ElizaSign AI
AI Agent for Secure Role-Based Web3 Signing Flow
Created on 29th June 2025
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ElizaSign AI
AI Agent for Secure Role-Based Web3 Signing Flow
The problem ElizaSign AI solves
**Modern digital signing is broken.
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Most tools like DocuSign are not built for Web3. They don't understand wallets, can't verify roles like "DAO signer" or "Protocol Founder", and offer no onchain auditability. Meanwhile, key management and delegated signing in decentralized environments remain manual, error-prone, and insecure.
ElizaSign AI solves this by introducing an autonomous, AI-powered signing agent that handles delegated signing tasks based on wallet-linked roles. It allows any user to authorize AI to sign documents on their behalf — securely, transparently, and verifiably.
Users can:
- Assign roles (e.g., CEO, buyer, notary) via a simple chat interface
- Let Eliza inject the correct signature into any uploaded document
- Bind that signature to their wallet
- Store the proof onchain
This ensures that every signature is traceable, non-repudiable, and authorized — no matter who initiated the action. Whether you're a DAO approving proposals, a startup founder signing a SAFE, or a freelancer needing instant contract execution, ElizaSign AI turns signing from a bottleneck into a trustless automation layer.
Challenges I ran into
One of the main challenges we faced was building a secure and flexible AI-driven signing engine that could handle delegated roles without compromising on wallet-level authority.
We initially struggled with:
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AI hallucination and overreach
Our early ElizaAgent model sometimes "signed" without clear instructions. To solve this, we implemented function calling and strict role-validation to ensure signatures were only injected based on explicitly mapped wallet roles. -
Signature positioning and PDF injection
Injecting signatures dynamically into arbitrary PDFs proved difficult, especially when parsing document structure. We solved this by using pdf-lib combined with AI-driven semantic region detection, so the signature appears in a logically correct location. -
Binding AI decisions to wallet authority
We needed a secure way to let AI act on behalf of a user, but only when that user explicitly permitted it. The solution was to simulate a delegation layer using wallet signature verification + onchain signature registry smart contract.
Through all these hurdles, the biggest insight was that delegation is not just technical — it's also a trust design pattern. We had to make both UX and backend logic match that expectation.
Tracks Applied (1)
DeFi & Web3 Agents
ElizaOS
Technologies used