phantom-wallet-mcp

phantom-wallet-mcp is a skill for Claude Code, Codex from phantom/phantom-agent-kit. It costs 41 tokens per session (479 once invoked), scanned A, a copy of phantom-wallet-mcp, MIT.

A connection between a coding agent and a user's Phantom cryptocurrency wallet across Solana, Ethereum, Bitcoin, and Sui. It can retrieve wallet addresses and handle supported signing, transfer, purchase, and message operations.

In plain words
What is it for?
Use it to read wallet addresses, sign transactions or messages, transfer Solana tokens, and obtain or optionally execute Solana token swap quotes.
Why use it?
It removes the need to manually switch between wallet screens and prepare blockchain operations outside the agent's workflow.

Skill for Claude CodeCodex

Part of the phantom-connect plugin — 8 skills, 2 agents, 2 MCP servers shipped together

Install

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.

agentmods
npx agentmods add skills/phantom/phantom-agent-kit/phantom-wallet-mcp
Any agent
npx skills add phantom/phantom-agent-kit --skill phantom-wallet-mcp
Clone the repo
git clone --depth 1 https://github.com/phantom/phantom-agent-kit

Made for: Claude Code, Codex.

Or install phantom-connect, the plugin that ships this one along with the rest of its 8 skills, 2 agents, 2 MCP servers.

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 phantom-wallet-mcp

README.md
[![agentmods](https://agentmods.dev/badge/skills/phantom/phantom-agent-kit/phantom-wallet-mcp.svg)](https://agentmods.dev/skills/phantom/phantom-agent-kit/phantom-wallet-mcp)
Your own site
<a href="https://agentmods.dev/skills/phantom/phantom-agent-kit/phantom-wallet-mcp"><img src="https://agentmods.dev/badge/skills/phantom/phantom-agent-kit/phantom-wallet-mcp.svg" alt="Measured on agentmods" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 479 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00041 $0.00479
Opus 5 $0.00020 $0.00239
Sonnet 5 $0.00008 $0.00096
Haiku 4.5 $0.00004 $0.00048

Measured 4d ago against content hash e4d1f24da79f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

phantom-wallet-mcp 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 4d 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 phantom-wallet-mcp — 0 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.

skills/phantom-wallet-mcp/SKILL.md · 54 lines

What it actually says

Phantom Wallet MCP

Use the phantom MCP server to interact with the user's Phantom wallet directly.

Available Tools

Tool Description
get_wallet_addresses Get blockchain addresses (Solana, Ethereum, Bitcoin, Sui) for the connected wallet
sign_transaction Sign a transaction (base64url for Solana, RLP hex for Ethereum)
transfer_tokens Transfer SOL or SPL tokens on Solana — builds, signs, and sends the transaction
buy_token Fetch Solana swap quotes from Phantom API; optionally sign and send
sign_message Sign a UTF-8 message with automatic chain-specific routing

Setup

The phantom MCP server requires a PHANTOM_APP_ID environment variable from Phantom Portal. On first use, it opens a browser for OAuth authentication via Google or Apple login.

Supported Networks

Chain Networks
Solana mainnet, devnet, testnet
Ethereum Mainnet, Sepolia, Polygon, Base, Arbitrum
Bitcoin Mainnet
Sui Mainnet, Testnet

Networks use CAIP-2 format (e.g., solana:mainnet, eip155:1).

Examples

Get wallet addresses

Ask the phantom MCP to retrieve the user's wallet addresses, then use them for transactions.

Transfer SOL

Use transfer_tokens to send SOL to a recipient address. The MCP handles transaction building, signing, and submission.

Sign a message

Use sign_message for wallet verification or authentication flows. The MCP routes to the correct chain based on the network parameter.

Important Notes

  • Sessions persist locally in ~/.phantom-mcp/session.json
  • This is preview software — use a separate wallet with minimal funds for testing
  • The MCP server runs via stdio transport (launched by npx -y @phantom/mcp-server)
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. 4d ago First seen · 54 lines · 41 tokens per session scan A e4d1f24da79f

Subscribe to this mod's changes

phantom-wallet-mcp is a skill published in the GitHub repository phantom/phantom-agent-kit (12 stars, last pushed 16d ago), licensed MIT. It adds 41 tokens to every session and 479 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to phantom-wallet-mcp, differing in 0 lines, and is treated as a copy.

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