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Our x402 Integration Is Live: Pay-Per-Call Access to Token Metrics—No API Key Required

Use your crypto wallet to call Token Metrics endpoints on demand. Pay per call with USDC or get a 10% discount with TMAI. No monthly subscriptions, no API keys, just headers and code.
Token Metrics Team
7 min read
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Developers are already shipping with x402 at scale: 450,000+ weekly transactions, 700+ projects. This momentum is why our Token Metrics x402 integration matters for agents and apps that need real crypto intelligence on demand. You can now pay per API call using HTTP 402 and the x-coinbase-402 header, no API key required.

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Summary: Pay per API call to Token Metrics with x402 on Base using USDC or TMAI, set x-coinbase-402: true, and get instant access to trading signals, grades, and AI reports.

Check out the x402 ecosystem on Coingecko.

  

What You Get

Token Metrics now supports x402, the HTTP-native payment protocol from Coinbase. Users can call any public endpoint by paying per request with a wallet, eliminating API key management and upfront subscriptions. This makes Token Metrics data instantly accessible to AI agents, researchers, and developers who want on-demand crypto intelligence.

x402 enables truly flexible access where you pay only for what you use, with transparent per-call pricing in USDC or TMAI. The integration is live now across all Token Metrics public endpoints, from trading signals to AI reports. Here's everything you need to start calling Token Metrics with x402 today.

Quick Start

Get started with x402 + Token Metrics in three steps.

  1. Create a wallet client: Follow the x402 Quickstart for Buyers to set up a wallet client (Node.js with viem or Python with eth-account). Link: https://docs.cdp.coinbase.com/x402/docs/quickstart-buyers
  2. Set required headers: Add x-coinbase-402: true to any Token Metrics request. Optionally set x-payment-token: tmai for a 10% discount (defaults to usdc). Do not send x-api-key when using x402.
  3. Call any endpoint: Make a request to https://api.tokenmetrics.com/v2/[endpoint] with your wallet client. Payment happens automatically via x402 settlement.

That is it. Your wallet pays per call, and you get instant access to Token Metrics data with no subscription overhead.

Required Headers

  

Endpoint Pricing

Transparent per-call pricing across all Token Metrics public endpoints. Pay in USDC or get 10% off with TMAI.

  

  

  

  

All prices are per single call. Paying with TMAI automatically applies a 10% discount.

Try It on x402 Composer

If you want to see x402 + Token Metrics in action without writing code, head to x402 Composer. Composer is x402scan's playground for AI agents that pay per tool call. You can open a Token Metrics agent, chat with it, and watch real tool calls and USDC/TMAI settlements stream into the live Feed.

Composer surfaces active agents using Token Metrics endpoints like trading signals, price predictions, and AI reports. It is a great way to explore what is possible before you build your own integration. Link: https://x402scan.com/composer

Why x402 Changes the Game

Traditional API access requires upfront subscriptions, fixed rate limits, and key management overhead. x402 flips that model by letting you pay per call with a crypto wallet, with no API keys or monthly commitments. This is especially powerful for AI agents, which need flexible, on-demand access to external data without human intervention.

For Token Metrics, x402 unlocks agentic commerce where agents can autonomously pull crypto intelligence, pay only for what they use, and compose our endpoints with other x402-enabled tools like Heurist Mesh, Tavily, and Firecrawl. It is HTTP-native payments meeting real-world agent workflows.

What is x402?

x402 is an open-source HTTP-native payment protocol developed by Coinbase. It uses the HTTP 402 status code (Payment Required) to enable pay-per-request access to APIs and services. When you make a request with the x-coinbase-402 header, the server returns a payment challenge, your wallet signs and submits payment, and the server fulfills the request once settlement is verified.

The protocol runs on Base and Solana, with USDC and TMAI as the primary payment tokens. x402 is designed for composability, agents can chain multiple paid calls across different providers in a single workflow, paying each service directly without intermediaries. Learn more at the x402 Quickstart for Buyers: https://docs.cdp.coinbase.com/x402/docs/quickstart-buyers

FAQs

Do I need an API key to use x402 with Token Metrics?

No. When you set x-coinbase-402: true, your wallet signature replaces API key authentication. Do not send x-api-key in your requests.

Can I use x402 with a free trial or test wallet?

Yes, but you will need testnet USDC or TMAI on Base Sepolia (testnet) for development. Production calls require mainnet tokens.

How do I see my payment history?

Check x402scan for transaction logs and tool call history. Your wallet will also show outgoing USDC/TMAI transactions. Visit https://www.x402scan.com.

What happens if my wallet balance is too low?

The x402 client will return a payment failure before making the API call. Top up your wallet and retry.

Can I use x402 in production apps?

Yes. x402 is live on Base mainnet. Set appropriate spend limits and handle payment errors gracefully in your code.

Next Steps

Disclosure

Educational and informational purposes only. x402 involves crypto payments on public blockchains. Understand the risks, manage your wallet security, and test thoroughly before production use. Token Metrics does not provide financial advice.

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Token Metrics: AI-powered crypto research and ratings platform. We help investors make smarter decisions with unbiased Token Metrics Ratings, on-chain analytics, and editor-curated “Top 10” guides. Our platform distills thousands of data points into clear scores, trends, and alerts you can act on.
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Token Metrics Team
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Recent Posts

Research

Coinbase Base App Revolution: Why This Crypto Super App Could Change Everything

Token Metrics Team
6 min

The cryptocurrency industry is witnessing a paradigm shift as major exchanges race to build comprehensive "super apps" that consolidate trading, social features, and DeFi into single platforms. Leading this revolution is Coinbase's Base app, a ambitious project that could redefine how users interact with crypto.

What is the Base App?

The Base app represents Coinbase's vision of a crypto "everything app" – think WeChat for the blockchain era. Built on Coinbase's Layer 2 solution, Base, this platform integrates multiple crypto functions into one seamless experience:

Core Features

1. Centralized & Decentralized Trading

  • Full Coinbase exchange access
  • Integrated DEX trading (Aerodrome, Uniswap, others)
  • Real-time price discovery across venues
  • Professional trading tools for retail users

2. Social Creator Economy

  • Zora-powered social feeds
  • Creator coin monetization
  • Weekly reward distributions
  • Direct creator-to-fan interactions

3. Mini App Ecosystem

  • Farcaster-powered applications
  • Gaming and entertainment
  • DeFi protocol interfaces (Morpho, others)
  • Developer-friendly SDK

4. Integrated Payments

  • Base Pay for USDC transactions
  • Merchant integrations
  • Cross-border payments
  • Traditional payment rails bridge

The Technical Foundation: Farcaster Integration

What is Farcaster?

Farcaster serves as the technical backbone for the Base app's social and mini-app functionality. As a decentralized social networking protocol built on Ethereum, Farcaster enables:

  • Decentralized Identity: User-owned social graphs
  • Mini App Development: Easy-to-build social applications
  • Creator Monetization: Native token and NFT integration
  • Censorship Resistance: No single point of control

Developer Opportunities

The Base app ecosystem presents significant opportunities for developers:

Mini App Development:

  • Low barrier to entry with comprehensive SDKs
  • Built-in user base through Base app distribution
  • Viral potential through social integration
  • Multiple monetization options

Success Stories:

  • ZORA: Creator coins and content monetization
  • BankerCoin: Trading and transaction automation
  • Noice: Micro-tipping and creator coin distribution
  • QR Coin: Dynamic billboard advertising through QR auctions
  • DeFi Interfaces: Direct protocol access within the app

Market Impact: The Exchange Wars

The Race for Exchange Blockchains

Multiple major exchanges are pursuing similar strategies:

Coinbase (Base):

  • First-mover advantage in US market
  • Strong regulatory compliance
  • Institutional trust and backing

OKX (X Layer):

  • Recent 100%+ pump in OKB token
  • Focus on Asian markets
  • Advanced trading features

Binance (BNB Chain):

  • Established ecosystem with largest user base
  • Strong international presence
  • Comprehensive DeFi integration

Kraken (Inc L2):

  • Traditional finance integration
  • Professional trader focus
  • Regulatory compliance emphasis

Token Economics and Valuations

The exchange blokchain trend is driving significant value creation:

BNB Example:

  • Market cap: ~$100 billion
  • Exceeds Coinbase's equity valuation (~$84 billion)
  • Demonstrates token premium over traditional equity

Implications for Coinbase:

  • Potential Base token could double company's valuation
  • Regulatory clarity improving launch prospects
  • Investor pressure mounting for tokenization

Why the Base App Could Win

Unique Advantages

1. Regulatory Clarity

  • US-based with clear compliance framework
  • Trump administration crypto-friendly policies
  • Established relationships with regulators

2. User Experience Focus

  • Mobile-first design philosophy
  • Intuitive interface for crypto newcomers
  • Seamless onboarding from traditional finance

3. Ecosystem Integration

  • Direct fiat on/off ramps
  • Credit card integration
  • Traditional payment methods

4. Developer Support

  • Comprehensive documentation
  • Active developer community
  • Regular hackathons and boot camps
  • Financial incentives for builders

Network Effects

The Base app is designed to create powerful network effects:

  • More users attract more developers
  • More apps provide more utility
  • More utility drives more user adoption
  • More adoption increases token value and ecosystem rewards

Investment Opportunities

Direct Plays

Aerodrome (AERO):

  • Primary liquidity provider for Base
  • Direct integration benefits
  • Lower market cap than competitors
  • Significant upside as Base app scales

Farcaster Ecosystem:

  • Potential token launch expected
  • $180M raised in funding
  • Critical infrastructure provider
  • Mini app revenue sharing potential

Indirect Beneficiaries

Zora (ZORA):

  • Social layer integration
  • Creator economy infrastructure
  • NFT and creator coin platforms
  • Growing adoption metrics

Base Ecosystem Tokens:

  • Early-stage projects building on Base
  • Mini app tokens and creator coins
  • Protocol tokens with Base integration

Risks and Challenges

Technical Risks

Scalability Concerns:

  • L2 transaction capacity limitations
  • User experience during high demand
  • Cross-chain interoperability challenges

Competition Intensity:

  • Multiple well-funded competitors
  • Rapid feature copying
  • User acquisition costs

Regulatory Risks

Token Launch Uncertainty:

  • SEC approval for Base token unclear
  • Potential classification issues
  • Compliance costs and restrictions

International Expansion:

  • Varying regulatory frameworks
  • Competition from local players
  • Operational complexity

Market Risks

Narrative Rotation:

  • Crypto market attention spans shortening
  • Base narrative may be temporary
  • Other sectors could emerge as dominant

The Broader Implications

Industry Transformation

The success of super apps could fundamentally change crypto:

User Behavior:

  • Single app for all crypto needs
  • Reduced friction for newcomers
  • Higher engagement and retention

Developer Economics:

  • Platform dependency risks
  • Revenue sharing models
  • Innovation constraints vs. opportunities

Market Structure:

  • Exchange consolidation pressures
  • Middleware protocol opportunities
  • New value capture mechanisms

Traditional Finance Disruption

Crypto super apps pose a direct threat to:

  • Traditional payment processors
  • Social media platforms
  • Financial services companies
  • E-commerce platforms

Getting Started: Early Access Strategy

For Users

Current Status: Limited beta with waitlist Access Methods:

  • Team invitations only (no user referrals)
  • Active development with user feedback integration
  • Expected full launch within 1-2 months

Preparation Steps:

  1. Follow Base and Coinbase social channels
  2. Engage with Base ecosystem projects
  3. Participate in developer communities
  4. Build early adoption portfolio positions

For Developers

Opportunity Windows:

  • Mini app development with Farcaster SDK
  • Base ecosystem tool creation
  • Creator economy infrastructure
  • Cross-chain bridge solutions

Long-Term Vision

The Base app represents more than just another crypto platform – it's a bet on the future of digital interaction. Success could establish Coinbase as the dominant force in crypto user experience, while failure could cede ground to more agile competitors.

Key Success Metrics to Watch

User Adoption:

  • Daily active users growth
  • Transaction volume trends
  • User retention rates
  • Geographic expansion

Developer Ecosystem:

  • Mini app quantity and quality
  • Developer retention rates
  • Revenue sharing distributions
  • Innovation rate

Market Performance:

  • Base ecosystem token performance
  • Trading volume growth
  • Creator economy metrics
  • Cross-platform integrations

Conclusion

The Coinbase Base app represents a potentially transformative moment in crypto infrastructure. By combining social features, trading capabilities, and developer tools into a single platform, it could become the primary gateway for mainstream crypto adoption.

For investors and developers, the opportunity lies not just in the Base app itself, but in the entire ecosystem it's creating. Early positioning in Base-native projects, particularly those with lower market caps and strong integration potential, could yield significant returns as the platform scales.

However, success is far from guaranteed. The competitive landscape is intense, regulatory challenges remain, and crypto market narratives shift rapidly. The winners will be those who can execute flawlessly while adapting to changing market conditions.

The race for the crypto super app is just beginning – and the Base app has taken an early lead.

Stay ahead of crypto infrastructure trends. The platforms that win user mindshare today will shape the industry's future tomorrow.

Research

Ethereum and Base Ecosystem Rally: Top Crypto Trading Opportunities in 2025

Token Metrics Team
6 min

Ethereum and Base Ecosystem Rally: Top Crypto Trading Opportunities in 2025

The cryptocurrency market is experiencing a significant narrative shift, with Ethereum and Base ecosystem projects leading the charge in early 2025. Recent market analysis reveals a concentrated rally in ETH-related tokens, presenting both opportunities and risks for crypto traders.

The Current Market Narrative: Ethereum Dominance

The crypto market has entered what experts are calling "Ethereum season," with ETH positioning itself as the number two highest-rated token in terms of trader grade. This surge isn't coincidental – it's driven by several key factors:

Public Treasury Adoption

Major corporations are increasingly adding Ethereum to their treasury holdings, following the path Bitcoin paved. This institutional adoption has created sustained buying pressure, with Ethereum benefiting from the same "digital gold" narrative that propelled Bitcoin to new heights.

Base Ecosystem Explosion

Coinbase's Layer 2 solution, Base, has become the most relevant L2 network, overtaking Arbitrum's previous dominance. The recent rebranding of Coinbase Wallet to the "Base app" has created a powerful ecosystem effect, benefiting projects deeply integrated with Base infrastructure.

Top Performing Tokens in the Ethereum/Base Narrative

1. Aerodrome (AERO) - The Base Liquidity King

Current Market Cap: $1.2 billion
FDV: $2.3 billion

Aerodrome has emerged as the go-to liquidity solution for the Base ecosystem. With its tight integration into Coinbase's Base app ecosystem, AERO has significant upside potential as the Base app remains in limited beta. Once full access opens to Coinbase's broader user base, liquidity demand could skyrocket.

Key Advantages:

  • Direct Coinbase backing and integration
  • Lower market cap compared to competitors
  • Strong correlation with overall Base ecosystem growth
  • First-mover advantage in Base liquidity provision

2. Pendle (PENDLE) - The New DeFi Infrastructure Play

Current Market Cap: Under $1 billion
FDV: $1.6 billion

Pendle is positioning itself as essential DeFi infrastructure, often compared to the "new Aave." The project has attracted significant institutional investment and offers unique yield trading mechanisms that differentiate it from traditional lending protocols.

Growth Drivers:

  • 40% gain in the past week
  • Strong institutional backing
  • Innovative yield trading products
  • Lower valuation than established competitors

3. Ethena (ENA) - The Synthetic Stablecoin Revolution

Current Market Cap: $2.3 billion
FDV: $11.6 billion

Ethena has created a revolutionary synthetic stablecoin (USDe) that generates yield through delta-neutral trading strategies. The protocol has achieved remarkable growth, reaching 10 billion in stablecoin supply faster than both USDC and Tether historically.

Unique Features:

  • 18% yield generation in 2024
  • Delta-neutral funding rate arbitrage
  • Tier-1 VC backing (Dragonfly, Pantera)
  • Rapid adoption exceeding traditional stablecoins

Trading Strategy: Narrative-Based Approach

The current market requires a narrative-focused trading strategy rather than pure fundamental analysis. Here's why:

Market Psychology Shift

The crypto market has become increasingly trader-oriented, with attention shifting between sectors rapidly. Projects with strong fundamentals can underperform if they're not part of the current narrative cycle.

Historical Pattern Recognition

Previous cycles show clear rotation patterns:

  • AI agents dominated in late 2024 (AXBT, Virtuals)
  • DePIN had its moment earlier
  • Now Ethereum/Base ecosystem is trending

Risk Management Approach

Smart traders are:

  1. Following trending tokens with high trader grades
  2. Setting alerts for signal changes
  3. Taking profits when narratives shift
  4. Avoiding emotional attachment to fundamentally sound projects outside current narratives

The Coinbase Effect: Why Base Matters

Coinbase's strategic moves are creating a "super app" ecosystem similar to WeChat but built on crypto rails:

Multi-Function Integration

  • DEX Trading: Direct access to decentralized exchanges
  • Social Features: Creator economy through Zora integration
  • Mini Apps: Farcaster-powered applications
  • Payments: Base Pay for USDC transactions

Competitive Positioning

Other exchanges are following suit:

  • OKX launching X Layer with OKB as gas token (+100% recently)
  • Kraken developing Inc L2
  • Bybit expanding Mantle ecosystem

Risk Factors and Exit Strategy

Narrative Rotation Risk

History shows that even blue-chip projects can decline 85-90% when narratives shift. AI tokens like AXBT fell from $0.80 to $0.13 despite strong fundamentals.

Timing Considerations

The Ethereum/Base narrative may be reaching maturity. Smart money is:

  • Monitoring correlation breakdowns between related tokens
  • Watching for volume decreases in trending sectors
  • Preparing for the next narrative (potentially AI resurgence or new sector)

Alert-Based Trading

Successful traders are implementing:

  • Price alerts for key support/resistance levels
  • Signal change notifications for trading grade shifts
  • Volume alerts for unusual activity patterns

Looking Ahead: What's Next?

Potential Catalysts

  • Base app public launch could drive another AERO surge
  • Institutional DeFi adoption may benefit Pendle and Morpho
  • Stablecoin regulations could accelerate Ethena adoption

Sector Rotation Preparation

Smart traders are already positioning for potential rotations into:

  • AI agents (oversold, innovation continuing)
  • DePIN projects (fundamental development ongoing)
  • New narrative emergence (RWAs, GameFi resurgence)

Conclusion

The Ethereum and Base ecosystem rally presents compelling short-term opportunities, but requires disciplined execution and risk management. Focus on projects with strong narrative alignment, lower valuations relative to peers, and clear catalysts for continued growth.

Remember: in the current market environment, being right about fundamentals isn't enough – you need to be right about narrative timing. Stay flexible, use alerts effectively, and be prepared to rotate when the market's attention shifts.

The crypto market moves fast. Stay informed with real-time analysis and trading signals to maximize your opportunities while managing risk effectively.

Research

Choosing the Right Crypto API for Your Bot: REST vs WebSockets Explained

Token Metrics Team
6

As crypto trading automation accelerates into 2025, choosing the right API interface for your bot could be the critical difference between lagging behind or capitalizing on real-time opportunities. But when it comes to REST vs WebSocket crypto APIs, which technology should you select for power, reliability, and performance? This post details the core differences, essential trade-offs, and latest best practices for crypto API comparison, empowering you to make a technical, mission-aligned decision for your next-generation trading bot.

REST and WebSocket: Core Concepts for Crypto APIs

To understand which API protocol is optimal for your crypto bot in 2025, let’s clarify what REST and WebSocket actually do—especially in a high-frequency, automation-driven ecosystem.


     

     


The fundamental contrast: REST works in a "pull" model (request/response), while WebSockets operate in a "push" paradigm (real-time streams). This distinction plays a major role in how bots interact with exchanges and handle crypto market shifts.

Performance, Latency, and Reliability for Crypto Bots

Performance and data freshness are critical for crypto APIs in 2025. High-frequency or latency-sensitive trading bots depend on receiving accurate, instant data on price movements and order book changes.

       

Yet reliability considerations persist. WebSocket connections may experience drops, require reconnection logic, and occasionally miss events during high network volatility. REST, while slower, may provide more consistency under unstable conditions.

Scalability, Security, and Use Cases in Crypto API Comparison

Your crypto bot’s requirements—frequency of updates, types of orders, and compliance frameworks—may drive the API choice. Here’s how REST and WebSocket compare across scenarios relevant in 2025:


     

     


Security-wise, REST can offer granular access controls per endpoint. WebSockets, though encrypted, have unique session management and timeout considerations—especially important for bots managing real funds.

In the ever-evolving crypto automation landscape, developers and researchers are seeing:


     

     

     


Ultimately, the “better” API depends on your bot’s profile: Speed-critical, event-driven bots gravitate to WebSockets, while research bots or those trading on daily signals may remain with REST. Many leading bot frameworks in 2025 offer seamless switching or even run hybrid workflows for best-in-class resilience.

Practical Tips for Comparing REST vs WebSocket Crypto APIs

When evaluating crypto APIs for your bot or automation project, consider these practical criteria:

    Above all, test API performance in real-market scenarios—using sandboxes or historical replays—to ensure your bot’s architecture is future-proofed for 2025 volatility and growth.

    Build Smarter Crypto Apps & AI Agents with Token Metrics

    Token Metrics provides real-time prices, trading signals, and on-chain insights all from one powerful API. Grab a Free API Key

    FAQ: REST vs WebSocket Crypto APIs for Bots in 2025

    What are the main differences between REST and WebSocket APIs?

    REST APIs use isolated request/response cycles and are suited for infrequent or simple queries. WebSocket APIs sustain continuous, two-way connections for real-time market data updates. The choice depends on whether your bot needs static or streaming data.

    Which API type is better for real-time crypto trading bots?

    WebSocket APIs are preferred for real-time trading bots due to their lower latency and ability to push instant data updates. However, implementation complexity and stability must be considered.

    Can I use both REST and WebSocket in the same bot?

    Yes. Many bots use REST for account management or trade execution and WebSocket for live data streams. This hybrid approach leverages the strengths of each protocol.

    Are there security differences between REST and WebSocket crypto APIs?

    Both protocols utilize SSL encryption and API key-based authentication, but WebSocket sessions require more careful management and regular re-authentication to prevent stale or hijacked connections.

    How do I choose the right API for my crypto bot?

    Assess your bot’s use case—speed versus reliability, frequency of queries, data intensity, and integration requirements. Testing both protocols with your trading logic is recommended for optimization.

    Disclaimer

    This content is for educational and informational purposes only. It does not constitute investment, trading, or financial advice. Past performance and API platform capabilities are not guarantees of future results. Always perform independent research and technical due diligence before building or deploying trading bots or utilizing API-based automation tools.

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