agentkit: Instructions file for Claude Code

CLAUDE.md

Project Overview

Monorepo for the Worldcoin AgentKit — a toolkit for building AI agents that integrate with World ID and World Chain.

• agentkit/ — Core TypeScript library (@worldcoin/agentkit). Handles signature verification, x402 payments, AgentBook lookups, and agent registration validation.
• cli/ — CLI tool (@worldcoin/agentkit-cli) for agent registration via World ID.
• contracts/ — Solidity smart contracts (AgentBook registry). Built with Foundry.
• skills/ — Claude AI integration skills for agentkit.

Dev Commands

# Install dependencies
bun install

# Build the library
bun run build:agentkit

# Run TypeScript tests (from agentkit/)
cd agentkit && bun test

# Run Solidity checks (from contracts/)
cd contracts && forge build && forge test -vvv

# Format code
npx prettier --write .

Pre-PR Checklist

CI only runs Solidity checks — TypeScript issues must be caught locally.

1. bun run build:agentkit — must compile cleanly
2. cd agentkit && bun test — all tests must pass
3. npx prettier --write . — format all files
4. If touching contracts: cd contracts && forge fmt && forge build && forge test -vvv

Code Style

Prettier handles formatting (config in root package.json), but know the conventions:

• Tabs for indentation, no semicolons, single quotes
• 120 character line width
• Trailing commas in ES5 positions
• Imports sorted descending via prettier-plugin-sort-imports-desc

Naming

• camelCase for functions and variables
• PascalCase for types and interfaces
• kebab-case for file names
• SCREAMING_SNAKE_CASE for constants

Exports

• Named exports only — no default exports
• Barrel file at agentkit/src/index.ts grouped by category (constants, types, server, chain utilities, etc.)
• New public exports must be added to the barrel file

TypeScript

• Strict mode is enabled — do not weaken it
• Use the type keyword for type-only imports: import type { Foo } from './bar'
• Zod schemas co-located with their types, derive types via z.infer<typeof Schema>
• Bun native test runner (bun:test) — not Jest, not Vitest