What is builderz-solana-dapp-scaffold CLAUDE.md?

Development instructions for Solana programs, which are blockchain applications, covering supported frameworks, client languages, testing tools, local development, and required modern package versions.

Useful for creating or changing Solana programs and clients with Anchor, native Rust tools, TypeScript, Python, Mollusk, LiteSVM, Surfpool, or fuzz testing.

They help an AI coding assistant avoid deprecated Solana libraries and choose compatible tools for building and testing programs.

How builderz-labs/builderz-solana-dapp-scaffold configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to builderz-labs/builderz-solana-dapp-scaffold. 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/builderz-labs/builderz-solana-dapp-scaffold/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/builderz-labs/builderz-solana-dapp-scaffold

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.

README.md

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Your own site

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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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/builderz-labs/builderz-solana-dapp-scaffold/claude-md"><img src="https://agentmods.dev/badge/instructions/builderz-labs/builderz-solana-dapp-scaffold/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 5,043 This file is loaded in full into every session.

When invoked 5,043 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.

Model	Per session	Once invoked
Fable 5.1	$0.05043	$0.05043
Opus 5.5	$0.02017	$0.02017
Sonnet 5.5	$0.01009	$0.01009
Haiku 4.5	$0.00504	$0.00504

Measured 2mo ago against content hash 43ee026edd25, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

builderz-solana-dapp-scaffold 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 · 757 lines

How it starts

The opening of the file, as written. The whole thing — 757 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Solana Development Rules

This file configures AI coding assistants for Solana program development. Follow these rules to produce secure, optimized, and correct code.

Modern Tooling (2025)

USE THESE - NOT OUTDATED ALTERNATIVES:

Category	Modern (Use This)	Outdated (Avoid)
Program SDK	`pinocchio`, `solana-program` 2.x	`solana-program` 1.x
Framework	Anchor 0.32+, Steel	Anchor < 0.30
Unit Testing	Mollusk, LiteSVM	`solana-program-test` alone
Local Dev	Surfpool	`solana-test-validator` alone
Client SDK	`@solana/kit` (web3.js 2.0)	`@solana/web3.js` 1.x
Fuzz Testing	Trident	None

Stack Configuration

Uncomment and configure based on your project:

# Framework: anchor | native | pinocchio | steel
# Client: typescript (@solana/kit) | rust | python
# Testing: mollusk | litesvm | trident | bankrun
# Local: surfpool | solana-test-validator

Critical Rules

NEVER

NEVER use deprecated crates:
- solana-program < 2.0 → use solana-program 2.x or pinocchio
- solana-sdk < 2.0 → use solana-sdk 2.x
- spl-token < 5.0 → use spl-token 5.x or spl-token-2022
- @solana/web3.js 1.x → use @solana/kit (web3.js 2.0)
NEVER deploy to mainnet without explicit user confirmation - always ask first

NEVER use unchecked arithmetic:

// WRONG
let total = amount_a + amount_b;

// CORRECT
let total = amount_a.checked_add(amount_b).ok_or(ErrorCode::Overflow)?;

NEVER skip account validation - every account must be validated for owner, signer status, and PDA derivation
NEVER hardcode keypairs, private keys, or RPC endpoints
NEVER use unwrap() in on-chain program code - use proper error handling
NEVER assume account data layout - always deserialize explicitly

ALWAYS

ALWAYS verify account ownership before reading/writing:

if *account.owner != expected_program_id {
    return Err(ProgramError::IncorrectProgramId);
}

Read the full file on GitHub · 757 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.

2mo ago First seen · 757 lines · 5,043 tokens per session scan A 43ee026edd25

Subscribe to this mod's changes

builderz-solana-dapp-scaffold CLAUDE.md is an instructions file published in the GitHub repository builderz-labs/builderz-solana-dapp-scaffold (59 stars, last pushed 11d ago), licensed Apache-2.0. It adds 5,043 tokens to every session, about $0.0202 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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builderz-solana-dapp-scaffold: Instructions file for Claude Code