presign-guard wallet

Name: presign-guard wallet
Author: Fizzl13

Community

MCP server by Fizzl13 · updated 2 days ago · ★ 0 · 1.2k downloads a week

Score 82

Agent wallet with limits: pays x402/MPP on Base, Solana, Tempo, XRPL and Algorand; phone approval. presign-guard wallet is a community project by Fizzl13, not verified by a company domain.

Install Add to Cursor Add to VS Code GitHub Website

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Works withClaude Code Claude Desktop Cursor Codex Gemini CLI VS Code Windsurf Antigravity CLI

Maintenance

Last commit 2 days ago

Licence

MIT: permissive, fine for commercial use

Quality

Clear description, published package or server URL, original repository

Security

No risky patterns in the files we checked

What you need

Setting	Needed	What it is
`AGENT_KEY`Environment variable, secret	Required	Private key of the agent's own wallet (a separate wallet holding only what the agent may spend)
`LIMIT_USDC_PER_TX`Environment variable	Optional	Most USDC per payment or transfer without asking you, e.g. 5
`LIMIT_USDC_PER_DAY`Environment variable	Optional	Daily USDC budget, e.g. 20
`TELEGRAM_BOT_TOKEN`Environment variable, secret	Optional	Telegram bot that asks you to approve anything over a limit
`TELEGRAM_CHAT_ID`Environment variable	Optional	Your Telegram chat id (approvals go only there)
`AC2_OWNER`Environment variable	Optional	Instead of Telegram: your Algorand address; approvals are signed in your own wallet over AC2 (needs the AC2 service, ac2-cli, paired with your wallet)
`WALLET_SERVER_URL`Environment variable	Optional	Instead of LIMIT_* and TELEGRAM_*: a wallet server keeping one budget for all your agents
`WALLET_SERVER_KEY`Environment variable, secret	Optional	The agent key (awk_…) from the wallet server's dashboard
`CHAIN`Environment variable	Optional	base (default), ethereum, optimism, arbitrum, polygon or bsc
`MAX_PAYMENT_USD`Environment variable	Optional	Most a single x402 API call may cost, in dollars (default 1)
`ALLOW_LIST`Environment variable	Optional	Optional: only pay or sign for these addresses (0x, XRPL r… or Algorand, comma-separated); anything else needs approval. Not with a wallet server
`PRESIGN_CREDIT_KEY`Environment variable, secret	Optional	Optional presign-guard credit key (pgc_…) to pay the $0.01 checks from prepaid credits
`RPC_URL`Environment variable	Optional	Optional RPC URL for the chain
`TEMPO`Environment variable	Optional	off to never pay MPP charges on Tempo (default on: paid in USDC.e on Tempo from the same address)
`TEMPO_CHAIN`Environment variable	Optional	4217 (Tempo, default) or 42431 (Moderato testnet)
`TEMPO_RPC_URL`Environment variable	Optional	Optional Tempo RPC URL
`MPP_SESSION_DEPOSIT`Environment variable	Optional	Optional: pay MPP sessions on Tempo; the USDC.e each channel deposit or top-up puts in (counted toward the USDC limits); then each call is a signed voucher
`SOLANA_PRIVATE_KEY`Environment variable, secret	Optional	Optional: the agent's own Solana secret key (base58 or solana-keygen byte array); pays x402 offers in USDC on Solana (checked by presign-guard, counted toward the USDC limits)
`SOLANA_NETWORK`Environment variable	Optional	mainnet (default) or devnet
`SOLANA_RPC_URL`Environment variable	Optional	Optional Solana RPC URL

From the publisher's entry in the official MCP Registry. Required settings are already in the install config below as placeholders.

Install presign-guard wallet

Built from the published package, never by AI

claude mcp add presign-guard-wallet -e AGENT_KEY=YOUR_AGENT_KEY -- npx -y presign-guard-wallet-mcp

Run in your terminal. Add --scope user to use it in every project.

Step-by-step: install presign-guard wallet in Claude Code

{
  "mcpServers": {
    "presign-guard-wallet": {
      "command": "npx",
      "args": [
        "-y",
        "presign-guard-wallet-mcp"
      ],
      "env": {
        "AGENT_KEY": "YOUR_AGENT_KEY"
      }
    }
  }
}

Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.

Step-by-step: install presign-guard wallet in Claude Desktop

{
  "mcpServers": {
    "presign-guard-wallet": {
      "command": "npx",
      "args": [
        "-y",
        "presign-guard-wallet-mcp"
      ],
      "env": {
        "AGENT_KEY": "YOUR_AGENT_KEY"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).

Step-by-step: install presign-guard wallet in Cursor

{
  "servers": {
    "presign-guard-wallet": {
      "command": "npx",
      "args": [
        "-y",
        "presign-guard-wallet-mcp"
      ],
      "env": {
        "AGENT_KEY": "YOUR_AGENT_KEY"
      }
    }
  }
}

Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".

Step-by-step: install presign-guard wallet in VS Code

codex mcp add presign-guard-wallet --env AGENT_KEY=YOUR_AGENT_KEY -- npx -y presign-guard-wallet-mcp

Step-by-step: install presign-guard wallet in Codex

{
  "mcpServers": {
    "presign-guard-wallet": {
      "command": "npx",
      "args": [
        "-y",
        "presign-guard-wallet-mcp"
      ],
      "env": {
        "AGENT_KEY": "YOUR_AGENT_KEY"
      }
    }
  }
}

Add to ~/.gemini/config/mcp_config.json (all projects) or .agents/mcp_config.json (this project).

Step-by-step: install presign-guard wallet in Antigravity CLI

gemini mcp add presign-guard-wallet npx -y presign-guard-wallet-mcp

Gemini CLI was replaced by Antigravity CLI in June 2026 and remains only for enterprise licences and paid API keys.

Step-by-step: install presign-guard wallet in Gemini CLI

MCP servers run with your permissions and can read what you give them access to. Some need an API key: check the README and add it under env in the presign-guard-wallet block.

Security check

No download-and-run commands, hidden instructions or signs of sending keys out were found.

Checked automatically: README.md. This looks for known risky patterns and is not a full audit. How grades work

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presign-guard wallet: common questions

How do I install presign-guard wallet?

In Claude Code run claude mcp add presign-guard-wallet -e AGENT_KEY=YOUR_AGENT_KEY -- npx -y presign-guard-wallet-mcp. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.

Is presign-guard wallet the official server?

presign-guard wallet is a community project by Fizzl13, not verified by a company domain.

Is presign-guard wallet free?

The code is published under the MIT licence. The service it connects to may have its own pricing.

Is presign-guard wallet safe to use?

It scores 82 of 100. Grades: maintenance A, licence A, quality C. Security check: grade A, no risky patterns found in the files checked. Review the code before you install. How grades work.

What are alternatives to presign-guard wallet?

Similar MCP servers: mcp, CCXT, Finance Toolkit, Yahoo Finance2.

Does presign-guard wallet work with ChatGPT?

Not directly. It runs locally, and ChatGPT only connects to remote servers with a URL. Use it in Claude Code, Claude Desktop, Cursor, VS Code or Codex.