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100
MCP live MCP 2025-11-25 streamable-http

presign-guard

io.github.fizzl13/presign-guard

Pre-sign, token and approval checks for agents: green/orange/red for signatures, tokens, wallets.

Watch this dependency Share evidence report
Uptime
100.0%
5 direct probes · 30d
Response
2246ms
last probe
Tools
10
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://presign-guard.onrender.com/mcp
Score: 100/100
Handshake verified by our own probe.
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
10 tools, 0 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
10 items in total; 3 or more earns these points.
pass Describes itself 10/10
97 characters; more than 30 earns these points.

Tools · 10

presign_quick_check

Free: the green/orange/red verdict only, for a transaction, token approval, EIP-712 signature, XRP Ledger transaction (type xrpl) Algorand transaction (type algorand) or Stellar transaction (type stel…

token_quick_verdict

Free: the green/orange/red verdict and grade only, for a Solana or EVM token your agent is about to buy, hold or accept. Limited to 10 free calls per hour (shared with presign_quick_check). For the re…

injection_quick_check

Free: the green/orange/red verdict only, for a text your agent received (a web page, email, tool result, API answer or another agent's message, up to 8000 characters): does it try to make the agent ig…

presign_check

Paid ($0.01 via x402 in USDC on Base, Solana, Monad, Polygon, Arbitrum, Avalanche, Algorand or Stellar, in RLUSD on the XRP Ledger or in USD₮0 on X Layer): call this before you sign. Send the transact…

presign_check_explain

Paid ($0.03 via x402 in USDC on Base, Solana, Monad, Polygon, Arbitrum, Avalanche, Algorand or Stellar, in RLUSD on the XRP Ledger or in USD₮0 on X Layer): the same verdict and reason codes as presign…

token_verdict

Paid ($0.01 via x402 in USDC on Base, Solana, Monad, Polygon, Arbitrum, Avalanche, Algorand or Stellar, in RLUSD on the XRP Ledger or in USD₮0 on X Layer): call this before your agent buys, holds or a…

wallet_approvals

Paid ($0.02 via x402 in USDC on Base, Solana, Monad, Polygon, Arbitrum, Avalanche, Algorand or Stellar, in RLUSD on the XRP Ledger or in USD₮0 on X Layer): audit the open token approvals of a wallet o…

screen_wallet

Paid ($0.01 via x402 in USDC on Base, Solana, Monad, Polygon, Arbitrum, Avalanche, Algorand or Stellar, in RLUSD on the XRP Ledger or in USD₮0 on X Layer): call this before your agent pays an address,…

injection_check

Paid ($0.01 via x402 in USDC on Base, Solana, Monad, Polygon, Arbitrum, Avalanche, Algorand or Stellar, in RLUSD on the XRP Ledger or in USD₮0 on X Layer): call this before your agent acts on text it …

feedback

Report a bug, a missing feature or anything else about this service, in a structured way. Free. A person reads every report; nothing is run or changed automatically.

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://presign-guard.onrender.com/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "presign-guard": {
      "url": "https://presign-guard.onrender.com/mcp",
      "transport": "streamable-http"
    }
  }
}