What is deploy-onchain-agent?

A coding-agent skill for creating an AI agent identity on the Solana blockchain. It mints a Metaplex asset and registers an EIP-8004 identity in the Metaplex Agent Registry.

Use it to deploy an AI agent on-chain, check its wallet and SOL balance, build registration data offline, or read registry entries.

It removes the need to perform the minting and identity-registration steps separately. It also lets you inspect registered agents and estimate deployment cost.

deploy-onchain-agent — Skill for Claude Code 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.

Any agent

npx skills add nirholas/metaplex-agent-mcp --skill deploy-onchain-agent

Clone the repo

git clone --depth 1 https://github.com/nirholas/metaplex-agent-mcp

Made for: Claude Code.

Or install metaplex-agent, the plugin that ships this one along with the rest of its 1 skill, 1 MCP server.

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

[![agentmods](https://agentmods.dev/badge/skills/nirholas/metaplex-agent-mcp/deploy-onchain-agent/github.svg)](https://agentmods.dev/skills/nirholas/metaplex-agent-mcp/deploy-onchain-agent)

Your own site

<a href="https://agentmods.dev/skills/nirholas/metaplex-agent-mcp/deploy-onchain-agent"><img src="https://agentmods.dev/badge/skills/nirholas/metaplex-agent-mcp/deploy-onchain-agent/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/nirholas/metaplex-agent-mcp/deploy-onchain-agent"><img src="https://agentmods.dev/badge/skills/nirholas/metaplex-agent-mcp/deploy-onchain-agent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 846 The whole file, excluding the scripts and references it only reads on demand.

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	$0.00063	$0.00846
Opus 5.5	$0.00025	$0.00338
Sonnet 5.5	$0.00013	$0.00169
Haiku 4.5	$0.00006	$0.00085

Measured today against content hash 1e03c6f08a3f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

deploy-onchain-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 today.

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.

plugins/metaplex-agent/skills/deploy-onchain-agent/SKILL.md · 47 lines

How it starts

The opening of the file, as written. The whole thing — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Metaplex Agent Registry MCP

@three-ws/metaplex-agent-mcp (Node 20+) mints a Metaplex Core asset and registers an EIP-8004 identity for it in one flow, so the agent gets its own built-in on-chain wallet. The plugin's .mcp.json launches it with npx -y @three-ws/metaplex-agent-mcp over stdio.

Environment

Set these in the shell that starts Claude Code. All are optional.

SOLANA_SECRET_KEY: base58 key or JSON byte array for the minting wallet. Needed only for mint_onchain_agent and register_agent_identity. Never print it or write it to a file.
SOLANA_RPC_URL: HTTPS RPC endpoint (defaults to the public endpoint for the network).
METAPLEX_AGENT_NETWORK: mainnet (default) or devnet. Every tool also takes network.
REQUIRE_CONFIRM: default true. Broadcast tools only send when called with confirm: true.

Tools

Tool	Use
`agent_wallet`	An asset's built-in wallet, any address, or the configured signer, with live SOL balance.
`build_registration`	The EIP-8004 registration JSON and `data:` URI, fully offline.
`mint_onchain_agent`	Mint and register, signed by the configured key. Without `confirm: true` it returns a preview and broadcasts nothing.
`prepare_agent_mint`	The same mint for an external wallet (`wallet` param) to sign. Returns `txs_base64`.
`send_signed_transaction`	Broadcast wallet-signed transactions in order.
`register_agent_identity`	Enrol an already-minted Core asset (signer must be the asset authority).
`get_onchain_agent`	Read a registered agent: plugins, decoded metadata, identity PDA, wallet and balance.
`list_onchain_agents`	Recent registrations from the three.ws deployments feed (`all_chains: true` adds EVM).
`three_status`	Fee schedule, a wallet's $THREE balance and tier, and the buyback ledger.

Costs and spend gate

A mainnet deploy costs about 0.027 SOL (rent, network fees and a flat 0.02 SOL deploy fee paid in the same transaction). The fee is halved at 50,000 $THREE held and waived at 250,000. Devnet is free. Call three_status to price a wallet.

Read the full file on GitHub · 47 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.

today First seen · 47 lines · 63 tokens per session scan A 1e03c6f08a3f

Subscribe to this mod's changes

deploy-onchain-agent is a skill published in the GitHub repository nirholas/metaplex-agent-mcp (8 stars, last pushed today), licensed Apache-2.0. It adds 63 tokens to every session and 846 once invoked, about $0.0003 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 2026-11-11.

Web3 and blockchain agent-registry ai-agents eip-8004 metaplex solana x402

deploy-onchain-agent next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
deploy-onchain-agentnirholas/metaplex-agent-mcp	Skill	8	today	Apache-2.0	A	63	Claude Code
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