solana-vault-standard: Agent for Claude Code

.claude/agents/unity-engineer.md

unity-engineer is an agent for Claude Code from solanabr/solana-vault-standard. It costs 86 tokens per session (6,157 once invoked), scanned A, a copy of unity-engineer, MIT.

A Unity and C# development specialist for games that use Solana, a blockchain platform. It helps build game systems and connect game features to wallets, digital assets, and blockchain transactions.

In plain words
What is it for?
Use it to implement game mechanics, wallet connections, NFT displays, transaction signing, real-time gameplay, user interfaces, and asynchronous C# code.
Why use it?
It brings Unity game development and Solana integration together when blockchain features make the code harder to organise.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is solanabr/solana-vault-standard's own configuration. It tells Claude Code how to work on solana-vault-standard 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 solana-vault-standard configures →

Reuse

Borrowing it

Nothing to install: this file belongs to solanabr/solana-vault-standard. 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/solanabr/solana-vault-standard/main/.claude/agents/unity-engineer.md
Clone the repo
git clone --depth 1 https://github.com/solanabr/solana-vault-standard

Made for: Claude Code.

Wrote 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.

agentmods badge for unity-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/solanabr/solana-vault-standard/unity-engineer/github.svg)](https://agentmods.dev/agents/solanabr/solana-vault-standard/unity-engineer)
Your own site
<a href="https://agentmods.dev/agents/solanabr/solana-vault-standard/unity-engineer"><img src="https://agentmods.dev/badge/agents/solanabr/solana-vault-standard/unity-engineer/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.

agentmods 80×15 button for unity-engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/solanabr/solana-vault-standard/unity-engineer"><img src="https://agentmods.dev/badge/agents/solanabr/solana-vault-standard/unity-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 86 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 6,157 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod 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 $0.00086 $0.06157
Opus 5.5 $0.00034 $0.02463
Sonnet 5.5 $0.00017 $0.01231
Haiku 4.5 $0.00009 $0.00616

Measured 1mo ago against content hash 3f99b6eb5c90, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

unity-engineer 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 1mo 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.

Origin

This is a copy

100% identical to unity-engineer — 1,104 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/agents/unity-engineer.md · 1,095 lines

How it starts

The opening of the file, as written. The whole thing — 1,095 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the unity-engineer, a Unity and C# specialist for Solana game development. You build game systems using Solana.Unity-SDK, handle wallet integration, NFT display, transaction signing, and real-time gameplay mechanics.

When to Use This Agent

Perfect for:

  • Implementing Unity game systems and mechanics
  • Wallet connection and management
  • NFT loading, display, and metadata handling
  • Transaction building and signing flows
  • UI/UX implementation for blockchain features
  • Real-time gameplay code
  • C# async patterns for blockchain
  • PlaySolana SDK integration (when targeting PSG1)

Delegate to:

  • game-architect for high-level design decisions
  • anchor-engineer for Solana program development
  • solana-frontend-engineer for web-based UI

Core Competencies

Area Expertise
Unity Fundamentals MonoBehaviours, ScriptableObjects, Input System, UI Toolkit
C# Patterns Async/await, events, dependency injection, SOLID
Solana.Unity-SDK Wallet adapters, RPC, transaction building, account deserialization
NFT Integration Metaplex, metadata loading, texture fetching
PlaySolana SDK PSG1 input, SvalGuard, PlayDex hooks (when targeting PSG1)
Testing Edit Mode, Play Mode, Unity Test Framework

Development Workflow

Build → Respond → Iterate

Operate in tight feedback loops with minimal token usage:

  1. Understand: Analyze minimum code required
  2. Change: Surgical edit, keep responses minimal
  3. Build: Verify compilation in Unity
  4. Test: Run relevant tests
  5. If Fails: Retry once if obvious, then STOP and ask

Read the full file on GitHub · 1,095 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. 1mo ago First seen · 1,095 lines · 86 tokens per session scan A 3f99b6eb5c90

Subscribe to this mod's changes

unity-engineer is an agent published in the GitHub repository solanabr/solana-vault-standard (24 stars, last pushed 6mo ago), licensed MIT. It adds 86 tokens to every session and 6,157 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to unity-engineer, differing in 1,104 lines, and is treated as a copy.

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