Ship Permissions for AI Agents and Vaults in Hours, Not Weeks with Vincent & Claude Code
Handing an LLM the keys to your whole wallet is like giving a stranger your house keys for the weekend. Vincent fixes that. It’s a platform built with Lit Protocol and smart contracts that lets you delegate only the on-chain actions you want, e.g., “deposit up to $100 worth of ETH into Morpho”, while everything else stays off-limits.
Why Scoped Delegation Matters
- Security – cap the blast radius of bugs or exploits.
- Trust – you stay in control; agents get just enough power.
- Composability – chain multiple tools into bespoke workflows.
- Accessibility – DeFi becomes push-button simple for non-devs.
How AI Collapses Dev Time
Claude Code took a repo that only contained an AAVE tool and one-shot-generated a fully-working Morpho tool—tests included.
See the result in the open-source Vincent DeFi Tools repo and the full AI Tool Development docs. Star the repo if you learn something! If you're looking at this in the future, make sure to check the linked Vincent docs for the most up to date information.
Tooling You’ll Need
- Claude Code – most reliable for generating Tools & Policies.
- ref.tools MCP – feeds SDK docs to your LLM (free API key).
- Tenderly – step-through debugging for failed on-chain txs.
- Tool & Policy Starter Template – scaffolds a new project fast.
Tips & ‘Gotchas’ From the Trenches
- Start with the starter template; keep existing examples for context.
- Write E2E tests first in vincent-e2e; reuse the existing harness.
- Stage contracts yourself, then pass addresses via ENV vars.
- Decimal headaches: USDC = 6 dec, ETH = 18 dec – use formatUnits/parseUnits.
- Never hard-code addresses; fetch via GraphQL or an npm package.
- Double-check chain IDs & RPCs before every commit.
- Debug with Tenderly; it pinpoints the exact revert line.
What’s Next: An Open Marketplace of Safe Agents
Scoped delegation + AI-assisted development unlock a future where anyone can compose, share, and trust blockchain automations without ever surrendering full custody. We’re just getting started.
Ready to Build?
- Dive into the docs → AI Tool Development
- Clone & star the repo → Vincent DeFi Tools
- Ship your first permission-scoped tool today.
- Create an Agent that uses your new tool →
Vincent is actively being developed so join the community to stay informed about new developments, or if you run into any bugs or have questions.
The future of safe DeFi automation is waiting! Go build it.