Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/phantom/phantom-agent-kitWrote 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.
[](https://agentmods.dev/rules/phantom/phantom-agent-kit/solana-transaction-safety)<a href="https://agentmods.dev/rules/phantom/phantom-agent-kit/solana-transaction-safety"><img src="https://agentmods.dev/badge/rules/phantom/phantom-agent-kit/solana-transaction-safety/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.
<a href="https://agentmods.dev/rules/phantom/phantom-agent-kit/solana-transaction-safety"><img src="https://agentmods.dev/badge/rules/phantom/phantom-agent-kit/solana-transaction-safety.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00272 | $0.00272 |
| Opus 5.5 | $0.00109 | $0.00109 |
| Sonnet 5.5 | $0.00054 | $0.00054 |
| Haiku 4.5 | $0.00027 | $0.00027 |
Grade A, and why
solana-transaction-safety 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.
What it actually says
Solana Transaction Safety
Amount Conversion
- Always use
LAMPORTS_PER_SOLfrom@solana/web3.jsfor SOL-to-lamport conversion. Never hardcode1000000000or any other magic number.
Priority Fees
- For time-sensitive transactions, add priority fees using
ComputeBudgetProgram.setComputeUnitPrice()from@solana/web3.js. This helps ensure transactions are processed quickly during network congestion.
Transaction Verification
- Always verify transaction status after sending by checking the signature with
connection.getSignatureStatus()orconnection.confirmTransaction(). Do not assume a returned signature means the transaction succeeded.
Network Selection
- Use
https://api.devnet.solana.com(devnet) for testing and development. - Use
https://api.mainnet-beta.solana.com(mainnet-beta) for production. - Never test against mainnet with real funds during development.
Key Security
- Never expose private keys in code. Phantom handles all signing internally through its SDK. There is no need to access or manage private keys directly.
- Never ask users to input their seed phrase or private key.
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.
- 1mo ago First seen · 31 lines · 272 tokens per session scan A dda8df1f806c
solana-transaction-safety is a cursor rule published in the GitHub repository phantom/phantom-agent-kit (19 stars, last pushed 2mo ago), licensed MIT. It adds 272 tokens to every session, about $0.0011 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.
Other cursor rules, from other repositories
solana-integration-constraints
Constraints and requirements for Solana integration with MetaMask Connect — wallet adapter config, CAIP-2 IDs, network support per platform, RPC routing, and platform limitations.
zama-protocol-zama-solidity--setups-foundry
Detailed reference for foundry (zama-solidity skill).
cardano-mcp
These rules complement our main development collaboration rules, focusing specifically on the Model Context Protocol (MCP) server project with TypeScript. This project serves as a specialized RAG (Retrieval-Augmented Generation) gateway to existing Cardano resources, documentation, and tools to assist with dApp…
elizaos_v2_onchain_plugins
┌─────────────────┐ ┌──────────────────┐ ┌─────────────────┐ │ Wallet Provider│ │ Connection Mgmt │ │ Transaction Svc │ │ - Private Keys │───▶│ - RPC Endpoints │───▶│ - Tx Construction│ │ - Public Keys │ │ - Network Config │ │ - Fee Estimation│ │ - Signatures │ │ - Health Check │ │ - Broadcasting │ └─────────────────┘…
solana_core_architecture
┌─────────────────┐ ┌──────────────────┐ ┌─────────────────┐ │ Entry Point │ │ Instruction │ │ Account │ │ lib.rs │───▶│ Processing │───▶│ Validation │ │ │ │ │ │ │ │ - entrypoint! │ │ - Route dispatch │ │ - Owner checks │ │ - processinst │ │ - Deserialize │ │ - Data validate │.
stacks-development
Guidelines for Stacks blockchain development.