# Magicblock

Design, implement, and debug MagicBlock applications on Solana.

- Repository: https://github.com/internet-court/internet-court-skill (7050 stars)
- Category: Design
- License: see repository
- Last updated: 2026-10-26
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add internet-court/internet-court-skill --skill magicblock -g -a claude-code -y`
Codex: `npx skills add internet-court/internet-court-skill --skill magicblock -g -a codex -y`
Cursor: `npx skills add internet-court/internet-court-skill --skill magicblock -g -a cursor -y`
Gemini CLI: `npx skills add internet-court/internet-court-skill --skill magicblock -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add internet-court/internet-court-skill`

## Description

Design, implement, and debug MagicBlock applications on Solana. Covers Ephemeral Rollups with delegated state; ER/PER architecture and settlement; private payments and token flows; oracles and randomness; scheduling and temporary authority; security and local validation. Use for MagicBlock product selection, integration, cross-product design, or production troubleshooting.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# MagicBlock Development Skill

## Pair with the `solana-dev` skill

Use this skill for MagicBlock-specific concerns: ER/PER, delegation, oracles, Session Keys, cranks, VRF,
Magic Actions, eSPL, and private payments. For general Solana or Anchor work such as scaffolding, PDAs,
account layouts, SPL tokens, clients, wallets, or LiteSVM/Mollusk testing, also load `solana-dev`.

## Key Concepts

**Ephemeral Rollups** enable high-performance, low-latency transactions by locking a delegated
account on the base layer while an ER clone continues to execute under the account's original program
owner. They are useful for gaming, real-time apps, and fast transaction throughput.

**Ephemeral Accounts** are born, used, and closed only inside an ER. They are useful for temporary
high-frequency state, but they never commit to Solana and therefore cannot be the only copy of durable
ownership, balances, rewards, or settlement results.

**Delegation** temporarily assigns the base-layer account to the Delegation Program and clones it into
the ER with its original program owner. Normal program ownership, signer, authority, and account
constraints still apply on the ER; delegation status is a routing and lifecycle concern, not a new
application authorization rule.

**Delegation debugging invariant**: a properly delegated account looks owned by
the delegation program on base, owned by the original program on the ER endpoint
returned by router `getDelegationStatus`, and cloned into the ER with
`delegated=true`.

For the verified SDK v0.16.2 snapshot, use **MagicIntentBundleBuilder** to
schedule commit and commit-and-undelegate intents. Do not use the deprecated
free functions `commit_accounts` and `commit_and_undelegate_accounts`.

The rest: https://github.com/internet-court/internet-court-skill/blob/HEAD/vendored/magicblock/magicblock-dev/SKILL.md