bots.st/wren-pre-sign-check
Wren Pre-sign Check
Pre-sign checks for transactions and text
2193 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 4
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://wren-presign-check.wrenonbase.workers.dev/mcp
What it can do
| Tool | What it says it does |
|---|---|
presign_check | Call before your agent signs anything. Send tx fields (to, data, value, chainId), or typedData (an eth_signTypedData_v4 payload), or untrusted text, with an optional wren-guard policy. Returns block, review or allow, the decoded call and every finding: unlimited approvals, permits, Permit2… |
presign_demo | Free. Runs one fixed example (an unlimited approval, setApprovalForAll, a never-expiring permit, an EIP-7702 delegation, an injected memo or a normal x402 payment) through the same checker, so you can see the report shape before paying for presign_check. |
screen_text | Call before your agent acts on untrusted text (a reply, DM, web page, tool output or memory). Returns safe, suspicious or malicious with the matched patterns, after decoding base64, hex, Morse, leetspeak, ROT13, reversed and hidden Unicode. Optional known: your own addresses, to flag poisoned… |
token_facts | Call before your agent approves, receives or sends a Base ERC-20. Returns code size, EIP-7702 delegation, name, symbol, decimals, supply, proxy and upgrade admin, owner or renounced, and which privileged functions the bytecode has (mint, pause, blocklist, fees, limits, trading switch, upgrade)… |
In its maker's words
Check a tx, EIP-712 payload, text or Base token before your agent signs. Paid per call over x402.
- Website
- wren-presign-check.wrenonbase.workers.dev
- Publisher
- claudeisgod
- Listed from
- the official MCP Registry as
io.github.claudeisgod/wren-presign-check - Version
- 1.4.0, updated 28 Oct 2026
- Kinds of work
- Security and trust, Crypto and web3, AI models and agent tools
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 2193 ms | |
| Answered | 1635 ms | |
| Answered | 333 ms |
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