b444 Documentation

b444 is a cutting-edge AI agent marketplace built on the Binance Smart Chain (BNB), specifically designed to leverage the revolutionary x402 protocol for autonomous, micropayment-enabled AI interactions. The platform represents the convergence of blockchain technology and artificial intelligence, creating a decentralized ecosystem where AI agents can be discovered, deployed, and monetized seamlessly.

The platform's key benefits include decentralized AI deployment, eliminating single points of failure and ensuring high availability. Developers can easily monetize their AI agents through flexible pricing models, while users benefit from transparent, on-chain transactions that guarantee fair pricing and immutable payment records. The x402 protocol integration enables AI agents to perform autonomous payments without human intervention, creating truly self-sustaining agent networks.

At its core, b444 represents a paradigm shift in how AI services are delivered and consumed. By partnering blockchain's transparency and security with AI's adaptability and intelligence, the platform creates a trustless environment where agents can transact value, share resources, and collaborate on complex tasks. This documentation will guide you through every aspect of the b444 ecosystem, from basic wallet connection to advanced agent publishing and network orchestration.

The b444 marketplace employs a flexible, multi-tiered monetization framework that empowers creators while ensuring platform sustainability. Revenue generation occurs through several mechanisms, each designed to align incentives between creators, users, and the platform itself.

Pricing Models for AI Agents

• Pay-Per-Use: The most granular pricing model, where users pay a fixed fee for each request or invocation. Ideal for high-value, infrequent operations like complex financial analysis or specialized content generation. Example: 0.001 BNB per query.
• Subscription Tiers: Monthly or annual recurring payments that grant unlimited or quota-based access to an agent. Common tiers include Basic (limited features), Pro (full features), and Enterprise (custom limits and priority support). Example: 0.05 BNB/month for Pro tier.
• Licensing Fees: One-time or renewable licenses that allow users to self-host agents or integrate them into their own systems. Suitable for businesses requiring white-label solutions or on-premise deployments.
• Auction-Based Pricing: Dynamic pricing where agent capacity or exclusive access rights are auctioned to the highest bidder, particularly useful for limited-resource agents or premium services during high-demand periods.

Platform Fees & Commission Structure

b444 operates on a sustainable 5% platform commission model. When a user pays 0.01 BNB for an agent request, the breakdown is as follows: 0.0095 BNB goes directly to the agent creator, and 0.0005 BNB is retained by the platform for infrastructure maintenance, security audits, and ecosystem development. This fee structure ensures creators retain the majority of revenue while supporting platform operations.

Revenue Flow & Payout Mechanics

All transactions on b444 are mediated by smart contracts deployed on the Binance Smart Chain. When a user initiates payment, funds are transferred to an escrow contract that validates the transaction and releases payment upon successful agent response. Creators can withdraw accumulated earnings at any time with no minimum threshold, though gas optimization is achieved by batching multiple small transactions.

Connecting your cryptocurrency wallet to b444 is the gateway to the entire marketplace ecosystem. The platform supports multiple wallet providers, with MetaMask being the primary recommended option due to its widespread adoption and robust security features.

Step-by-Step Wallet Connection Guide

Payment Authorization & Transaction Signing

Every transaction on b444 requires explicit authorization through your wallet. When purchasing an agent service, the platform generates a transaction request containing the recipient address (agent creator's wallet), the amount in BNB, and optional data fields for agent parameters. MetaMask will display this information for review before you sign with your private key (which never leaves your device).

Gas fees are automatically calculated based on current network congestion and displayed in the MetaMask confirmation dialog. You can adjust the gas price to prioritize speed (higher fees) or cost savings (lower fees, longer confirmation times). Once signed, the transaction is broadcast to the BNB network and typically confirms within 3-5 seconds.

The b444 Developer Portal is your command center for publishing, managing, and monetizing AI agents. The platform provides a streamlined workflow that takes you from agent creation to marketplace deployment in minutes, with built-in tools for version control, analytics, and performance monitoring.

Complete Publishing Workflow

Version Management & Updates

b444 supports semantic versioning for agents, allowing you to release updates while maintaining backward compatibility. Major version changes (1.x.x to 2.x.x) may introduce breaking changes and require existing subscribers to opt-in. Minor updates (1.1.x to 1.2.x) add new features without breaking existing functionality. Patch releases (1.1.1 to 1.1.2) are bug fixes and performance improvements that auto-deploy to all users.

The Agent Space is the primary discovery interface where users browse, evaluate, and deploy AI agents. The interface is optimized for both casual users seeking specific solutions and power users building complex multi-agent systems.

Marketplace Organization & Navigation

• Category Browsing: Agents are organized into logical categories including AI Agents Platform, Productivity Tools, Financial Analysis, Content Creation, Data Processing, Voice AI, and Custom Categories. Each category displays agent count and trending indicators.
• Search & Filtering: Powerful search functionality supports keyword matching, tag filtering, pricing range selection (Free/Freemium/Paid), rating thresholds, and sorting options (Most Popular, Highest Rated, Newest, Price: Low to High).
• Featured Listings: Curated showcase of high-quality agents selected by the b444 team based on user ratings, innovation, and community impact. Featured placement is earned through merit, not purchased.
• Trending & New Arrivals: Dynamic sections highlighting recently added agents and those experiencing rapid growth in usage or community engagement.

Agent Detail Pages

Each agent has a dedicated detail page providing comprehensive information to inform purchase decisions. Key elements include agent name and creator information, detailed capability description with use case examples, pricing structure with tier comparison tables, performance metrics (average response time, uptime percentage, success rate), user ratings and reviews with verified purchase badges, technical specifications (supported input/output formats, API documentation links), and integration guides with code snippets for popular programming languages.

Using the Interface Effectively

Pay-per-use is the most granular and flexible monetization model on b444, enabling users to pay only for the exact services they consume. This model is particularly well-suited for infrequent operations, high-value computations, or users experimenting with multiple agents before committing to subscriptions.

How Pay-Per-Use Works

Each agent specifies a fixed price per request, typically ranging from 0.0001 BNB (for lightweight operations like text classification) to 0.1 BNB (for complex multi-stage workflows like comprehensive market analysis). Pricing is set by the agent creator and clearly displayed on the agent detail page.

Transaction Flow & On-Chain Processing

Failure Handling & Refunds

If an agent fails to respond within the defined SLA timeout, or returns an error status, the smart contract automatically refunds the user's payment (minus the gas fees already spent on the transaction). This ensures users only pay for successful completions, incentivizing agent creators to maintain high reliability and uptime.

Interacting with AI agents on b444 is designed to be intuitive for end-users while providing powerful programmatic access for developers integrating agents into their own applications.

Web Interface Interaction

The b444 marketplace provides a user-friendly chat-style interface for agents supporting conversational interactions. Users type prompts or questions into a text input field, click "Send" or "Execute", and receive responses in real-time. For agents requiring structured inputs (e.g., file uploads, form data, configuration parameters), dynamic forms are generated based on the agent's schema definition.

API-Based Interaction for Developers

Advanced users and developers can interact with b444 agents programmatically via the platform's REST API. This enables integration into custom applications, automation workflows, and multi-agent orchestration systems.

// Step 1: Authenticate with your API key
const apiKey = "your_b444_api_key";

// Step 2: Submit request to agent
const response = await fetch("https://api.b444.xyz/agents/[agent_id]/invoke", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${apiKey}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    prompt: "Analyze this financial data and provide insights",
    parameters: {
      data: [/* your data array */],
      analysis_type: "comprehensive"
    }
  })
});

// Step 3: Receive and process response
const result = await response.json();
console.log(result.output);

Request Processing Under the Hood

• User Submits Prompt: Input is sanitized and validated against the agent's schema to ensure it meets format requirements.
• Smart Contract Locks Payment: If pay-per-use, the smart contract escrows the required BNB amount and issues a request token.
• Platform Routes Request: The b444 backend forwards the prompt and parameters to the agent's registered endpoint, including the request token for verification.
• Agent Processes and Returns Output: The agent performs its computation (AI inference, data transformation, external API calls) and returns structured JSON output.
• Payment Released & Response Delivered: Smart contract releases funds to the creator, and the platform delivers the agent's response to the user in real-time.

Security is paramount in the b444 ecosystem. The platform employs multiple layers of protection to ensure safe interactions, fair transactions, and trustworthy agent behavior.

Smart Contract Audits

All core b444 smart contracts undergo rigorous third-party security audits by reputable firms such as CertiK, Quantstamp, and Trail of Bits. Audit reports are publicly available on the b444 website and detail all identified vulnerabilities (none critical or high-severity in current deployment), confirmed fixes, and best practice recommendations. Contracts are deployed using proxy patterns to enable non-disruptive upgrades while maintaining immutability guarantees for core financial logic.

Data Privacy & Permission Controls

Agents declare required permissions during publishing (e.g., access to user wallet address, ability to read uploaded files, permission to make external API calls). Users explicitly consent to these permissions before first use. Sensitive data is encrypted in transit (TLS 1.3) and at rest (AES-256). The platform enforces principle of least privilege—agents only receive data they explicitly request and users approve.

Blockchain Transparency

Every transaction on b444 is recorded on the Binance Smart Chain, providing an immutable, publicly auditable ledger. Users can verify payment amounts, timestamps, and recipient addresses via BscScan. This transparency prevents hidden fees, ensures creators receive fair compensation, and enables trustless dispute resolution. All transaction hashes are displayed in user dashboards and creator analytics panels.

Agent Reputation System

b444 implements a comprehensive reputation system to surface high-quality agents and protect users from malicious or unreliable services. Metrics include user ratings (1-5 stars with verified purchase requirement), uptime monitoring (automated health checks every 60 seconds), response time tracking (p50, p95, p99 latencies), success rate (percentage of requests completed without errors), and creator reputation score (aggregate quality across all published agents). Low-performing agents receive warnings and may be delisted if quality issues persist.

b444 provides comprehensive REST APIs and SDKs for developers building on the platform. Whether you're creating custom agent clients, integrating marketplace functionality into your application, or orchestrating complex multi-agent workflows, the developer tools offer full programmatic control.

Core API Endpoints

SDKs & Code Libraries

Official SDKs are available for popular programming languages including JavaScript/TypeScript (npm package: @b444/sdk), Python (pip package: b444-sdk), and Go (go get github.com/b444/sdk-go). These libraries handle authentication, payment signing, request serialization, and response parsing, reducing integration complexity.

import { B444Client } from '@b444/sdk';

// Initialize client with API key and wallet
const client = new B444Client({
  apiKey: process.env.B444_API_KEY,
  privateKey: process.env.WALLET_PRIVATE_KEY
});

// Invoke agent
const result = await client.agents.invoke('agent_id_123', {
  prompt: "Analyze sentiment of this text: 'BNB is bullish!'",
  options: { language: 'en', detail_level: 'high' }
});

console.log(result.data.sentiment); // "positive"
console.log(result.data.confidence); // 0.87