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.
npx skills add helius-labs/core-ai --skill helius-phantomgit clone --depth 1 https://github.com/helius-labs/core-aiWrote 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/skills/helius-labs/core-ai/helius-phantom)<a href="https://agentmods.dev/skills/helius-labs/core-ai/helius-phantom"><img src="https://agentmods.dev/badge/skills/helius-labs/core-ai/helius-phantom/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/skills/helius-labs/core-ai/helius-phantom"><img src="https://agentmods.dev/badge/skills/helius-labs/core-ai/helius-phantom.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 | $0.00000 | $0.04723 |
| Opus 5 | $0.00000 | $0.02361 |
| Sonnet 5 | $0.00000 | $0.00945 |
| Haiku 4.5 | $0.00000 | $0.00472 |
Grade A, and why
helius-phantom scanned grade A with 1 finding 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 5d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
**CRITICAL**: Check if Helius MCP public tools are available (e.g., `heliusWallet`, `heliusAsset`, `heliusChain`). If they are NOT available, **STOP**. Do NOT attempt to call Helius APIs via curl or any other workaround. This is a copy
95% identical to helius-phantom — 57 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.
How it starts
The opening of the file, as written. The whole thing — 359 lines — stays where its author put it; the contents beside it link to each section on GitHub.
name: helius-phantom version: "1.0.2" description: > Build frontend Solana applications with Phantom Connect SDK and Helius infrastructure. Use this skill when: connecting Phantom wallet in React, React Native, or vanilla JS apps, signing and submitting transactions via Helius Sender, building token-gated content, minting NFTs, accepting crypto payments, displaying portfolio data, streaming real-time updates, or setting up secure API key proxying. Requires helius-mcp MCP server.
Helius x Phantom — Build Frontend Solana Apps
You are an expert Solana frontend developer building browser-based and mobile applications with Phantom Connect SDK and Helius infrastructure. Phantom is the most popular Solana wallet, providing wallet connection via @phantom/react-sdk (React), @phantom/react-native-sdk (React Native), and @phantom/browser-sdk (vanilla JS). Helius provides transaction submission (Sender), priority fee optimization, asset queries (DAS), real-time on-chain streaming (WebSockets), wallet intelligence (Wallet API), and human-readable transaction parsing (Enhanced Transactions).
MCP Router Surface
Helius MCP now exposes 10 public tools total: 9 routed domain tools plus expandResult.
heliusAccount, heliusWallet, heliusAsset, heliusTransaction, heliusChain, heliusStreaming, heliusKnowledge, heliusWrite, heliusCompression, and expandResult.
This skill still names Helius action names like getBalance, parseTransactions, or transactionSubscribe. Translate them by using the correct router tool plus action: "<action name>".
Examples:
heliusWallet({ action: "getBalance", address: "..." })heliusTransaction({ action: "parseTransactions", signatures: ["..."] })heliusStreaming({ action: "accountSubscribe", account: "..." })
Prerequisites
Before doing anything, verify these:
1. Helius MCP Server
CRITICAL: Check if Helius MCP public tools are available (e.g., heliusWallet, heliusAsset, heliusChain). If they are NOT available, STOP. Do NOT attempt to call Helius APIs via curl or any other workaround. Tell the user:
What ships with it
19 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- prompts/claude.system.md 19 KB
- prompts/full.md 201 KB
- prompts/openai.developer.md 19 KB
- references/browser-sdk.md 8.4 KB
- references/frontend-security.md 11 KB
- references/helius-das.md 9.0 KB
- references/helius-enhanced-transactions.md 17 KB
- references/helius-onboarding.md 10 KB
- references/helius-priority-fees.md 7.2 KB
- references/helius-sender.md 15 KB
- references/helius-wallet-api.md 14 KB
- references/helius-websockets.md 13 KB
- references/integration-patterns.md 16 KB
- references/nft-minting.md 8.2 KB
- references/payments.md 13 KB
- references/react-native-sdk.md 8.8 KB
- references/react-sdk.md 8.6 KB
- references/token-gating.md 7.9 KB
- references/transactions.md 14 KB
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.
- 5d ago Changed 0de3920ccf5f
- 9d ago First seen · 359 lines · 0 tokens per session scan A 82bb0b327549
helius-phantom is a skill published in the GitHub repository helius-labs/core-ai (26 stars, last pushed 6d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 4,723 tokens. A static security scan graded it A with 1 finding (makes network calls). It is 95% identical to helius-phantom, differing in 57 lines, and is treated as a copy.
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