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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 Team
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Recent Posts

Crypto Basics

Top Ways to Swap Cryptocurrency Efficiently and Cost-Effectively

Token Metrics Team
6 min

Introduction to Crypto Swap

Swapping cryptocurrency has become an essential part of the digital currencies market, allowing users to exchange one digital asset for another quickly and efficiently. Whether you want to swap bitcoin for altcoins or exchange other cryptocurrencies, understanding how to swap crypto efficiently with low fees and the best rates is crucial. By using a reliable crypto exchange, you can securely store and swap cryptocurrencies with confidence. Many users prefer to manage their assets through a self-custody wallet, which offers greater control and security. To complete a cryptocurrency swap, you must enter a receiving wallet address. To get started, it is important to choose a trustworthy cryptocurrency exchange that supports seamless crypto swaps and provides a smooth user experience.

Choosing a Reliable Crypto Exchange

Understanding Crypto Exchanges

Selecting the right crypto exchange is key to swapping cryptocurrency effectively. Begin by researching and comparing various crypto exchanges to find platforms that offer the best rates and low fees. A non-custodial platform is often preferred because it allows users to securely store and swap cryptocurrencies without relinquishing control of their digital assets. Security features should be a top priority—look for exchanges with strong encryption, two-factor authentication, and a responsive support team to assist you when needed. Additionally, you send the cryptocurrency you want to swap to a generated deposit address provided by the platform. Reviewing transaction history and user feedback can provide insights into the platform’s reliability and performance, helping you make an informed decision.

Efficient Crypto Swap Processes

Swap Crypto Strategies

To swap crypto efficiently, consider using a decentralized exchange (DEX). Decentralized exchanges enable users to trade directly from their wallets, avoiding the high network fees often associated with centralized platforms. These exchanges leverage smart contracts to execute swaps securely and automatically, reducing the risk of errors or fraud. Users often receive tokens in their wallet after the exchange completes, which can take from a few minutes to several hours depending on network conditions. When swapping crypto, it’s important to select the best crypto pair or swap pairs that align with your trading goals, as this can maximize the value of your transaction. Always factor in gas fees and other costs associated with the swap to ensure the process remains cost-effective.

Non Custodial Platforms

Non-custodial platforms have grown in popularity among crypto users who want full control over their digital assets. By using a self-custody wallet, you can securely store and swap cryptocurrencies without relying on third parties. This flexibility means you maintain control over your funds at all times, reducing exposure to hacks or mismanagement. Non-custodial swaps empower users to manage their assets directly, execute transactions quickly, and maintain privacy. Swapping crypto usually incurs a network fee, paid in the native currency of the blockchain used for the swap. Learning how to navigate these platforms is essential for anyone looking to swap crypto securely and efficiently.

Buy Crypto and Swap

For those new to the market, buying crypto is the first step before swapping. You can buy bitcoin or other cryptocurrencies using various payment methods such as bank transfers, credit cards, or digital payment services. Once you have acquired your digital assets, you can swap crypto immediately to take advantage of favorable market trends. However, the amount you can swap may be subject to platform limitations, such as minimum or maximum amounts. Using a reliable crypto exchange ensures you get the best exchange rate and pay minimal fees during both the purchase and swap processes. Always consider the exchange rate and associated fees to optimize your investment.

Swapping Bitcoin

Bitcoin remains the most traded cryptocurrency, and swapping bitcoin for other cryptocurrencies is a common practice. Utilizing a decentralized exchange to swap bitcoin can help you benefit from low fees and the best rates available. Storing bitcoin in a self-custody wallet before swapping provides an added layer of security, ensuring your funds are safe throughout the transaction. Once a swap is confirmed, it may take time for the transaction to complete based on the blockchain used. Understanding how to swap bitcoin efficiently empowers users to diversify their portfolios and capitalize on market opportunities without unnecessary delays or costs.

Swap Pairs and Rates

Choosing the right swap pairs is fundamental to maximizing the value of your crypto swaps. Different crypto pairs offer varying exchange rates and liquidity, so comparing rates and fees across multiple crypto exchanges can help you find the most advantageous options. Reliable platforms often provide transparent pricing and low fees, enabling users to make swaps with confidence. Crypto swaps can involve fluctuating fees based on network traffic and volatility. Keeping an eye on market trends and exchange rates ensures you execute swaps at the most favorable times, enhancing your overall crypto trading strategy.

Best Rates for Crypto Swap

Securing the best rates when you swap cryptocurrency depends largely on the platform you use. By selecting a reputable crypto exchange, you can access competitive prices and benefit from low fees. Decentralized exchanges often provide an edge by minimizing network fees, making them an attractive option for cost-conscious users. Changelly, for instance, has industry-low fees of up to 0.25% on crypto exchanges. Comparing rates and fees across several exchanges before executing a swap is a smart practice that helps you get the most value from your digital assets.

Crypto Swap Security

Security is paramount when swapping crypto. Using a self-custody wallet allows you to securely store and swap cryptocurrencies without exposing your funds to third-party risks. Smart contracts enhance security by automating swap execution in a transparent and tamper-proof manner. When choosing a crypto exchange, pay close attention to its security features and the responsiveness of its support team. Learning how to securely swap crypto and manage your digital assets protects you from fraud and ensures peace of mind.

Worldwide Crypto Exchange

Accessing a worldwide crypto exchange opens the door to global markets, providing more swap pairs and competitive rates. These platforms typically offer low fees and robust security features, supported by dedicated teams that assist users around the clock. Using a worldwide exchange allows you to diversify your portfolio and take advantage of opportunities across different regions. Mastering how to use such exchanges can help you swap crypto efficiently and manage your assets with greater flexibility.

Easiest Crypto Exchange

For beginners and experienced users alike, the easiest crypto exchange combines user-friendliness with powerful features. These platforms provide intuitive interfaces, clear instructions, and helpful tools that simplify the swapping process. Low fees and the best rates are often part of their offerings, making it easier for users to trade and swap crypto without hassle. Learning how to navigate the easiest crypto exchange can significantly enhance your crypto trading experience, allowing you to execute swaps quickly and cost-effectively.

Crypto Swap Frequently Asked Questions

Many users have questions about how to swap crypto and manage their digital assets effectively. Common inquiries include the benefits and risks of swapping, how to choose swap pairs, and how to handle fees and security. Understanding these aspects helps users make informed decisions and avoid common pitfalls. Accessing resources and support from reliable crypto exchanges further aids in efficient and cost-effective crypto swaps.

Crypto Swap Tips and Tricks

To swap crypto efficiently, it’s important to follow some key tips and tricks. Always prioritize security by using non-custodial wallets and reputable exchanges. Take advantage of market trends and choose swap pairs with favorable exchange rates. Managing gas fees and network fees carefully can save you money. Additionally, leveraging the flexibility and control offered by reliable platforms ensures a smooth swapping experience.

Crypto Swap Mistakes to Avoid

Avoiding common mistakes is crucial for a successful crypto swap. Neglecting security, ignoring fees, and rushing into swaps without research can lead to losses. Always maintain control of your assets by using self-custody wallets and avoid platforms with poor reputations. Utilize available support resources to navigate the swap process confidently and secure the best rates.

Crypto Swap Market Trends

Staying informed about crypto swap market trends allows you to make smarter trading decisions. Market analysis helps you understand price movements, liquidity changes, and emerging swap pairs. By leveraging these insights, you can time your swaps to maximize returns and minimize costs. Reliable exchanges often provide tools and resources to keep users updated on the latest market developments.

Crypto Swap Regulation

The regulatory landscape for crypto swap is evolving rapidly. Staying compliant with relevant laws and regulations is essential for secure and legal transactions. Reliable crypto exchanges typically adhere to regulatory standards and provide users with guidance to ensure compliance. Keeping abreast of regulatory changes helps you avoid legal issues and maintain a secure trading environment.

Crypto Swap Future Outlook

The future of crypto swap looks promising, with ongoing innovations enhancing security, speed, and accessibility. Advances in smart contracts, non-custodial swaps, and decentralized exchanges are shaping the next generation of crypto trading platforms. Staying informed about these developments and using reliable exchanges prepares users to benefit from future trends. Embracing these innovations will help you stay ahead of the curve in the dynamic world of digital assets.

By understanding these key aspects of swapping cryptocurrency, you can navigate the market efficiently, securely, and cost-effectively. Whether you are swapping bitcoin, exchanging other cryptocurrencies, or exploring new digital assets, choosing the right platform and strategies will maximize your success in the evolving crypto landscape.

Crypto Basics

Understanding Cryptocurrency Trading Pairs: A Comprehensive Overview

Token Metrics Team
6 min

Introduction to Crypto Trading

Cryptocurrency trading involves the exchange of one digital asset for another on a trading platform, a process made possible through the use of cryptocurrency trading pairs. These trading pairs are essential components of the cryptocurrency market, serving as the foundation for all trading activities. They allow traders to evaluate market trends and make informed decisions by comparing the relative value of the base currency against the quote currency. Understanding how crypto trading pairs work is vital not only for executing trades but also for effective portfolio diversification and navigating the complex market dynamics of the cryptocurrency market. With a wide range of different trading pairs available, traders are presented with diverse trading opportunities that reflect the unique characteristics and market conditions of various digital assets.

What Are Trading Pairs?

A trading pair consists of two different digital assets, such as BTC/ETH or ETH/BTC, enabling traders to exchange one cryptocurrency for another. In these pairs, the first currency listed is known as the base currency, which serves as the reference point for the trading pair. The second currency is called the quote currency, representing the currency used to price the base currency. For example, in the BTC/ETH pair, Bitcoin (BTC) is the base currency, and Ethereum (ETH) is the quote currency. Similarly, in the trading pair BTC/USD, Bitcoin is the base currency and USD is the quote currency. Trading pairs allow traders to compare costs between different cryptocurrencies by showing the exchange rate or comparative value of one crypto asset relative to another. This system also extends to fiat currency pairs, where digital assets are traded against traditional currencies like the US dollar, providing an essential link between the crypto market and the broader financial ecosystem.

How Crypto Trading Pairs Work

Crypto trading pairs work by facilitating the exchange of one digital asset for another on a trading platform. The price of the trading pair is determined by market sentiment and current market conditions, reflecting the supply and demand dynamics between the two cryptocurrencies involved. Trading pairs serve as unique value equations between two parts, allowing traders to speculate on price movements between different cryptocurrencies, offering opportunities for profit as well as risk of loss. Different crypto exchanges offer a variety of trading pairs, and the availability of specific pairs can significantly affect liquidity and trading opportunities. Some pairs, like BTC/ETH or stablecoin pairs, often provide better liquidity, making it easier for traders to enter and exit positions. Understanding how trading pairs work is essential for developing a successful trading strategy and implementing effective risk management techniques in the fast-paced crypto market.

Analyzing Trading Pairs

Analyzing trading pairs is a crucial step in cryptocurrency trading. It involves examining price charts, market movements, and trading volume to gain insights into market trends and make informed trading decisions. Technical analysis serves as an essential tool in this process, helping traders identify patterns, trends, and potential price movements within the crypto market. Additionally, incorporating risk management strategies is vital when analyzing trading pairs, as these strategies help mitigate potential losses and optimize gains. Understanding trading pairs is crucial for exploiting arbitrage opportunities, as traders can identify price discrepancies across different markets. By carefully studying trading pairs, traders can better understand market dynamics and improve their ability to make trading decisions that align with their goals and risk tolerance.

Understanding Market Trends

Market trends play a pivotal role in cryptocurrency trading, and trading pairs provide valuable information about market sentiment and price movements. Understanding these trends requires analyzing various market data, including price charts and trading volumes, to detect patterns that indicate whether the market is bullish, bearish, or ranging. Illiquidity in the market can create opportunities for arbitrage, as price discrepancies between trading pairs may arise. Trading pairs enable traders to identify these trends by comparing the performance of two cryptocurrencies relative to each other, offering insights into market movements and potential future developments. By staying informed about market trends, traders can tailor their trading strategies to current market conditions, increasing their chances of success and better managing the risks associated with volatile crypto markets.

Trading Strategies

A well-defined trading strategy is essential for navigating the complexities of cryptocurrency trading. Such a strategy outlines a plan for buying and selling digital assets, leveraging trading pairs to facilitate transactions and manage risk effectively. Trading strategies often incorporate technical analysis, market trend evaluation, and risk management principles to help traders meet their specific trading goals. Using stop-loss orders and maintaining favorable risk-reward ratios enhances trading strategies, providing a structured approach to managing trades. Since different trading pairs exhibit unique market behaviors and liquidity levels, traders must adapt their strategies to the characteristics of each pair and the prevailing market conditions. By developing and adhering to a robust trading strategy, traders can enhance their ability to capitalize on trading opportunities while minimizing potential losses in the highly dynamic crypto economy.

Managing Risks

Risk management is a fundamental aspect of successful cryptocurrency trading, and trading pairs provide various avenues for managing risk through diversification and hedging. By spreading investments across different crypto assets and trading pairs, traders can reduce their exposure to adverse market movements affecting a single digital asset. Risk management often requires a balanced approach, combining strategies such as setting stop-loss orders, controlling position sizes, and using stablecoin pairs for stability to help mitigate potential losses and protect capital. Effective risk management enables traders to preserve their portfolios and maintain a balanced approach to trading, aligning with their risk tolerance and long-term trading goals within the crypto market.

Conclusion

In conclusion, understanding cryptocurrency trading pairs is indispensable for success in the crypto market. Trading pairs offer a framework for buying and selling digital assets, providing insights into market trends, facilitating risk management, and enabling the development of effective trading strategies. The most widely traded digital asset that is integrated into the cryptocurrency market is BTC, which often serves as a base currency in many trading pairs. Each trading pair presents unique opportunities and challenges, requiring traders to cultivate a deep understanding of market dynamics and the specific characteristics of different digital assets. By analyzing trading pairs, staying informed about market sentiment and trends, and implementing sound trading and risk management strategies, traders can enhance their ability to make informed decisions and achieve their trading objectives. Ultimately, cryptocurrency trading pairs are essential tools that empower traders to navigate the evolving digital asset landscape with confidence and precision.

Crypto Basics

How Cryptos and Meme Coins Are Shaping the 2025 Crypto Market

Token Metrics Team
5 min

Introduction
With Bitcoin in price discovery and meme coins dominating short-term trends, crypto markets in 2025 are in a new phase of the cycle. At Token Metrics, we’ve been tracking smart money, emerging tokens, and high-conviction sectors like DeFi, AI, and meme assets. This post breaks down what we’re seeing—and how traders are adapting.

Current Market Sentiment

Bitcoin remains strong, with ETH and SOL following closely. Our models suggest:

  • ETH base case: $5,700


  • SOL base case: $630


  • Market cap projection: $8–14 trillion

Despite regulatory noise, crypto’s fundamentals—liquidity, user growth, and capital rotation—remain bullish.

Meme Coin Resurgence

Meme coins are leading short-term market action. Among the top gainers:

  • LoFi (SUI Ecosystem): Under $50M FTV, high liquidity, listed on Kraken and KuCoin
  • Sign, Gradient, Zerebro: Mixed quality; require caution

While volatility is high, top-performing meme coins on new chains often yield strong short-term returns—especially when backed by rising ecosystems like SUI.

Smart Money Tracking with Nansen

We’ve doubled down on using platforms like Nansen to follow profitable wallet cohorts. These tools help us identify early-stage tokens with smart money inflows. Key indicators:

  • Positive net inflow from smart wallets
  • Low concentration in top 100 holders
  • Distribution to non-suspicious fresh wallets
  • Whale cohort accumulation

We also track wallet activity over time to confirm whether top-performing wallets are accumulating or exiting positions.

Deep Dives Over Speculation

While meme coins grab headlines, we’re also analyzing sectors with long-term viability:

  • AI Agents (e.g., Fractal AI, Swarms)
  • Real-World Asset Stablecoins (e.g., USUAL with 9% APY)
  • Narrative Ecosystems (e.g., Hedera’s DEX activity surge)

We balance high-risk meme trades with deep fundamental research into projects gaining traction on-chain and in product development.

Sector Watch: Hedera Ecosystem

The Hedera (HBAR) ecosystem recently saw a 5x spike in DEX volume. Tokens like:

  • SaucerSwap (DEX)
  • HashPack (wallet)
  • Bonzo (lending)

are trending upward. While TVL remains low, increased volume may spark price momentum.

We’re not rotating capital aggressively here yet, but we’re watching closely for sustained on-chain activity.

Capital Flow Outlook

Altcoin rotation often follows BTC consolidation. With BTC and ETH leading the charge, we expect:

  • Meme coins and DeFi tokens to lead early-stage alt rotations
  • AI and DePin narratives to pick up mid-cycle
  • ETH and SOL outperformance in layer-1 competition

Internal price models and momentum indicators support further upside, assuming macro remains stable and regulatory conditions don’t sharply deteriorate.

Conclusion

The current cycle rewards those who combine quantitative analysis, on-chain tracking, and strong narrative awareness. Whether trading LoFi for a quick flip or accumulating tokens like Fractal AI or USUAL for a thesis-driven hold, the key is staying ahead of trends without abandoning discipline.

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