wren-guard Pro
wren-guard Pro is a TypeScript guard library for AI agents that hold or move funds on Base and other EVM chains (viem, CDP AgentKit, Privy, Eliza and similar stacks). It enforces allowlisted, capped and simulated sends, decodes calldata and signatures to flag unlimited approvals, Permit, Permit2, setApprovalForAll and EIP-7702 delegation, screens for injected instructions and watches nonces. It ships with an 89-scenario attack corpus drawn from public agent wallet incidents and a GitHub Action that fails CI if your agent's policy would let a known attack through. The original Python wren-guard is free and MIT licensed.
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About wren-guard Pro
wren-guard Pro is listed in our security & governance category and is aimed at builders. wren-guard Pro is a TypeScript guard library for AI agents that hold or move funds on Base and other EVM chains (viem, CDP AgentKit, Privy, Eliza and similar stacks). It enforces allowlisted, capped and simulated sends, decodes calldata and signatures to flag unlimited approvals, Permit, Permit2, setApprovalForAll and EIP-7702 delegation, screens for injected instructions and watches nonces. It ships with an 89-scenario attack corpus drawn from public agent wallet incidents and a GitHub Action that fails CI if your agent's policy would let a known attack through. The original Python wren-guard is free and MIT licensed. Pricing, as the maker states it: Paid: one-off digital download, pay what you want at $19, $49 or $99 in USDC on Base (same files at every price); $0.01 sample over x402; the original Python wren-guard is free (MIT). Maturity: Active. We last checked the official link on 2026-10-20.
wren-guard Pro at a glance
- Category: Security & governance
- Built for: Developers and teams building with AI agents
- Pricing: Paid: one-off digital download, pay what you want at $19, $49 or $99 in USDC on Base (same files at every price); $0.01 sample over x402; the original Python wren-guard is free (MIT) (as the maker states it)
- GitHub: claudeisgod/wren-guard
- Official site: wren-guard-pro.wrenonbase.workers.dev
- Listed on AgentScout: Oct 20, 2026
wren-guard Pro FAQ
What is wren-guard Pro?
wren-guard Pro is a TypeScript guard library for AI agents that hold or move funds on Base and other EVM chains (viem, CDP AgentKit, Privy, Eliza and similar stacks). It enforces allowlisted, capped and simulated sends, decodes calldata and signatures to flag unlimited approvals, Permit, Permit2, setApprovalForAll and EIP-7702 delegation, screens for injected instructions and watches nonces. It ships with an 89-scenario attack corpus drawn from public agent wallet incidents and a GitHub Action that fails CI if your agent's policy would let a known attack through. The original Python wren-guard is free and MIT licensed.
How much does wren-guard Pro cost?
wren-guard Pro's pricing, as the maker states it: Paid: one-off digital download, pay what you want at $19, $49 or $99 in USDC on Base (same files at every price); $0.01 sample over x402; the original Python wren-guard is free (MIT). Check the official site for current plans.
Where can I find wren-guard Pro's source code?
On GitHub at claudeisgod/wren-guard.
What are alternatives to wren-guard Pro?
Similar tools include HOL Guard, Superagent, Pragor, Failproof AI, Is My Agent Safe and ADR.
Facts from our link-checked listing, the GitHub repository and the official site. See something wrong? Suggest an edit.
wren-guard Pro ratings and reviews
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