Alchemy Agentic Gateway

What it does

When your agent uses it

• Accessing Alchemy APIs for RPC calls
• Asset transfers
• Transaction simulation
• Alchemy-specific features

Example prompts

• “agentic gateway”
• “/alchemy-agentic-gateway”

Requirements

• Node.js
• A credential in ALCHEMY_API_KEY
• A credential in SIWE_TOKEN
• Compatibility (from SKILL.md): Requires network access. If $ALCHEMY_API_KEY is set, no additional setup needed. Otherwise requires Node.js (npx) and a wallet funded with USDC. Works across Claude.ai, Claude Code, and API.

Workflow steps

2 steps, taken from the first numbered list in SKILL.md.

1. 1Is ALCHEMY_API_KEY set in the environment?
2. 2Ask the user which payment protocol they prefer. Present this prompt exactly

What it can do on your machine

Read from SKILL.md and the folder at commit aa672ab. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • npx
  • curl
  • npm

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Hosts in commands or code, which the agent is likely to contact:

  • x402.alchemy.com
  • api.g.alchemy.com
  • mpp.alchemy.com
  • eth-mainnet.g.alchemy.com

  Also links to:

  • legal.alchemy.com
  • alchemy.com
  • dashboard.alchemy.com

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names these keys or tokens, usually read from environment variables:

  • ALCHEMY_API_KEY
  • SIWE_TOKEN

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Requires network access. If $ALCHEMY_API_KEY is set, no additional setup needed. Otherwise requires Node.js (npx) and a wallet funded with USDC. Works across Claude.ai, Claude Code, and API.

  From compatibility in the SKILL.md frontmatter.

Context cost

Alchemy Agentic Gateway loads about 2.1k tokens when it runs. Until then it costs about 99 tokens; SKILL.md has 747 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~99

When it runs · the whole SKILL.md, loaded when a task matches

~2.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NoteMentions a .env fileSKILL.md:149

  keys (`wallet.json`, `wallet-key.txt`, `.env`)

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from moonpay/skills at commit aa672ab, republished under its MIT licence (© moonpay). 747 words, ~2,060 tokens.

name

alchemy-agentic-gateway

description

Use when accessing Alchemy APIs for RPC calls, token balances, NFT metadata, asset transfers, transaction simulation, or Alchemy-specific features. Also use when the user mentions "SIWE", "SIWS", "x402", "MPP", "mppx", or "agentic gateway" — this skill covers wallet-based auth flows for Alchemy's x402 and MPP protocols on EVM (Ethereum, Base, Polygon) and SVM (Solana).

compatibility

Requires network access. If $ALCHEMY_API_KEY is set, no additional setup needed. Otherwise requires Node.js (npx) and a wallet funded with USDC. Works across Claude.ai, Claude Code, and API.

tags

alchemy, blockchain, evm, solana, rpc, x402, mpp, defi

license

MIT

metadata.author

alchemyplatform

metadata.version

2.0

curl -s -X POST "https://eth-mainnet.g.alchemy.com/v2/$ALCHEMY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"id":1,"jsonrpc":"2.0","method":"eth_blockNumber"}'

# Install x402 client
npm install -g @alchemy/x402 @x402/fetch

# Step 1: Generate a SIWE auth token for your EVM wallet
SIWE_TOKEN=$(npx @alchemy/x402 sign-siwe --private-key <key-or-path>)

# Step 2: Make a request (will return 402 on first call)
curl -s -X POST "https://x402.alchemy.com/eth-mainnet/v2" \
  -H "Authorization: SIWE $SIWE_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'

# Step 3: If 402 received, pay the challenge and retry with Payment-Signature
# npx @alchemy/x402 pay  (pass the PAYMENT-REQUIRED header value)

# Install mppx
npm install -g mppx

# Create an account (one-time setup)
mppx account create

# Fund the account
mppx account fund

# Make an authenticated + paid request (mppx handles auth and payment)
mppx "https://mpp.alchemy.com/eth-mainnet/v2" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'

# View account details
mppx account view

© moonpay, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/alchemy-agentic-gateway of moonpay/skills.

Open the folder on GitHubat commit aa672ab