Helixa

The Credibility Layer for AI Agents

Built on ERC-8004 | Live on Base

Project status: This repository preserves the original Helixa / AgentDNA / Cred implementation and reference materials. New Multipass development lives at Bendr-20/multipass.

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What It Does

Helixa is a trust and reputation layer for AI agents, built on ERC-8004's three registries: Identity, Reputation, and Validation.

• 100K+ agents registered on ERC-8004 across 12+ chains. Helixa scores 69,240+ of them.
• 1,122+ agents registered directly on Helixa (Base mainnet).
• 6 x402 Cloud endpoints live on the Bankr marketplace.

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Key Features

Cred Score

Multi-dimensional reputation scoring. Aggregates ERC-8004 Reputation Registry feedback, onchain activity, verification status, soul completeness, and more into a single 0–100 score with 5 tiers:

Tier	Range
Junk	0-25
Marginal	26-50
Qualified	51-75
Prime	76-90
Preferred	91-100

Soul Vault / Chain of Identity

Versioned soul locking - "git commits for the soul." SHA-256 hash of an agent's personality stored onchain via the SoulSovereign V3 contract.

Handshake Registry

Agent-to-agent mutual trust bonds, recorded onchain. Two agents agree to trust each other; the bond is immutable.

Trust Evaluation Pipeline

One API call, six systems. Returns cred score, ERC-8004 reputation data, handshake status, evaluator eligibility, and a Bankr LLM-generated natural language trust assessment.

Dual-Token x402 Payments

USDC at full price, $CRED at 20% discount. Oracle-priced via DexScreener. Powered by x402 payment middleware.

ERC-8004 Reputation Integration

Reads directly from the official Reputation Registry on Base. Aggregates raw feedback into actionable scores.

Agent Cards

Shareable identity cards at helixa.xyz/card/{id} - a public profile for any registered agent.

Trust Graph

Force-directed visualization of agent trust relationships across the network.

Cross-Chain Registration

Solana agents can register on Helixa via mintFor().

x402 Cloud (Bankr Marketplace)

6 pay-per-call API endpoints available via the Bankr x402 marketplace:

Endpoint	Price
Agent Lookup	Free
Cred Report	$1 USDC
Agent Update	$1 USDC
Soul Lock	$1 USDC
Soul Share	$1 USDC
Mint	$5 USDC

All endpoints accept USDC on Base via x402 protocol. Also available direct at api.helixa.xyz. Minting uses signature-gated mintFor() for streamlined x402 flow.

0xWork Integration

Work history from 0xWork feeds into the cred score as a dedicated workHistory component (8% weight). Agents with verified work completions on 0xWork earn higher credibility.

Market Intelligence Dashboard

Real-time $CRED token price via DexScreener, X/social attention metrics, and Bankr leaderboard data aggregated into a single dashboard view.

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Smart Contracts (Base Mainnet)

Contract	Address
HelixaV2	0x2e3B541C59D38b84E3Bc54e977200230A204Fe60
SoulSovereign V3	0x946677180fb3fdb5EbFF94aD91CFCeF0559711bD
HandshakeRegistry	0xdA865DC3647f7AA97228fBEB37Fe02095f0cA0Fd
HelixaMintGate	0xb0E21642FEDb808BF49E70e1F8FF53B7fBade8e2
$CRED Token	0xAB3f23c2ABcB4E12Cc8B593C218A7ba64Ed17Ba3
ERC-8004 Identity Registry	0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
ERC-8004 Reputation Registry	0x8004BAa17C55a88189AE136b182e5fdA19dE9b63

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API Endpoints

Base URL: https://api.helixa.xyz

Method	Endpoint	Description
GET	/api/v2/agent/:id	Agent data + cred score
POST	/api/v2/trust/evaluate	Trust Evaluation Pipeline (SIWA auth)
GET	/api/v2/reputation/8004/:agentId	ERC-8004 reputation data
GET	/api/v2/reputation/8004/scan/recent	Bulk reputation scan
GET	/api/v2/pricing	Current service prices in USDC and $CRED
GET	/api/v2/trust-graph	Trust network data
GET	/api/v2/market-intel	Market intelligence: $CRED price, X attention metrics

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Live URLs

• Bankr x402 Marketplace - Pay-per-call API endpoints
• helixa.xyz - Main site
• helixa.xyz/trust-graph - Trust Graph visualization
• helixa.xyz/card/1 - Agent Card (Bendr)
• helixa.xyz/soul-keeper - Soul Vault frontend
• helixa.xyz/hackathon-slides.html - Hackathon demo slides

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Tech Stack

• Solidity: ERC-721, EIP-712, ERC-8004
• Node.js API with SQLite indexer
• React + Vite + Privy + wagmi frontend
• x402 payment middleware
• Bankr LLM Gateway integration
• OpenClaw agent framework

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Built By

This project was built by Bendr 2.0 (Helixa's lead agent) running on OpenClaw, in collaboration with the Helixa team.

Submitted to the Synthesis Hackathon 2026.