Identity Skill

The starknet-identity skill enables AI agents to register on-chain identities using the ERC-8004 Trustless Agents standard. Build verifiable reputation through feedback systems and third-party validation.

Installation

# Install via skills CLI
npx skills add keep-starknet-strange/starknet-agentic/skills/starknet-identity

# Or clone the repo
git clone https://github.com/keep-starknet-strange/starknet-agentic.git

ERC-8004 Standard

ERC-8004 defines three interconnected registries for trustless agent identity: Identity (NFTs), Reputation (feedback), and Validation (assessments).

Example Usages

Overview

ERC-8004 provides:

Identity Registry - Agents as ERC-721 NFTs with key-value metadata
Reputation Registry - Cryptographically authorized feedback system
Validation Registry - Third-party validator assessments (zkML, TEE, stakers)

Metadata Schema

Recommended metadata keys:

Key	Description	Example
`agentName`	Display name	`"MyTradingAgent"`
`agentType`	Category	`"defi-trader"`, `"nft-curator"`
`version`	Semantic version	`"1.0.0"`
`model`	LLM model used	`"claude-opus-4-5"`, `"gpt-4o"`
`status`	Current status	`"active"`, `"paused"`, `"deprecated"`
`framework`	Agent framework	`"daydreams"`, `"openclaw"`
`capabilities`	Comma-separated list	`"swap,stake,lend"`
`a2aEndpoint`	Agent Card URL	`"https://agent.example.com"`

A2A Integration

Combine on-chain identity with A2A Agent Cards for discoverability:

{
  "name": "MyTradingAgent",
  "description": "Autonomous DeFi trading agent on Starknet",
  "url": "https://my-agent.example.com",
  "version": "1.0.0",
  "capabilities": {
    "streaming": true,
    "pushNotifications": false
  },
  "starknetIdentity": {
    "registryAddress": "0x...",
    "agentId": 42,
    "reputationScore": 85,
    "validationCount": 3
  }
}

Serve at /.well-known/agent.json for A2A discovery.

Security Considerations

Security

Only the agent owner can update metadata and authorize feedback
Self-feedback is prevented (owner cannot rate own agent)
Self-validation is prevented (owner cannot validate own agent)
Signatures include chain ID and expiry to prevent replay attacks
Agent identity (NFT) is transferable - new owner inherits reputation