to-end tests.
Why use it?
It gives coding agents the project's architecture, development commands, and database procedures in one place.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is jarrodwatts/scuttlepay's own configuration. It tells Claude Code how to work on scuttlepay itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything scuttlepay configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jarrodwatts/scuttlepay. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/jarrodwatts/scuttlepay/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/jarrodwatts/scuttlepay

Made for: Claude Code.

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Per session 1,066 This file is loaded in full into every session.
When invoked 1,066 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01066 $0.01066
Opus 5.5 $0.00426 $0.00426
Sonnet 5.5 $0.00213 $0.00213
Haiku 4.5 $0.00107 $0.00107

Measured 2mo ago against content hash c2a8fe99a313, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

scuttlepay 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.

CLAUDE.md · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 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.

What is ScuttlePay

Wallet-as-a-service for autonomous AI agents. Agents get API keys with spending policies, execute USDC purchases against Shopify storefronts, and settle payments on-chain via the x402 protocol (EIP-712/EIP-3009 TransferWithAuthorization).

Commands

pnpm dev              # Next.js dev server (Turbopack)
pnpm build            # Production build
pnpm check            # Lint + typecheck in one shot
pnpm lint             # ESLint only
pnpm typecheck        # tsc --noEmit only
pnpm format:check     # Prettier check
pnpm format:write     # Prettier fix

# Database (Drizzle + PostgreSQL)
pnpm db:generate      # Generate migration from schema changes
pnpm db:migrate       # Run pending migrations
pnpm db:push          # Push schema directly (dev only)
pnpm db:seed          # Seed database (reads .env.local)
pnpm db:studio        # Drizzle Studio GUI

# E2E
pnpm e2e              # Run e2e tests (reads .env)

Architecture

Monorepo (pnpm workspaces): root Next.js app + packages/shared + packages/mcp.

Stack

  • Next.js 15 (App Router) + React 19, Tailwind 4, shadcn/ui (Radix)
  • tRPC 11 + TanStack Query 5 for data fetching
  • Drizzle ORM + PostgreSQL (Vercel Postgres / Neon)
  • thirdweb SDK v5 for wallet management and auth (JWT from wallet signatures)
  • Zod for all input validation (shared schemas in packages/shared)

Path alias

~/* → ./src/*

Layered backend

src/server/api/routers/   → tRPC routers (thin: validate input, call service, map errors)
src/server/services/      → Domain logic (purchase flow, spending evaluation, payment signing)
src/server/lib/           → Infrastructure (thirdweb client, Shopify GraphQL, API key validation, USDC math)
src/server/db/schema/     → Drizzle table definitions (all prefixed scuttlepay_*)
src/server/auth/          → thirdweb Auth setup + cached user resolution

Read the full file on GitHub · 104 lines

Changes

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.

  1. 2mo ago First seen · 104 lines · 1,066 tokens per session scan A c2a8fe99a313

Subscribe to this mod's changes

scuttlepay CLAUDE.md is an instructions file published in the GitHub repository jarrodwatts/scuttlepay (6 stars, last pushed 8mo ago), licensed MIT. It adds 1,066 tokens to every session, about $0.0043 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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