For developers building trusted AI Agents able to interact with persons, companies, services, and other agents
Wallet4Agent provides the trust layer that AI Agents need to operate safely in the real world.
This document explains the technical components, standards, and identity mechanisms behind the platform.
MCP server for verifying EUDI/Talao wallet data via OIDC4VP (pull) for AI agents.
2026-11-08
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1. 🎯 Purpose of Wallet4Agent
AI Agents increasingly take actions, access data, and collaborate.
To do this safely, they must be able to:
🆔 Prove who they are
👤 Prove who owns or controls them
📄 Hold verifiable credentials
🔐 Sign actions and data securely
🔗 Trust users, companies, and other agents
🪪 Authenticate to external systems without fragile API keys
Wallet4Agent provides AI Agents with:
A DID-based identity
A secure wallet for credentials
Cloud KMS-backed signing keys
Interoperability with OIDC4VCI, OIDC4VP, SD‑JWT, JSON-LD, OAuth2
An MCP server interface for agents
Everything is standards‑based and interoperable.
2. 🧱 Architecture Overview
Wallet4Agent is built with three coordinated layers:
2.1 🖥️ MCP Server (Model Context Protocol)
Single endpoint: POST https://wallet4agent.com/mcp
Exposes all operations as tools:
Identity creation
Credential issuance
Verification flows
Signing operations
Configuration
2.2 👛 Identity Wallet
Manages:
The Agent’s DID & DID Document
Stored credentials (SD‑JWT VC, VC JSON‑LD)
Linked Verifiable Presentations
Wallet metadata & service endpoints
2.3 🔐 Authorization & Verification Layer
Supports:
OAuth2 access tokens
OIDC4VCI (credential issuance)
OIDC4VP (presentation)
User verification flows
Agent‑to‑Agent authentication
All complex cryptographic and identity logic stays in Wallet4Agent.
Your agent simply calls MCP tools.
3. 🆔 Identity Layer (DID & DID Documents)
Each AI Agent receives a Decentralized Identifier (DID) compliant with the W3C DID Core specification.
Wallet4Agent supports two DID methods:
3.1 🌐 did:web (DNS-based identity)
A DID anchored on a domain.
did:web:wallet4agent.com:<agent-id>
⭐ Characteristics:
Easy to resolve using HTTPS
DID Document lives at: https://wallet4agent.com/did/<agent-id>
Perfect for SaaS agents
Human-readable, infrastructure-friendly
Works well for corporate or platform-linked AI agents
If you are an Agent developer, Wallet4Agent gives you:
Feature
What you get
🆔 Agent identity
DID + DID Document
🔑 Authentication
Dev PAT, Agent PAT, OAuth2 Client Credentials, private_key_jwt
🔐 Cryptographic keys
Cloud KMS signatures, non‑exportable
📜 Credential issuance
Full OIDC4VCI support (SD‑JWT VC & VC JSON‑LD)
✅ Credential verification
OIDC4VP with simple MCP tools and safe derived claims
👤 Human interaction
QR code → wallet → verified attributes
🤝 Inter‑agent trust
Ability to inspect credentials of other agents (when authorized)
⚙️ Configuration
Auth mode, keys, policies all manageable via MCP
🛡️ Security
KMS, OAuth2, DID rotation & key updates, role‑separated tokens
Your AI Agent becomes a verifiable digital entity, capable of participating in decentralized and regulated digital identity ecosystems while preserving security and accountability.
Maintainer: Wallet4Agent (Web3 Digital Wallet / Talao )
For feedback or additional documentation, use the contact channels on the Wallet4Agent website.