What is metaplex-agent?

A local MCP server for deploying AI agents on the Solana blockchain, with an EIP-8004 identity. It runs through an npm package and uses configurable Solana and fee settings.

Deploying AI agents on Solana and setting their network, confirmation, deployment-fee, and wallet options.

It provides a configured way to place an AI agent on Solana without building the deployment connection yourself. Running it requires a Solana secret key, RPC URL, and other environment variables.

metaplex-agent — MCP server by nirholas

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 mcp/nirholas/three.ws/metaplex-agent

Clone the repo

git clone --depth 1 https://github.com/nirholas/three.ws

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

metaplex-agent 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 3d 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.

mcp-bridge/server.json · 20 lines

What it actually says

{
  "metaplex-agent": {
    "command": "npx",
    "args": [
      "-y",
      "@three-ws/metaplex-agent-mcp"
    ],
    "env": {
      "SOLANA_SECRET_KEY": "",
      "SOLANA_RPC_URL": "",
      "METAPLEX_AGENT_NETWORK": "mainnet",
      "REQUIRE_CONFIRM": "true",
      "DEPLOY_FEE_SOL": "0.02",
      "DEPLOY_FEE_WALLET": "",
      "DEPLOY_FEE_ENABLED": "true",
      "THREE_HALF_PRICE_AT": "50000",
      "THREE_FREE_AT": "250000"
    }
  }
}

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.

3d ago First seen · 20 lines scan A 80bce532826e

Subscribe to this mod's changes

metaplex-agent is an MCP server published in the GitHub repository nirholas/three.ws (107 stars, last pushed 4d ago), licensed Apache-2.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. 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.

3d Building agents Web3 and blockchain ai-agent animation avatar blockchain character-studio

metaplex-agent

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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